초록 ▼

The present invention provides a high support (HS) and high support-high resilience (HS-HR) flexible polyurethane foams prepared by catalyzed reaction of one or more di- or polyisocyanates at an isocyanate index from about 70 to about 130 with:(a) a polyoxyalkylene polyol or polyoxyalkylene polyol b

The present invention provides a high support (HS) and high support-high resilience (HS-HR) flexible polyurethane foams prepared by catalyzed reaction of one or more di- or polyisocyanates at an isocyanate index from about 70 to about 130 with:(a) a polyoxyalkylene polyol or polyoxyalkylene polyol blend having an average hydroxyl weight of at least about 1000 and an average primary hydroxyl content of at least about 25%; and(b) an effective amount of a blowing agent containing water;in the presence of from about 0.01 to about 0.5% parts by weight based on 100 parts by weight of said polyol component of a liquid hydrocarbon containing greater than 50% of polymerized butadiene. The high support (HS) and high support-high resilience (HS-HR) flexible polyurethane foams of the present invention have a reduced force to crush (FTC).

대표청구항 ▼

1. A high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam prepared by the catalyzed reaction of one or more di- or polyisocyanates at an isocyanate index from about 70 to about 130 with:(a) a polyoxyalkylene polyol or polyoxyalkylene polyol blend having an average hyd

