Claims
- 1. In a process for making a cellular vinyl chloride polymer product by heating a foamable vinyl chloride polymer-containing plastisol, wherein the improvement comprises incorporating in the plastisol, which has a fusion and expansion temperature of about 200.degree. F. to 300.degree. F., vinyl chloride copolymer of vinyl chloride, vinyl acetate, and a bis(hydrocarbyl)vinylphosphonate, an effective amount for foaming of a blowing agent selected from the group consisting of a mixture of benzene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), a mixture of toluene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), and 4,4'-oxybis (benzene sulfonyl hydrazide) alone, and an effective amount of non-volatile organic base or oxidizing agent activator for said blowing agent, said activator being selected from the group consisting of urea, the C.sub.2 -C.sub.14 alkyl substituted ureas, the C.sub.2 -C.sub.14 monoalkyl, dialkyl and trialkyl monoamines, the C.sub.2 -C.sub.12 dialkyl or trialkyl diamines, the C.sub.2 -C.sub.14 dialkyl triamines, and the diaryl and C.sub.1 -C.sub.12 dialkyl peroxides.
- 2. A process as claimed in claim 1 wherein the amount of blowing agent ranges from about 0.5% to about 20% by weight of the plastisol.
- 3. A process as claimed in claim 1 wherein the amount of blowing agent ranges from about 3% to about 15% by weight of the plastisol.
- 4. A process as claimed in claim 1 wherein the activator is selected from the group consisting of triethylenediamine, ethylene diamine, ethylene triamine, propylene diamine and hexamethylene diamine.
- 5. A process as claimed in claim 1 wherein the activator is selected from the group consisting of benzoyl peroxide, lauroyl peroxide, di-t-butyl peroxide and diacetyl peroxide.
- 6. A process as claimed in claim 1 wherein the plastisol is heated to a temperature of about 200.degree. F. to about 300.degree. F.
- 7. A process as claimed in claim 1 wherein the plastisol contains about 25% to about 70% by weight of a plasticizer.
- 8. A process as claimed in claim 1 wherein the activator comprises about 0.5% to about 10% by weight of the plastisol.
- 9. A process as claimed in claim 1 wherein the blowing agent is present in an amount of from about 50% to 95% by weight of the amount of blowing agent and activator.
- 10. A process as claimed in claim 1 wherein the plastisol comprises a copolymer of from about 75% to about 85%, by weight, vinyl chloride, from about 7% to about 13% vinyl acetate, and from about 7% to about 13% bis (beta-chloroethyl) vinylphosphonate.
- 11. A process as claimed in claim 1 wherein a substrate is coated with the foamable plastisol and the plastisol is thereafter heated.
- 12. A vinyl chloride polymer-containing plastisol composition having a fusion and expansion temperature of from about 200.degree. F. to 300.degree. F. which comprises a vinyl chloride copolymer of vinyl chloride, vinyl acetate, and a bis(hydrocarbyl)vinylphosphonate, an effective amount for foaming of a blowing agent selected from the group consisting of a mixture of benzene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), a mixture of toluene sulfonyl hydrazide and 4,4'-oxybis (benzene sulfonyl hydrazide), and 4,4'-oxybis (benzene sulfonyl hydrazide) alone, and an effective amount of a nonvolatile organic base or oxidizing agent activator for said blowing agent, said activator being selected from the group consisting of urea, the C.sub.2 -C.sub.14 alkyl substituted ureas, the C.sub.2 -C.sub.14 monoalkyl, dialkyl and trialkyl monoamines, the C.sub.2 -C.sub.14 dialkyl or trialkyl diamines, the C.sub.2 -C.sub.14 dialkyl triamines, and the diaryl and C.sub.1 -C.sub.12 dialkyl peroxides.
- 13. A composition as claimed in claim 12 wherein the amount of blowing agent ranges from about 0.5% to about 20% by weight of the plastisol.
- 14. A composition as claimed in claim 12 wherein the amount of blowing agent ranges from about 3% to about 15% by weight of the plastisol.
- 15. A composition as claimed in claim 12 wherein the activator is selected from the group consisting of triethylenediamine, ethylene diamine, ethylene triamine, propylene diamine and hexamethylene diamine.
- 16. A composition as claimed in claim 12 wherein the activator is selected from the group consisting of benzoyl peroxide, lauroyl peroxide, di-t-butyl peroxide and diacetyl peroxide.
- 17. A composition as claimed in claim 12 wherein the plastisol contains about 25% to about 70% by weight of a plasticizer.
- 18. A composition as claimed in claim 12 wherein the accelerator comprises about 0.5% to about 10% by weight of the plastisol.
- 19. A composition as claimed in claim 12 wherein the plastisol comprises a copolymer of from about 75% to about 85%, by weight, vinyl chloride, from about 7% to about 13% vinyl acetate and from about 7% to about 13% bis (beta-chloroethyl) vinylphosphonate.
- 20. A composition as claimed in claim 12 wherein the blowing agent is present at from about 50% to about 95% by weight of the amount of blowing agent and activator.
- 21. The product resulting from the process of claim 1.
- 22. The product resulting from the process of claim 11.
Parent Case Info
This is a continuation application of U.S. application Ser. No. 785,983, filed Apr. 8, 1977, now abandoned, which in turn was a continuation of U.S. application Ser. No. 598,522, filed July 25, 1975, also now abandoned.
US Referenced Citations (4)
Continuations (2)
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Number |
Date |
Country |
Parent |
785983 |
Apr 1977 |
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Parent |
598522 |
Jul 1975 |
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