• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    1500607 Printing plates SUMITOMO CHEMICAL CO Ltd 23 May 1975 [6 June 1974] 22860/75 Heading G2C [Also in Division C3] Photosensitive plates suitable for the production of printing plates comprise a support bearing a layer of a photopolymerisable composition comprising (a) 80-40 parts by weight of an unsaturated polyester which contains an acid component -OC-CH==CH-C-, at least one glycol component # O# ## -(OCH2CH2)nwhere n is 2-4 and optionally a further acid component -OC-C6H4 -C- in a molar O #O # ## proportion not exceeding that of the first acid component, the polyester having an acid value of 15-30; (b) 20-60 parts by weight of a crosslinking monomer or monomers containing #-hydroxyethyl methacrylate as an essential component; (c) a photopolymerisation initiator; and (d) a heat polymerization inhibitor. Component (b) may include up to 50 wt. per cent of a diethylenically unsaturated monomer such as di-or tri-ethylene glycol dimethacrylate. In Examples the initiator is benzoin or benzoin methyl ether and the inhibitor is hydroquinone. The exposed plate is developed using an alkaline solution e.g. sodium hydroxide, and can then be used in a heat press operating at temperatures up to 200‹C.
    公开号:SU917712A3
    申请号:SU752143210
    申请日:1975-06-06
    公开日:1982-03-30
    发明作者:Сано Такезо；Иноуэ Таданори；Уемура Юкиказу
    申请人:Сумитомо Кемикал Компани Лимитед (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to printing, in particular to photopolymerizable compositions for the manufacture of original printing forms used in newspaper production and intended j for the manufacture of matrices from them.
    Known photopolymerizable composition for the manufacture of the original printing form, containing unsaturated polyester, a crosslinking monomer and innovator and polymerization inhibitor ΐ
    Original printing forms made from the known composition are intended for cold matrixing in newspaper production. 18
    For hot matrixing, the original printing plate must be heat resistant.
    The purpose of the invention is to increase the resistance to heat produced from the photopolymerizable composition of the original printed media.
    The goal .. is achieved by the fact that as the unsaturated polyester 28 ra use the product of the polymerization of unsaturated acids of the following formulas:
    a -.- o-e-s 6 n 4 -co O (in molar ratio O 6 (B):: (A) Ό.) 'and the glycol component of the formula (OCHqCHpfl (where η = 2,3 or 4) or their mixture, having an acid number of 15 to 30, and as a crosslinking monomer - hydroxyethyl methacrylate or its mixture with another monomer ^ selected from the soil !:: polyethylene glycol. dimethacrylate and triethylene glycol dimethacrylate in the following ratio, wt.
    Unsaturated Polyester 40–80
    Crosslinking Monomer * 20-60
    Photopolymerization initiator. 0,1-11
    Polymerization inhibitor 0.01-1.0 As the unsaturated polyester, the condensation product of the unsaturated dicarboxylic acid and the ortho-iso- or terephthalic acid and the glycol component from polyethylene glycol is also used, and maleic 5 or fumaric acid is used as the dicarboxylic acid.
    The glycol component is used from the group consisting of diethylene glycol, triethylene glycol and a mixture thereof, and a mixture of 50 wt.% Or more β-hydroxyethyl methacrylate and 50 wt.% Or Less polyethylene glycol dimethacrylate or triethylene glycol dimethacrylate is used as the crosslinking monomer.
