Patent ID: 6562463
Filing Date: 2003-05-13
Classification: C08G,C09D,Y10T

Abstract:
A one-component stoving composition, which has a storage stability of greater than 2 weeks at room temperature and comprisesA) a polyhydroxy component comprising one or more compounds having at least 2 hydroxyl groups selected from the group consisting of polyacrylates, polyesters, polycarbonates, polyethers, polyurethanes, polydiene resins, and epoxy resins; the polyhydroxy component being free from amino groups; B) a cross-linking component comprising one or more compounds selected from the group consisting of compounds containing at least two cyclic carbonate groups in the form of six-membered rings which are the urethane group-containing reaction products of a hydroxy-functional compound containing a cyclic carbonate group in the form of a six-membered ring with a polyisocyanate compound having an average NCO functionality of at least two: the cross-linking component being capable of reacting with the polyhydroxy component: and C) a catalyst component comprising dibutyltin diacetate or sodium laurate; wherein the polyhydroxy component and the crosslinking agent component are present at an equivalent ratio of carbonate groups:OH groups of 0.5:1 to 2.0:1.