Patent ID: 7655309

Claim:
A process for preparing a polymer that coats a substrate, comprising: providing a polyisocyanate component including aromatic isocyanates, the polyisocyanate component having an NCO group content of about 3% to about 50% and an average functionality of about 2 to about 3; providing an isocyanate-reactive component, the isocyanate-reactive component including amines selected from the group consisting of aromatic primary and secondary amines and aliphatic primary and secondary amines, and from about 20% to about 90% by weight, based on 100% by weight of the isocyanate-reactive component, of at least one polysulfide compound having hydrosulfide (—SH) terminations, the isocyanate-reactive component having an NCO group content of 0%; reacting the polyisocyanate component and the isocyanate-reactive component using a high-pressure impingement mixing technique at a temperature in a range of about 145° F. to about 190° F.; and coating the substrate with the reaction product.