    The photopolymerization initiator is selected 15 from the group consisting of benzoin, d, methylbenzoin, benzoin methyl ester, benzoin isopropyl ester, sodium anthraquinone-d. Sulfonate, 1-chlorantraquinone, 2-methylanthraquinone, thiophenol, 20 para-thiocresofenol and para-methiochenol and para-methiochenol and the polymerization inhibitor is selected from the group consisting of hydroquinone, methylhydroquinone, t-butylcatechol, pyragallol and 2,6-di-t-butyl para-cresol. 2 5
    The unsaturated polyester used in the proposed composition is obtained by condensation of an unsaturated dicarboxylic acid and ortho-, iso- or terephthalic acid and a glycol component 3 θ of a nant consisting of polyethylene glycol, for example diethylene glycol, triethylene glycol or tetraethylene glycol, in such an amount that is from 15 to 30. The acid number of the unsaturated polyester op- retselyaegsya 35 as the number of milligrams of potassium edko- · required for neutralization of the carboxyl groups contained in one gram cm oly. According to the study, if the acid number of the composition is too high, then the original printed form has poor mechanical strength when pressed and is easily destroyed and, on the other hand, if the acid number is too low, the composition is prone to gelation, has a high viscosity, is difficult to handle and requires a long time for the manufacture of the original printing form.
    When the content of phthalic groups (component B) is too high, the stiffness of the unsaturated polyester increases, and the curing rate decreases due to a decrease in the crosslinking points. In addition, smoda is characterized by the worst resistance when pressed in high temperature conditions.
    Unsaturated dicarboxylic acid includes maleic and fumaric anhydrides. The content of unsaturated groups (component A) is closely related to the hardening rate and heat resistance and should be equal to or two or more times the content of phthalic groups (component B)), i.e., the molar ratio of component A to component B is O i (B): (A) 1 (preferably O (B): (A) ^ 0.5). When the content of unsaturated groups is greater, the photosensitivity and crosslinking density increase, as a result of which the heat resistance of the resin at high temperature increases. If even the unsaturated polyester does not have phthalic groups (component B), it still has sufficient heat resistance and pressure resistance, and when a crosslinking monomer is added in an amount corresponding to the molar number of unsaturated groups, the resulting composition has an extremely low viscosity and is easily is being processed.
    When the glycol component esterified with the acid components has a short glycol chain, the original printed form obtained from the composition is fragile. When, for example, ethylene glycol is used, the resulting photopolymerizable resin is not suitable for the manufacture of the original printing form. On the other hand, if the glycol component has a long chain, the resulting photopolymerizable resin has a strongly lyophilic character and its manifestation is easier, but when the number ή is 5 or more, the manifestation is poor; those. the hardening part of the resin swells a lot, the printing area is unclear and the heat resistance and pressure resistance of the resin are less. When a mixture of glycols having different numbers η (for example, and = 2,3 and 4) is used as the glycol component, the physical properties of the photopolymerizable resin can be modified.
    The cross-linking monomer used in the proposed composition contains as its main component (л - hydroxyethyl methacrylate, which reacts with unsaturated groups of the polyester chain when irradiated with light to form a cross-linked structure, and as a result, the exposed sites are made insoluble in the solvent. When
    -hydroxyethyl methacrylate is added to the composition in large quantities,
    917712 6 elasticity of a photopolymerizable example, benzoin, d. β-methylbenzoin of the resin becomes high at room temperature, the reactivity of the resin increases, and the viscosity of the composition decreases, but on the other hand, the ratio of 5 homopolymerizes of other [β-hydroxyethylmethacrylate not involved in the crosslinking reaction increases and as a result, non-crosslinked sites undergo fluidization at high temperature. 10 When the amount of β-hydroxyethyl methacrylate is more than 60 weight. hours, heat resistance and pressure resistance of the photopolymerizable resin is reduced.
    On the other hand, when the amount of this, 5th substance is less than 20 weight. h ,, the cured resin has an extremely low modulus of elasticity at room temperature and is practically not applicable. Therefore, in the case of using only β-hydroxyethyl methacrylate, the added amount is 20-60 or more (preferably 25-40) weight. h. In such a composition, even if the same unsaturated polyether 23 is used , a simple change in the amount of (b-hydroxyethyl methacrylate from 20 to 50 parts by weight can give compositions with various properties, from rubber-like soft to hard. . 30 IU, addition -gidroksietilmetakrilata may impart other characteristics, such as ease of washing water-containing developer, since it is a water-soluble monomer. 3J crosslinking monomer is characterized by extremely low toxicity and low odor when compared with the usual crosslinking monomers for the unsaturated polyester, for example styrene. 40 It may contain 50 wt.% or more | L-hydroxyethyl methacrylate as the main component and other monomers, for example 50% or less of dimethylene glycol dimethacrylate or triethylene glycol dimethacrylate. | L-hydroxyethyl methacrylate as a crosslinking agent, the photopolymerizable composition is characterized by heat resistance, resistance to pressure in the matrix press, flexibility, manifestation, low toxicity and labym odor.
