Patent ID: 9458318
Filing Date: 2016-10-04
CPC Classification: C08G,C08L,G02B

Claim Text:
1. A solvent-free polyisocyanate mixture A) comprising: 5 to 95 wt.% based on a total wt. of polyisocyanate mixture A) of at least one polyisocyanate a-1), said at least one polyisocyanate a-1) being based on hexamethylene diisocyanate, said at least one polyisocyanate a-1) having an NCO content of from 16 to 24 wt.% based on a total wt. of polyisocyanate a-1), and said at least one polyisocyanate a-1) exhibiting a viscosity at 23° C. of from 70 to 12,000 mPas; and 95 to 5 wt.% based on a total wt. of polyisocyanate mixture A) of at least one polyisocyanate a-2), said at least one polyisocyanate a-2) being based on araliphatic diisocyanate, said at least one polyisocyanate a-2) having an NCO content of from 10 to 22 wt.% based on a total wt. of polyisocyanate a-2), said at least one polyisocyanate a-2) having a monomer araliphatic diisocyanate content of less than 1.0 wt.% based on a total wt. of polyisocyanate a-2), and said at least one polyisocyanate a-2) either being a solid at 23° C. or exhibiting a viscosity at 23° C. of more than 150,000 mPas; said at least one polyisocyanate a-1) being different from said at least one polyisocyanate a-2); and said polyisocyanate mixture A) having a total content of isocyanate groups of from 11 to 23 wt.% based on a total wt. of polyisocyanate mixture A), said polyisocyanate mixture A) having a mean isocyanate functionality of at least 2.3, and said polyisocyanate mixture A) having a monomeric diisocyanate content of less than 1 wt. % based on a total wt. of polyisocyanate mixture A).