Patent ID: 6096237
Filing Date: 2000-08-01
Classification: C08G

Abstract:
A polyisocyanate composition comprising, based on the total weight of the composition:a) from about 35.0 to about 55.0 weight percent diphenylmethane 4,4'-diisocyanate;b) from about 7.0 to about 15.0 weight percent diphenylmethane 2,4'-diisocyanate;c) from about 0.01 to about 4.0 weight percent diphenylmethane 2,2'-diisocyanate;d) from about 10.0 to about 24.0 weight percent 3-ring polymethylene polyphenylpolyisocyanate; ande) from about 20.0 to about 40.0 weight percent 4-ring and higher oligomericwherein the composition has an average viscosity of from about 70 to about 130 centipoise at 250.degree. C., the weight percent amounts of components a)-e) total 100, and the weight percent ratio of diphenylmethane 2,4'-diisocyanate to diphenylmethane 4,4'-diisocyanate is between 1:5.5 to 1:2.5.