Patent ID: 6503980
Filing Date: 2003-01-07
Classification: C08G

Abstract:
A liquid, polyurethane plasticizer containing less than 13% by weight of allophanate, carbodiimide and/or uretonimine groups, and comprising the reaction product of:(A) at least one organic isocyanate component selected from the group consisting of allophanate modified isocyanates, carbodiimide modified isocyanates and uretonimine modified isocyanates, with (B) at least one isocyanate-reactive component selected from the group consisting of: (1) one or more isocyanate-reactive compounds having a molecular weight of more than about 1,000, and an OH number of about 9 to about 112, and a functionality of from about 2 to about 4; and (2) one or more monofunctional alcohols having a molecular weight of about 100 to about 1,000, an OH number of about 56 to about 560; optionally, followed by the addition of:(C) a stopper comprising a low molecular weight monoalcohol, with the proviso that (C) is present when (B)(1) is used as the sole isocyanate-reactive component; wherein components (A), (B) and (C) are present in amounts such that the NCO:OH equivalent ratio is about 1:1.