    In addition to the unsaturated polyester and the crosslinking Chlonomer, the photopolymerizable composition contains a photopolymerization initiator, which is used as conventional initiators, such as i-carbonyl alcohols (Naili ώ -phenylbenzoin), cL-carbonyl ethers (for example, benzoinmethyl ether or benzoinisopropane) for example, sodium anthraquinone — i — sulfonate, 1-chlorantraquinone, 2-methylanthraquinone or 1,4-naphthoquinone), thiols (for example, thiophenol, para-thiocresol, para-methoxythiophenol). The initiator of photopolymerization is added in an amount of 0.1 to 11 weight. h
    In addition, the proposed composition contains a thermal polymerization inhibitor, which is selected from the group consisting of hydroxyquinone, methylhydroquinone, t-butylcatechol, pyragallol, 2,6-. -di-1-butyl-para-cresol ’, and so on, in the amount of 0.01-1.0 parts by weight
    The original printing form can be made of the proposed photopolymerizable composition as follows.
    The above components are mixed to obtain a photopolymerizable composition, which is applied to the substrate to the desired thickness, respectively, with the depth of the relief, and then irradiated with light, for example an ultraviolet lamp or a high-pressure mercury lamp, through a film with the original pattern, as a result of which the exposed areas harden. Then, the form is washed off with a weak alkaline solution to remove uncured areas and dried.
    The original printing form, obtained from the proposed photopolymerizable composition, is flexible at room temperature, has a sufficiently crosslinked structure and the cured spots are not fluidized even at high temperatures (up to 200 ° C), therefore, it can be pressed. heat-resistant thermoplastic resin, for example, molten carbonate. In addition, the photopolymerizable composition has a high resistance to thermal shock, since its elasticity varies little with temperature. The stress arising due to the difference in thermal expansions of the resin layer and the substrate, when the matrix is removed from the original printing plate, is absorbed by the form, since the resin has great flexibility and therefore the original form is not damaged and can be reused for hot pressing.
    917712 8
    The proposed photopolymerizable composition can be used for the manufacture of original printing plates suitable for stereotyping, in newspaper production in the high-temperature “ 5th tour press and other prints, as well as for various drawings and drawings or for precise stamping.
    Example 1 392.2 g of maleic acid anhydride, 332.2 g of isophthalic acid, 946.3 g of triethylene glycol and 450 mg of hydroquinone monomethyl ether were charged into a 2 L flask. The mixture reacts with. 200 ° C or higher for 8 hours under nitrogen. Obtain 1527 g of an unsaturated polyester having an acid number of 22.0 (determined according to method 315 9601).
    To 210 g of unsaturated polyester, 90 g of ft-hydroxyethylmethacrylate 20 , 3 g of benzoin methyl ester and 0.3 g of hydroquinone are added. The mixture is stirred, defended and a photopolymerizable composition having a viscosity of 7000 cP (25 ° C.) is obtained. 25
    The resulting composition is applied with a thickness of 0.6 mm to a steel plate (thickness 0.3 mm, dimensions 200x100 mm) with a protective layer and a negative foam is applied on it, tightly held 30 between polyethepenterephthalate foam and a transparent glass plate (thickness 2 mm). Irradiation is carried out with ultraviolet fluorescent lamps (20 W, 15 lamps) from a distance of 5 cm 3J for 5 minutes. After exposure, wash with 0.1% aqueous sodium hydroxide solution and dry. A polycarbonate sheet ( 4Q size 200x100 mm) is applied to the book text thus obtained and subjected to hot pressing at 200 ° C. Get a good matrix of polycarbonate without any damage to the original printing form.
