Claims
- 1. An isocyanate-reactive composition for use in the manufacture of flexible foam, comprising:
- (a) at least one compound having a plurality of isocyanate-reactive groups; and
- (b) an internal mold release agent consisting essentially of a fatty polyamine having the formula
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4.
- 2. The composition of claim 1 wherein R.sup.1 is an alkyl group containing 12 to 35 carbon atoms, R.sup.2 is an alkylene group containing 2 to 4 carbon atoms, and x has a value in the range of 1 to 3.
- 3. The composition of claim 1 wherein R.sup.1 is selected from the group consisting of linear decyl, dodecyl, hexadecyl and octadecyl.
- 4. The composition of claim 2 wherein R.sup.1 is octadecyl, R.sup.2 is (CH.sub.2).sub.3 -- and x has a value in the range of 1 to 3.
- 5. The composition of claim 1 wherein the compound containing a plurality of isocyanate-reactive groups is selected from the group consisting of polythioether, polyester, polyesteramide, polycarbonate, polyacetal, polyolefin, polysiloxane and polyether polyols.
- 6. The composition of claim 5 wherein said compound containing a plurality of isocyanate-reactive groups comprises 10 to 99% of a compound having a molecular weight of 1500 to 10,000.
- 7. The composition of claim 5 wherein the polyol is a polyether polyol.
- 8. The composition of claim 7 wherein the polyether polyol is selected from the group consisting of polyoxyethylene, polyoxypropylene, and poly(oxyethylene-oxypropylene) diols and triols.
- 9. A reaction system for preparing flexible polyurethane or polyurea articles comprising:
- (a) an organic polyisocyanate; and
- (b) an isocyanate-reactive composition comprising:
- (i) at least one compound having a plurality of isocyanate-reactive groups; and
- (ii) an internal mold release agent consisting essentially of a fatty polyamine having the formula
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4.
- 10. The reaction system of claim 9 wherein R.sup.1 is an alkyl group containing 12 to 35 carbon atoms, R.sup.2 is an alkylene group containing 2 to 4 carbon atoms, and x has a value in the range of 1 to 3.
- 11. The reaction system of claim 9 wherein R.sup.1 is selected from the group consisting of linear decyl, dodecyl, hexadecyl and octadecyl.
- 12. The reaction system of claim 10 wherein R.sup.1 is octadecyl, R.sup.2 is --(CH.sub.2).sub.3 -- and x has a value in the range of 1 to 3.
- 13. The reaction system of claim 9 wherein the polyisocyanate is an aromatic polyisocyanate.
- 14. The reaction system of claim 11 wherein the polyisocyanate is selected from the group consisting of 4,4'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, polymeric MDI, an MDI variant, and mixtures thereof.
- 15. The reaction system of claim 9 wherein the polyisocyanate comprises an isocyanate-terminated prepolymer.
- 16. The reaction system of claim 13 wherein the isocyanate-terminated prepolymer is the reaction product of an MDI stream and a polyol.
- 17. The reaction system of claim 9 wherein the compound containing a plurality of isocyanate reactive groups is selected from the group consisting of polythioether, polyester, polyesteramide, polycarbonate, polyacetal, polyolefin, polysiloxane and polyether polyols.
- 18. The composition of claim 17, wherein said compound containing a plurality of isocyanate-reactive groups comprises 10 to 99% of a compound having a molecular weight of 1500 to 10,000.
- 19. The reaction system of claim 17 wherein the polyol is a polyether polyol.
- 20. The reaction system of claim 19 wherein the polyether polyol is selected from the group consisting of polyoxyethylene, polyoxypropylene and poly(oxyethylene-oxypropylene) diols and triols.
- 21. A process for preparing a molded polyurethane or polyurea flexible foam article comprising the steps of:
- (a) introducing into a mold an organic polyisocyanate and an isocyanate-reactive composition comprising:
- (i) at least one compound having a plurality of isocyanate-reactive groups; and
- (ii) an internal mold release agent consisting essentially of a fatty polyamine having the formula:
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4;
- (b) reacting the polyisocyanate and the isocyanate-reactive composition to form a molded article; and
- (c) removing the molded article from the mold.
- 22. A process for preparing a molded polyurethane or polyurea flexible foam article comprising the steps of:
- (a) introducing into a mold an organic polyisocyanate, a blowing agent, and an isocyanate reactive composition comprising:
- (i) at least one compound having a plurality of isocyanate-reactive groups; and
- (ii) an internal mold release agent consisting essentially of a fatty polyamine having the formula:
- R.sup.1 --(NH--R.sup.2).sub.x --NH.sub.2
- wherein R.sup.1 is an alkyl group containing 8 to 40 carbon atoms, R.sup.2 is a divalent linking group containing 1 to 8 carbon atoms, and x has a value in the range of 1 to 4;
- (b) reacting the polyisocyanate, the blowing agent and the isocyanate-reactive composition to form a molded flexible foam article; and
- (c) removing the molded article from the mold.
- 23. The process of claim 19 wherein the article is a low density flexible foam article.
- 24. The process of claim 20 wherein the article is a low density flexible foam article.
- 25. The process of claim 20 wherein the blowing agent comprises water.
Parent Case Info
This application is a continuation of Ser. No. 08/224,892 filed Apr. 8, 1994 now abandoned.
US Referenced Citations (13)
Continuations (1)
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Number |
Date |
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224892 |
Apr 1994 |
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