Patent ID: 8415471

Claim:
An allophanate-modified, partially trimerized cycloaliphatic diisocyanate which is characterized by a low T g , and which comprises the reaction product of: (1) organic diisocyanate having cycloaliphatically bound isocyanate groups, with (2) an hydroxyl-functional organic compound having a molecular weight of 200 to 2,000 and a functionality of greater than 1 to less than or equal to 2.9, in the presence of (3) at least one suitable catalyst, wherein the organic diisocyanate component (1) is free of diisocyanates which have aliphatically bound isocyanate groups and/or of diisocyanates which have aromatically bound isocyanate groups, and wherein the T g of the resultant product ranges from about −30° C. to about 40° C. and is measured after the removal of an unreacted excess monomer from the resultant product.