    Example 2.147.1 g of maleic anhydride, 236.6 g of triethylene glycol and 150 g of hydroquinone monomethyl ether are reacted analogously to Example 1. An unsaturated polyester having an acid number of 16.5 is obtained.
    165 g of an unsaturated polyester were mixed with 135 g ft-hydroxyethyl methacrylate, 3 g of benzoin, and 0.3 g of hydroquinone and prepared fotopodimerizuyushuyusya composition having viscous bone 35 1500 cps. (25 ° C)
    Analogously to example 1, from the composition obtained, an original printing form is prepared and used for hot pressing a good polycarbonate matrix without any damage to the original printing form.
    Example 3. The process is carried out analogously to example 1, but instead of 90 g of ft-hydroxyethyl methacrylate, a mixture of 45 g of ft-hydroxyethyl methacrylate and 45 g of triethylene glycol dimethacrylate is used. By hot pressing, a good polycarbo matrix is obtained without any damage to the original printing form.
    PRI me R 4 (comparative).
    The process is carried out analogously to example 1 ,. but heptaethylene glycol is used as the glycol component. Get a very soft and fragile composition. ' The original printing plate made from this composition is destroyed by hot pressing.
    PRI me R 5 (comparative).
    Using the unsaturated polyester analogous to Example 1, except that the amount of & -hydroxyethylmethyl- “crylate is 70 weight. o'clock, prepare the original printing form, on which during hot pressing unclear areas appear.
    权利要求:
    Claims (7)
    [1]
    unsaturated dicarboxylic acid and ortho-iso- or terephthalic acid and the glycol component from polyethylene glycol, and using maleic anhydride or fumaric acid as the dicarboxylic acid. The glycol component is used) from the group consisting of d-ethylene glycol, triethylene glycol and mixtures thereof, and a 5% by weight mixture is used as a crosslinking monomer and pi is more P-hydroxy-ethyl methacrylate and 50% by weight or Less polyethylene glycol dimethacrylate or triethylene glycol di-methacrylate. The photopolymerization initiator is selected from the group consisting of benzoin, eC-m tilbenzoin, benzoin methyl ester, benzoin isopropyl ester, sodium anthraquinone d-sulfonate, 1.-chloroanthraquinone, 2-methanthraquinone, thiophenol, para-thiocresol, and para-thiocresol and para-thiocraxolone, 1.-chloroanthraquinone, 2-methanthraquinone, thiophenol, para-thiocresol, and para-thiocresol, and 1-chloroanthraquinone, 2-methanthraquinone, thiophenol, para-thiocresol, and para-thiochenol, and 2-methanthraquinone; the polymerization inhibitor is selected from a group consisting of hydroquinone, methylhydroquinone, t-butylcatechol, pyrahalol, and 2,6-di-t-butyl-para-cresol. The unsaturated polyester used in the proposed composition is obtained by condensation of an unsaturated dicarboxylic acid with ortho, iso or terephthalic acid and a glycol component consisting of polyethylene glyxn, for example diethylene glycol, triethiene glycol or tetraethylene glycol, in an amount such that the acid number is The product ranges from 15 to 30. The acid number of the unsaturated polyester is defined as the number of milligrams of pure potassium required to neutralize the carboxyl groups contained in one gram of resin. According to the study of Mu, if the acid number of the composition is too high, then the original printed form made has poor mechanical strength when pressed and is easily destroyed and, on the other hand, if the acid number is too low, the composition is prone to gelatinization, has high viscosity, is inconvenient to handle and requires long time to make an original printing plate. When the content of phthal groups (component B) is too large, the rigidity of the unsaturated polyester increases, and the rate of hardening decreases with a view to reducing the crosslinking points. In addition, cMo / ia is characterized by poorer pressing resistance under high temperature conditions. Unsaturated dicarboxylic acid includes maleic and fumaric anhydrides. The content of unsaturated groups (component A) is closely related to the rate of hardening and heat resistance and should be equal to or two or more times the content of