Flexible polyurethane foams prepared using low unsaturation polyether polyols
Patent 5010117 Issued on April 23, 1991. Estimated Expiration Date: 
June 16, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 16, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3405077 3432448 InventorsAssigneeApplicationNo. 367279 filed on 06/16/1989US Classes:521/159, N=C=X reactant having at least two C-NH-C(=X)- groups, e.g., prepolymers, etc.521/137, At least one polymer is derived from a -N=C=X reactant wherein X is a chalcogen atom or wherein the polymer-forming system contains the same type of reactant521/163, With nitrogen containing reactant521/167, Nitrogen reactant contains a N-(C-C-O)-group521/174-XH reactant contains a C-X-C groupExaminersPrimary: Welsh, Maurice J.International ClassC08G 018/14AbstractFlexible polyurethane foams are prepared from poly(propylene oxide) polymers having low levels of monofunctional impurities. The resulting foam has improved processing characteristics and compression set.Field of SearchN=C=X reactant having at least two C-NH-C(=X)- groups, e.g., prepolymers, etc.-XH reactant contains a C-X-C group At least one polymer is derived from a -N=C=X reactant wherein X is a chalcogen atom or wherein the polymer-forming system contains the same type of reactant Nitrogen reactant contains a N-(C-C-O)-group With nitrogen containing reactant | |
