Patent ID: 7776399
Filing Date: 2010-08-17
Classification: C08G,C08J,C09D

Abstract:
1. A method for forming a polyurethane coated cellular polyvinylchloride board for use as siding, comprising: providing a polyurethane-based paint comprising a polyurethane-containing base product, a high volume solid, and a coupling agent; providing a catalyst; combining the polyurethane-based paint with the catalyst to form a coating, wherein the coating comprises a ratio of polyurethane-based paint to catalyst of about 2.6 to 1; coating the cellular polyvinylchloride board with the coating to form a coated cellular polyvinylchloride board; and curing the coated cellular polyvinylchloride board, where, after cure, the coating comprises about 31 to about 34 wt % of the polyurethane-containing base product, about 35 to about 41 wt % of the high volume solid about 9 to about 11 wt % of the coupling agent, and about 14 to about 23 wt % of the catalyst.