phthalic groups (component B)), i.e. the molar ratio of component A to component B is O (B); (A) 1 (preferred (B): (A) 0.5). When the content of unsaturated groups is greater, the photosensitivity and density of cross-linking increase, as a result of which the heat resistance of the resin at high temperature increases. If even unsaturated polyether does not have phthalic groups (component B), it still has sufficient heat resistance and pressure resistance, and adding a crosslinking monomer in an amount corresponding to the molar number of unsaturated groups, the resulting khalposidei has an extremely low viscosity and easy to recycle. When the glycol colder, esterified with acidic components, has a short glycol chain, the original printed form obtained from the composition is fragile. When, for example, ethylene glycol is used, the photopolymerizable resin obtained is not suitable for the manufacture of an original printed form. On the other hand, if the glycolic xjonent has a long chain, the resulting photopolymerizable resin has a highly lyophilic character and its appearance is easier, but when n is 5 or more, the appearance is poor; those. the hardening part of the resin swells strongly, the printing area is made clear and the heat resistance and pressure resistance of the resin are less. When a mixture of glycols having different numbers and is used as the glycol component (for example, nos. 2, 3 and 4), the physical properties of the photopolymerizable resin can be modified. The crosslinking monomer used in the inventive composition contains as its main component (i-hydroxyethyl methacrylate, which reacts with unsaturated polyether chain groups when irradiated with light to form a cross-linked structure, and as a result, exposed sites are made insoluble in the solvent. When-hydroxy ethyl methacrylate is added to the composition in large quantities, the epasticity of the photopolymerizable resin is high at room temperature, the reactivity of the resin increases, and the viscosity of the composition is but, on the other hand, the ratio of homopolymerized (b-hydroxyethyl methacrylate, not included in the crosslinking reaction increases and as a result unstitched places are subjected to fluidization at high temperature. When the amount of C-hydroxyethyl methacrylate is more than 60 weight parts, heat resistance and photopolymerization resistance is the same. resin decreases. On the other hand, when the amount of this substance is less than 20 parts by weight, the cured resin has an extremely low modulus of elasticity at room temperature and is hardly used ima. Psi. to this, in the case of using one (4-hydroxyethyl methacrylate, the added amount is 2 O - 60 and more (preferably 25 - 4 O) weight. In such a composition, even if the same unsaturated polyester is used, a simple change in the amount of 5) - hydroxyethyl methacrylate from 20 to 50 weight. h. can give compositions with different properties, starting from rubber-like soft 0.0 hard. KROP. Moreover, the addition of | L-hydroxyethyl. methacrylate may impart other characteristics, such as ease of washing with an aqueous developer, as it is a water-soluble monomer. The crosslinking monomer is extremely low in toxicity and low odor compared to conventional crosslinking monomers for non-toxic polyether polyester, for example styrene. It may contain 5O weight. % or more of L-hydroxyethyl methacrylate as the main component and other monomers, for example 50% or less of avt methylene glycol dimethacrylate or triethylene glycol dimethacrylate. Thus, adding (b-hydroxyethyl methacrylate as a crosslinking agent to a photopolitelizing agent with the composition is characterized by heat resistance, with its motivation to pressure in the matrix press, flexibility, demonstrability, low toxicity and low odor. In addition to unsaturated polyester and cross-linking activity. with the composition, contains a photopolymerization initiator, in which conventional ispl-curtains are used, such as i -carbonyl alcohols (for 9 26 example, benzoin, d. -methylbenzoin or d-phenylbenzoin), cL -carbosh ethers (for example, benzoinmethyl ether or benzoinisopropyl ether), anthraquinones (for example, sodium