Patent ID: 6043316
Filing Date: 2000-03-28
Classification: C09D

Abstract:
A process for making a compatible crosslinked composition which comprises the steps of:(a) mixing together from 10 to 80 percent by weight of a hydroxy functional polydiene polymer having a functionality of at least 1.3, from 8 to 60 percent by weight of an amino resin crosslinking agent, and from 2 to 40 percent by weight of a reinforcing agent which has at least two functional groups which will react with the amino resin crosslinking agent, said functional groups selected from the group consisting of hydroxyl, carboxylic acid or anhydride, or amide functionality, wherein the reinforcing agent has an equivalent weight from 30 to 150 grams per functional group, and(b) partially reacting the polydiene polymer, amino resin, and reinforcing agent at 60 to 120.degree. C. for 0.5 to 10 hours, optionally in the presence of a small amount of crosslinking catalyst, such that a phase-stable mixture is obtained,(c) applying the partially reacted mixture to a substrate, and(d) crosslinking the applied mixture by baking at 100 to 250.degree. C. for 0.01 to 2 hours, optionally in the presence of additional crosslinking catalyst.