• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to self-extinguishing compositions based on olefin polymers or copolymers, such as polypropylene, polyethylene, ethylene-propylene copolymers, EPDM rubbers and other polymers, such as polystyrene, ABS resins, polyethylene terephthalate, polybutylene terephthalate, polycarbonates, and polyamides. More particularly, the present invention relates to self-extinguishing polymeric compositions comprising, for 100 parts of a polymer as such or containing inert fillers and/or other additives: (1) 5 to 30 parts of an ammonium phosphate; and (2) 3 to 20 parts of one or more nitrogen containing compounds selected from a group consisting of (a) those containing the groups >C=O and/or >C=S and >NH inserted in a cyclic structure; (b) those containing the group -CO-NH-(CH2)n- in which n is an integer having a value of at least 1, and (c) the reaction products of compounds (a) and/or (b) with aldehydes.
    公开号:SU795496A3
    申请号:SU772485655
    申请日:1977-05-27
    公开日:1981-01-07
    发明作者:Бертелли Гвидо；Рома Пьерпаоло；Локателли Ренато
    申请人:Монтэдисон С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    54) POLYMER COMPOSITION
    one
    The invention relates to self-extinguishing compositions based on polymers or copolymers of olefins.
    Various polymeric compositions are known that include, in particular, antimony, in combination with non-heat-resistant halogen-substituted compounds, such as chloroparaffin 1, to increase the fire resistance of metals.
    The combination of a halogen-substituted compound with a metal gives satisfactory results with regard to the acquisition of self-extinguishing characteristics by polymers, but this results in corrosion during processing of materials and a significant increase in toxic fumes and gases in the event of a fire. In addition, a satisfactory degree of self-extinguishing is achieved only with a high concentration of such additives.
    Closest to the invention to the technical essence and the achieved result is a polymer composition comprising a monopolymer or copolymer of propylene and a flame retardant additive consisting of ammonium polyphosphate of the formula (), where n is from 50 to 100, and melamine dipentaerythran. An inorganic filler, such as titanium dioxide or kaolin, is also added to the composition. Such a composition is not sufficiently flame retardant; it includes at least three components.
    The purpose of the invention is to increase the fire resistance of the composition.
    The goal is achieved by the fact that a polymeric composition comprising ammonium polyphosphate () | ,, where n is from 50 to 100, and nitrogen-containing
    the compound contains as the latter a compound selected from the group comprising ethylene thiourea, hexahydrin. irimidin-2-one, hydantoin, polyamide and the product of the interaction
    ethylene urea, ethylene thiourea
    or hexahydropyrimidin-2-one with formaldehyde at their molar ratio. respectively, 1: 2, and the polymer is selected from the group., vk.gpocheyaschey polyethylene, polypropylene, polystyrene,
    acrylonitrile-butadiene-styrene copolymer, polyamide and civiecb of polypropylene and ethylene-propylene rubber, taken in the ratio 3: 5, in the following ratio of components, wt.%:
    Ammonium polyphosphate. 15-20 Nitrogen Containing
    compound, 3-15
    Polymer Rest The composition of polyphosphates has the above formula, in which n is large enough to provide a low level of solubility in water and practically the only composition that corresponds to the formula of metaphosphate (.).
    An example of such polyphosphates is the polyphosphates of the trademark Albaplas AP 95 (manufactured and sold by Benkizer Knapsack GmbH). Another example of the polyphosphate is the product of the FOS-CHECK P / 30 trademark (Monsanto Chemical Company) with a similar composition. Nitrogen-containing compounds are preferably used as a reaction product with formaldehyde. Such products have the advantage that they have no unpleasant odor, are soluble and more compatible with polymers added to them. Their preparation is provided by known methods. For example, to obtain the product of the reaction of ethylene thiourea with formaldehyde, ethylene thiourea is dissolved in water in an amount of 50. g / l, treated with acid to a pH of 2 by adding dilute acid (for example sulfuric or phosphoric acid), heated to 37 The% formaldehyde aqueous solution is added dropwise to the ethylene thiourea solution at. vigorous stirring until the formaldehyde: ethylene thiourea molar ratio reaches 2: 1. The precipitate in the form of a very fine powder is filtered, washed with water and dried.
    The composition according to the invention can be obtained by conventional methods. For example, polymers and flame retardants are mixed in a Banbury-type paddle mixer at the temperature, plasticization of the polymer. The mixture obtained is worked up in an extruder at a temperature that is most suitable for the production of a granular product, and the temperature varies depending on the function of the polymer.
    In order to determine the self-extinguishing properties of the compositions, I proceed as follows. The granulated product is rolled into a 3 mm thick plate using a small press such as Carver, which performs the operation for. 7 min under pressure
    40 kg / cm and at an appropriate temperature, which may vary depending on the type of polymer.