anthraquinone- (i-sulfonate, 1-chloro-nthraquinone, 2-methylanthraquinone or 1,4-naphthoquinone), thiols (for example, thiophenol, para-thiocresol, para- methoxythiophenol.) The photopolymerisation ishshiator is added in an amount of 0-1 to 11 wt. h. In addition, the 1 std composition contains a thermal polymerization inhibitor that is selected from the group consisting of hydroquinone, methylhydroquinone, t-butylcatechol, pygallol, 2,6- . -tsi-1 -butyl-para-creaol and al.al., in an amount of 0.01-1.O, o weight.h. An original printed form can be made in the proposed photopolymerizable composition as follows. The above components are mixed to form a photopolymerizable composition that is applied to the substrate at a desired thickness, respectively, with a relief depth, and then irradiated with light, such as ultraviolet, a high-pressure mercury lamp, and a film with the original design, resulting in hardened areas. The mold is then washed off with a weak alkaline solution to remove uncured areas and dried. The original printed form, obtained by the short-circuiting of the proposed photopolymerizable composition, is flexible at room temperature, has a sufficiently cross-linked structure and its solidified places do not fluidize even at high temperature (up to), therefore it can be pressed. heat resistant thermoplastic resin, for example, molten carbonate. In addition, the photopolymerizable composition has a greater resistance to thermal shock, since its elasticity varies little with temperature. On the other hand, arising from the difference in thermal expansions of the salol layer and the substrate, when the matrix is removed from the original printing form, it is absorbed by the form, since the resin is very flexible and therefore the original is not damaged and can be reused for hot pressing. The proposed photopolymerization composition can be used to make original printing plates, which can be used to create stereotypes in a newspaper production in a high-temperature press and other printing, as well as for various drawings and drawings or for precise embossing. Example. In a 2 liter flask, 392.2 g of maleic anhydride, 332.2 g of n-phthalic acid, 946.3 g of triethylene glycol, and 450 mg of monomethyl alcohol-hydroquinone ester are loaded. The mixture is refilled at. 2 ° C or higher for 8 hours under nitrogen. 1527 g of unsaturated polyester are obtained, having a kiolotny number of 22.0 (determined by the method 315 96 O1). 90 g of ft-hydroxyethyl methacrylate, 3 g of benzoin methyl ester and O, 3 g of hydroquinone are added to 210 g of unsaturated polyester. The mixture is stirred, settled, and a photopolymerizable composite is obtained, having a viscosity of 70OO cP (25 ° C). The resulting composition is applied with a thickness of 0.6 mm on a steel plate (thickness 0.3 mm, dimensions 200x100 mm with a protective layer and a negative film is applied to it tightly held between the polyethylene pentaphthalate foam and a transparent glass plate (thickness 2 mm). Irradiation t ultra violet fluorescent lamps (20 W, 15 lamps) from a distance of 5 cm for 5 min. After exposure, wash 0 with an aqueous solution of sodium hydroxide and drying. A polycarbonate sheet (size 20X10 mm) and hot pressed at 200 ° C. A good polycarbonate matrix is obtained without any damage to the original printing form Example 2.147.1 g of mapeic anhydride, 236.6 g of triethylene glycol and 150 g of hydroquinone monomethyl ether are reacted in a manner similar to Example 1. An unsaturated polyester is obtained. having an acid number of 16.5. 165 g of the obtained non-saturated polyether is mixed with 135 g of |% -hydroxyethyl methacrylate, 3 g of benzoin and 0.3 g of hydroquinone and a photo-photo / brizable composition is obtained, having a viscosity of 1500 cP (25 ° C) Similarly applied An original printed form is prepared from the resulting composition and used for hot pressing a good polycarbonate matrix without any damage to the original printed form. EXAMPLE 3 The process is carried out in analogy to Example 1, but instead of 9O g of hydroxyethylmethacrylate, a mixture of 45 g of 15 -hydroxyethyl methacrylate and 45 g of triethylene glycol dimethacrylate is used. With hot