Patent ID: 6358620
Filing Date: 2002-03-19
Classification: B32B,C08G,C08K,C08L,Y10T

Abstract:
A chemically resistant thermosetting resin, having low contents of volatile organic components comprising:about 35 to about 45 parts by weight of ethylenically unsaturated reactive solvent; and about 65 to about 55 parts by weight of an unsaturated polyester produced by a process comprising: initially condensing dihydric alcohol containing from 2 to 10 carbon atoms and isophthalic acid while distilling off water of condensation to form a melt of polymer having an acid number in a range from about 5 to about 15 mg KOH/g polymer, then condensing the polymer and maleic anhydride while distilling off water of condensation to form a polymer of esterification having an acid number, AN, in a range from about 10 to about 30 mg KOH/g polymer, and further reacting the polymer of esterification with an amount of glycidyl methacrylate provide a weight ratio of glycidyl methacrylate to condensation polymer in a range of from about 0.001 AN to about 0.005 AN to form unsaturated isopolyester having an acid number in a range from about 1 to about 15 mg KOH/g of unsaturated polyester; and the thermosetting resin exhibits a Brookfield viscosity of less than about 1500 cps at 25Â° C.