1. A high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam prepared by the catalyzed reaction of one or more di- or polyisocyanates at an isocyanate index from about 70 to about 130 with:(a) a polyoxyalkylene polyol or polyoxyalkylene polyol blend having an average hydroxyl equivalent weight of at least about 1000 and an average primary hydroxyl content of at least about 25%; and (b) an effective amount of a blowing agent comprising water, in the presence of from about 0.01 to about 0.5 parts by weight based on 100 parts by weight of said polyol component (a) of a liquid hydrocarbon comprising greater than 50% of polymerized butadiene.2. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said liquid hydrocarbon comprises from about 0.01 to about 0.3 parts by weight.3. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said polyol component (a) comprises a polyoxyalkylene polyol at least partially prepared in the presence of a double metal cyanide complex oxyalkylation catalyst.4. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said polyol polyoxyalkylene blend comprises at least one polyol comprising a polyoxyalkylene polyol at least partially prepared in the presence of a double metal cyanide complex oxyalkylation catalyst.5. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said polyol blend further includes one or more polyol polymer dispersions effective to provide a solids content of from about 3 to about 50 weight percent based on the weight of said polyol blend.6. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said isocyanate index is between about 80 and about 120.7. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said isocyanate index is between about 90 and about 115.8. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said blowing agent comprises water in an amount from about 1 to about 7 parts by weight per 100 parts of said polyol component (a).9. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said blowing agent comprises water in an amount from about 1 to about 5 parts by weight per 100 parts of said polyol component (a).10. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said liquid hydrocarbon is free of isocyanate reactive groups.11. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said blowing agent further includes at least one member selected from the group consisting of dichloromethane, difluorodichloromethane, 1,1-dichloro-1-fluoroethane, 1,1,2-trichloro-1,2,2-trifluoroethane, hydrofluorocarbons (HFC's), perfluorocarbons (PFC's), lower alkanes low molecular weight ethers and ketones, air and liquid CO2 under pressure.12. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 1, wherein said liquid hydrocarbon comprises polybutadiene.13. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 12, wherein less than 65% of unsaturation in said polybutadiene is of 1,2 vinyl type.14. The high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam according to claim 12, wherein less than 50% of unsaturation in said polybutadiene is of 1,2 vinyl type.15. A method for producing a high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam comprising reacting one or more di- or polyisocyanates at an index from about 70 to about 130 and in the presence of a catalyst with(a) a polyoxyalkylene polyol or polyoxyalkylene polyol blend having an average hydroxyl equivalent weight of at least about 1000 and an average primary hydroxyl content of at least about 25%, and (b) an effective amount of a blowing agent comprising water, in the presence of from about 0.01 to about 0.5 parts by weight based on 100 parts by weight of said polyol component of a liquid hydrocarbon comprising greater than 50% of polymerized butadiene.16. The method according to claim 15, wherein said polyol component (a) comprises a polyoxyalkylene polyol at least partially prepared in the presence of a double metal cyanide complex oxyalkylation catalyst.17. The method according to claim 15, wherein said polyol polyoxyalkylene blend comprises at least one polyol comprising a polyoxyalkylene polyol at least partially prepared in the presence of a double metal cyanide complex oxyalkylation catalyst.18. The method according to claim 15, wherein said polyol blend further includes one or more polyol polymer dispersions effective to provide a solids content of from about 3 weight percent to about 50 weight percent based on the weight of said polyol blend.19. The method according to claim 15, wherein said isocyanate index is between about 80 and about 120.20. The method according to claim 15, wherein said isocyanate index is between about 90 and about 115.21. The method according to claim 15, wherein said blowing agent comprises water in an amount from about 1 to about 7 parts by weight per 100 parts of said polyol component (a).22. The method according to claim 15, wherein said blowing agent comprises water in an amount from about 1 to about 5 parts by weight per 100 parts of said polyol component (a).23. The method according to claim 15, wherein said liquid hydrocarbon is free of isocyanate reactive groups.24. The method according to claim 15, wherein said blowing agent further includes at least one member selected from the group consisting of dichloromethane, difluorodichloromethane, 1,1-dichloro-1-fluoroethane, 1,1,2-trichloro-1,2,2-trifluoroethane, hydrofluorocarbons (HFC's), perfluorocarbons (PFC's), lower alkanes low molecular weight ethers and ketones, air and liquid CO2 under pressure.25. The method according to claim 15, wherein said liquid hydrocarbon comprises polybutadiene.26. The method according to claim 25, wherein less than 65% of unsaturation in said polybutadiene is of 1,2 vinyl type.27. The method according to claim 25, wherein less than 50% of unsaturation in said polybutadiene is of 1,2 vinyl type.28. A method of reducing force to crush (FTC) of a high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam comprising combininga) a polyoxyalkylene polyol or polyoxyalkylene polyol blend having an average hydroxyl equivalent weight of at least about 1000 and an average primary hydroxyl content of at least about 25%, b) an effective amount of a blowing agent comprising water, c) from about 0.01 to about 0.5 parts by weight based on 100 parts by weight of said polyol component of a liquid hydrocarbon comprising greater than 50% of polymerized butadiene, and reacting a), b) and c) in the presence of a catalyst with one or more di- or polyisocyanates at an index from about 70 to about 130, wherein the resulting high support (HS) or high support-high resilience (HS-HR) flexible polyurethane foam has a reduced force to crush (FTC).29. The method according to claim 28, wherein said polyol component a) comprises a polyoxyalkylene polyol at least partially prepared in the presence of a double metal cyanide complex oxyalkylation catalyst.30. The method according to claim 28, wherein said polyol polyoxyalkylene blend comprises at least one polyol comprising a polyoxyalkylene polyol at least partially prepared in the presence of a double metal cyanide complex oxyalkylation catalyst.31. The method according to claim 28, wherein said polyol blend further includes one or more polyol polymer dispersions effective to provide a solids content of from about 3 weight percent to about 50 weight percent based on the weight of said polyol blend.32. The method according to claim 28, wherein said isocyanate index is between about 80 and about 120.33. The method according to claim 28, wherein said isocyanate index is between about 90 and about 115.34. The method according to claim 28, wherein said blowing agent comprises water in an amount from about 1 to about 7 parts by weight per 100 parts of said polyol component (a).35. The method according to claim 28, wherein said blowing agent comprises water in an amount from about 1 to about 5 parts by weight per 100 parts of said polyol component (a).36. The method according to claim 28, wherein said liquid hydrocarbon is free of isocyanate reactive groups.37. The method according to claim 28, wherein said liquid hydrocarbon comprises polybutadiene.38. The method according to claim 37, wherein less than 65% of unsaturation in said polybutadiene is of 1,2 vinyl type.39. The method according to claim 37, wherein less than 50% of unsaturation in said polybutadiene is of 1,2 vinyl type.40. The method according to claim 28, wherein said blowing agent further includes at least one member selected from the group consisting of dichloromethane, difluorodichloromethane, 1,1-dichloro-1-fluoroethane, 1,1,2-trichloro-1,2,2-trifluoroethane, hydrofluorocarbons (HFC's), perfluorocarbons (PFC's), lower alkanes low molecular weight ethers and ketones, air and liquid CO2 under pressure.