pressing, a good polycarbonate matrix is obtained without any damage to the original printing form. PRI me R 4 (comparative). The process is carried out analogously to Example 1, but heptaethylene glycol is used as the glycol component. A very soft and fragile composition is obtained. The original printing plate made from this composition breaks down during hot pressing. PRI me R 5 (comparative). Use unsaturated polyester in a manner similar to Example 1, except that the amount of & -hydroxyethylmeta-g. krilata is 7 o weight. hours, an original printing plate is prepared, on which, when hot pressed, there appear unclear sections. Claim 1. A photopolymerizable composition for making an original printing form containing unsaturated popie4, a crosslinking monomer, a photopolymerization initiator and a polymerization inhibitor, characterized in that, in order to increase durability, I made the original printed composition to heat as an unsaturated polyester using the product of polymerization of unsaturated acids of the following formulas: A: - O - C - CH CH - C in: - o - C - C, Nd - C II OO (in a molar ratio O (B): (A) 1) and glycol component of the formula (OCHi jCHij) g, (where P 2,3 or 4) or their mixture, having an acid number of from 15 to 30, and as a crosslinking monomer - (L-hyroxyethyl methacrylate or its mixture with another monomer selected from the group of polyethylene glycol dimethyl 1-phylate and triethylene glycol methacrylate, in the following ratio of components, parts: unsaturated polyether4O-8O Crosslinking monomer 26-60 Photopolymerisation initiator 0, 1-11 Polymerization inhibitor O, O1-1, O
    [2]
    2. The composition according to claim 1, wherein the unsaturated polyester uses the condensation product of unsaturated dicarboxylic acid and ortho-y-iso- or terephthalic acid i. glycol component of polyethylene glycol.
    [3]
    3.Ks shozy on PP. 1 and 2, that is, that maleic anhydride or fumaric acid is used as the dicarboxylic acid.
    [4]
    4. Composition on PP. 1-3, in that the glycol component is used from the group consisting of diethylene glycol, triethylene glycol and mixtures thereof.
    [5]
    5. A composition according to claim 1, characterized in that a mixture of 50 weight% is used as a crosslinking monomer. % or more (i-hydroxyethyl methacrylate and 5O wt.% or less polyethylene glycol dimethacrylate or triethylene glycol dimethacrylate.
    [6]
    6. The composition of claim 1, wherein the initiator of the photopolymerization is selected from the group consisting of bezoin, d-methyl benzoic, benzoin methyl ester, benzoin isopropyl ester, sodium antrachino-d-sulfonate, 1-Chlorantraquinone, 2-Mfethyl-anthraquinone, thiophenol, para-thiocresol and para-methoxythiophenol.
    [7]
    7. The composition of claim 1, wherein the polymerization inhibitor is selected from pears consisting of hydroquinone, methylhydroquinone, t-schutate, paragloplop and 2,6-li-fc-butip -cresopas
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    同族专利:
    公开号 | 公开日
    JPS50155303A|1975-12-15|
    CA1059683A|1979-07-31|
    JPS5242084B2|1977-10-22|
    FR2273827A1|1976-01-02|
    DE2525297A1|1975-12-18|
    IT1036182B|1979-10-30|
    NL7506773A|1975-12-09|
    GB1500607A|1978-02-08|
    FR2273827B1|1979-01-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS5444037B2|1974-12-27|1979-12-24|
    CA1069638A|1976-05-14|1980-01-08|Earl E. Parker|Low smoke density fire-retardant unsaturated aliphatic polyester resins containing alumina hydrate|
    JPS58182631A|1982-04-20|1983-10-25|Nippon Synthetic Chem Ind Co Ltd:The|Image forming composition|
    CA2244324A1|1997-08-04|1999-02-04|Hsm Holographic Systems Munchen Gmbh|A method and an apparatus for fabricating a surface structure, particularly a holographic surface structure, on a substrate|
    US6099123A|1997-09-04|2000-08-08|Signet Armorlite, Inc.|Production of photopolymerized polyester high index ophthalmic lenses|
    AU2017251638A1|2016-04-14|2018-10-04|Desktop Metal, Inc.|Additive fabrication with support structures|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP6469874A|JPS5242084B2|1974-06-06|1974-06-06|
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