    The amount of self-extinguishing is determined on the plates thus obtained or by measuring (in accordance with ASTM D-2863) the oxygen index — which shows the minimum percentage of oxygen mixed with nitrogen required for the sample to burn permanently, or by applying UL-standards 94. UU-94 standards are designed for different experimental conditions and allow the sample to be classified at different levels of self-extinguishing.
    P and mery Vertical burning tests are conducted which classify material at lower levels 94V-0, 94V-1 and 94V-2.
    The sample, clamped by a suitable device in a vertical position, is set on fire from below, and two attempts of arson (from the two sides of the sample) are carried out, each lasting 10 s. The three indicated levels of self-extinguishing can be characterized as follows:
    94V-0 - for more than 10 s after each delivery, the fire does not hit. - ignition of the sample or the fall of burning particles. Besides etrgo, the total ignition time does not exceed 50 s for 10 attempts on 5 samples.
    94V-1 - ignition time is allowed for up to 30 seconds for a single sample and up to 250 seconds for 10 attempts on 5 samples. Even at this level, no burning particles are observed separating from the sample.
    94V -2 - the ignition time is the same as at the level of 94V-1, but the precipitation of burning particles is allowed.
    In tab. Tables 1 and 2 show the results obtained with polypropylene (Table 1), polyethylene, polystyrene, acrylonitrile-butadiene-styrene copolymer (resin resin), polyamide and a mixture of polypropylene and rubber (EPDM) from ethylene-propylene rubber (Table 2),
    . Homo- and copolymers of propylene, restraining, in addition to ammonium polyphosphate, dipitaerythritol and melamine (according to the prior art), have less fire resistance: the oxygen index values are in the range of 18-26 and become even lower if there is no inorganic substrate.
    Compositions based on polypropylene Polypropylene 75 75, 75 80 70 70 75 80 Albaplas. AR 95 (ammonium polyphosphate) 17 17 17 17 15 15 17 15 Hexahydropyrimidine-9 -PY (iV JnQ "to Hydanthoin-8-Hexahydropyrimidin-2-one with formalde 8 3 - guide Nylon b - - 15 Ground Ethylene Thiourea with Formaldehyde Ethylene Thiourea
    Ethylene thiourea with formaldehyde Oxygen index 28 27 32.5 29.5-27 U1--94 (thickness 1/8 inch) - Composition based on polyamide or mixture
    Component and indicator
    Polyethylene Polystyrene
    Table
    8 10
    Formulation, parts by weight
    16 1 17 18 1 19 20 J 21 I 22 1 23
    75
    75
    65 polyethylene, polystyrene, resin ABS, polypropylene with rubber ERDM, 5 70 75 73 73 75 70 5 18 17 17 20 17 15 -..-, ... 0 12 27 32 28.5 28 31 32.5 33.5 30.5.33.5 35 - V-0 VrO V-0 Ch-O V-0 V-0 V-0 V-0 V-0 Table 2 Resin ABS Polyamide from caprolactam Polypropylene blend with EPDM rubber Albaplas AR 95 (polyphosphate ammonium) Ethylene thiourea Hexahydropyrimidin-2-one with ethylene formaldehyde formaldehyde. with formaldehyde Oxygen index lit-94 (sample thickness 1/8 inch 0 V-0 ma)
    权利要求:
    Claims (2)
    [1]
    1. Production and use of flame-retardant polymers in the USSR and abroad, M., NIITEKHIM, 1971, issue 6, p.13,
    [2]
    2. US patent number 3810862,
    cl. 260-42.45, published 1974 (prototype). -75 20 15 17 17 17 17 15 - - - 888 8 8.5 27.5 27.5 26.5 28.5 32 -0 N-0 V-0 V-0 V-0 V-0
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    同族专利:
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    US4193945A|1980-03-18|
    BE855122A|1977-11-28|
    FR2352857A1|1977-12-23|
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    ES459539A1|1978-04-16|
    MX143746A|1981-07-07|
    NL184961C|1989-12-18|
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    DK153161C|1988-10-31|
    NL7705693A|1977-11-30|
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    AU509255B2|1980-05-01|
    JPS6035947B2|1985-08-17|
    DE2723877A1|1977-12-15|
    NO147990B|1983-04-11|
    ZA773189B|1978-04-26|
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    IT1314768B1|1996-12-19|2003-01-16|Montell North America Inc|PROCESS FOR THE PRODUCTION OF FLAME RESISTANT ADDITIVES FOR POLYMER COMPOSITIONS, AND PRODUCTS OBTAINED FROM THE PROCESS|
    US6444736B1|1998-04-24|2002-09-03|Chisso Corporation|Flame retardant polyolefin composition|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT23748/76A|IT1060705B|1976-05-28|1976-05-28|SELF-EXTINGUISHING POLYMERIC COMPOSITIONS|
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