Composition cementing moulded articles of unplasticized pvc

专利摘要:
The invention relates to the preparation of compositions for the bonding of vinyl chloride polymers, in particular for the gluing of molded articles from unplasticized polyvinyl chloride. The invention makes it possible to increase the durability of adhesive joints working under pressure due to the additional content of polyvinyl chloride with Fikentscher constant 50 and methyl ethyl ketone. The composition contains, in wt%: polyvinyl chloride with a Fikentscher constant 58 10 - 16, polyvinyl chloride with a Fikentscher constant 50 4 - 10, tetrahydrofuran 20 - 35, methyl ethyl ketone 25 - 35, cyclohexanone 15 - 20, dimethylformamide 5. Table 1.
公开号:SU1545945A3
申请号:SU884356224
申请日:1988-08-05
公开日:1990-02-23
发明作者:Дирдорф Ганс-Рольф；Вегнер Юрген
申请人:Хенкель Кг Аа (Фирма)；
IPC主号:

专利说明:

The invention relates to a composition for the bonding of vinyl chloride polymers, in particular to a composition for the gluing of molded articles of unplasticized polyvinyl chloride.
The aim of the invention is to increase the durability of adhesive joints, working iodine pressure.
The composition is obtained by dissolving the indicated grades of polyvinyl chloride in a mixture of these organic substances.
Example 1.10 wt.% Powdered polyininyl chloride with a K a value of 58 and 10 wt.% Powdered polyvinyl chloride with a K value of 50 p are stored in a mixture consisting of wt.%: Methyl ethyl ketone 35; tetrahydrofuran 20; cyclohexanone 20; dimethylformamide 5. The resulting composition is suitable for gluing molded articles from non-laminated polyvinyl chloride, such as pressure pipes.
Example 2. Example 1 is repeated, with the difference that the components are taken in a quantitative ratio,% by weight:
Polyvinyl chloride with a value of K 5816
Io livinyl chloride with a value
Tetrahydrofuran20
Cyclohexanone 20
cl
. ate
CO 4 SP

cm
Methyl etnketok35
Dimethylformamide 5
The resulting composition is suitable for gluing molded articles of unplasticized polyvinyl chloride, for example pressure pipes.
Example 3. Example I is repeated, with the difference that the components are taken in a quantitative ratio,% by weight:
Polyvinyl chloride with a value of K 5810
Polyvinyl chloride with a value of K 5010
Tetrahydrofuran35
Cyclohexanone15
Methyl ethyl ketone25
Dimethylformamide 5
The resulting composition is suitable for gluing molded articles of unplasticized vinyl chloride, such as pressure pipes.
Example 4. Example 1 is repeated with the difference that the components are taken in a quantitative ratio, wt.%:
Polyvinyl chloride with a value of K 5813
Polyvinyl chloride with a value
Tetrahydrofuran28
Cyclohexanone17
Methyl ethyl ketone 30 Dimethylformamide 5
The resulting composition is suitable for gluing molded articles of unplasticized polyvinyl chloride, for example pressure pipes.
Example 5 (control). The composition has the same composition as the composition of Example 1, with the only difference that, as the polyvinyl chloride component, it contains only Polyvinyl chloride with a value taken in an amount of 20% by weight.
Example 6 (control). The composition has the same composition as the composition of Example I, with the only difference that it does not contain methyl ethyl ketone, moreover, tetrahydrofuran is taken in an amount of 20 wt.%, Cyclohexanone in an amount of 20 wt.%, And Dimethylformamide in the amount of 40 mds.%.
Example 7 (contro) The composition has the same coagulum as the composition of example 2, with the only difference that, as iol rot
of the chloride component, it contains only polyvinyl chloride with a value taken in the amount of 20 mag.%.
Example 8 (control). The composition has the same composition as the composition of Example 2, with the only difference that it does not contain methyl ethyl ketone, and tetrahydrofuran is taken in an amount of 20 wt.%,
cyclohexanone - in the amount of 20 wt.%, and Dimethylformamide - in the amount of 40 wt.%.
Example 9 (control). c The composition has the same composition as the composition of example 3, with the only difference that it contains only Polyvinyl chloride as a poly-nichloride component with a value taken in an amount of 20 wt.%.
Example 10 (control). The composition has the same composition as the composition of example 3, with that 5 only the difference that it does not contain
Methyl ethyl ketone, with Tetrahydrofuran taken in an amount of 20% by weight, cyclohexanone in an amount of 20% by weight, and Dimethylformamide in an amount of 40% by weight.
Example 11 (control). The composition has the same composition as the composition of Example 4, with the only difference that it contains only Polyvinyl Chloride as a polyvinyl chloride component, taken in an amount of 20% by weight.
Example 12 (control). The composition has the same composition as the composition of example 4, with the only difference that it does not contain methyl ethyl ketone, and tetrahydrofuran is taken in an amount of 20 wt.%, Cyclohexanone in an amount of 20 wt.%, And dimethylformamide in the amount of 40 May.%.
The table shows the comparative characteristics of adhesive joints.
Determination of the resistance of adhesive joints on pressure pipes of unplasticized inhyl chloride to form cracks due to internal stresses.
Pipes of unplasticized polyvinyl chloride with a diameter of 50 mm
0
five
0
five
55
by gluing, the compositions given are joined using plasticized polyvinyl chloride couplings.
five
The definition of the pressure according to the industrial standard of Germany N 16970. This standard refers to the determined long-term strength under internal pressure, which, under the conditions of an internal pressure of 51 bar at room temperature or under the conditions of an internal pressure of 16 bar with and taking into account the gap + 0.6 mm should not be less than 1000 hours, as well as to the definition of prrichnosti to cut under pressure, which with a gap of -0.2 mm should be at least
7 N /
mm
and when the gap is +0.6 mm - not
less than 5 N / mm1. In this case, the shear strength is determined after storage of the samples for 12 months at room temperature and at a temperature of 50 ° C.
Resistance to storage (at a temperature not exceeding 25 ° C) of the proposed composition is not less than 20 months.
45 Form
ula invention
0
five
0
A composition for bonding molded articles from non-insulated polyvinyl chloride, including pbilivinyl chloride with Fikenther constant 58, tetrahydrofuran, cyclohexanone, and dimethylformamide, which works as an employee for working with glue to work it additionally contains polyvinyl chloride with Fikentscher constant 50 and methylethinketone in the following ratio of components, May.
Watering inyl chloride
five
with Fikentscher constant 58 Polyvinyl chloride with Fikentscher constant 50 Tetragndrofuran Methyl ethyl ketone Piclohexanone Dimethylformamide
10-16
4-10 20-35 25-35 15-20 5

权利要求:
Claims (1)
[1]
Composition for bonding molded products made of non-plasticized polyvinyl chloride, including pbvinyl chloride with Fikentcher constant 58, tetrahydrofuran, cyclohexanone and dimethylformamide, because of the fact that, in order to increase the strength of adhesive joints working under pressure, it is additionally contains polyvinyl chloride with a Fikentcher constant of 50 and methyl ethyl ketone in the following ratio of components.

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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DE19853512537|DE3512537A1|1985-04-06|1985-04-06|MEANS FOR GLUING MOLDED PVC MOLDED PARTS|LV930385A| LV5280A3|1985-04-06|1993-05-21|Composition from non-plasticized polyvinyl chloride formate limesan|