C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/5750
C08G 63/52 (2006.01) C08F 299/04 (2006.01) C08G 63/676 (2006.01) C08K 7/02 (2006.01) C08L 67/06 (2006.01)
Patent
CA 1148683
ABSTRACT OF THE DISCLOSURE This invention involves a curable liquid mix- ture comprising (a) a polyester of the following formula: Image wherein n has an average value between about 1.5 and about 2, m is 2-n, R is the hydroxyl-free residue of a predominant- ly hydroxyl terminated polyester obtained by the condensa- tion of a diol selected from the class consisting of 1,2- propylene glycol, 1,3-butanediol, 2,2-dimethyl-1,3-pro- panadiol, dipropylene glycol, diethylene glycol, 2,2- dimethyl-3-hydroxyprpyl 2,2-dimethyl-3-hydroxypropionate, the ethylene and propulene oxide derivatives of 2,2-bis- (4-hydroxyphenyl) propane, and mixtures thereof, and mix- tures of ethylene glycol and said diols, with a dicarbox- ylic acid or anhydride selected from the class consisting of maleic acid and anhydride, fumaric acid, ortho-phth- alic acid and anhydride, isophthalic acid, terephthalic acid, carbic acid and anhydride, and mixtures thereof, (b) maleic anhydride and (c) an ethylenically unsaturated monomer which forms a homogeneous mixture with and is copolymerizable with (a) and (b), and wherein the molar ratio of polymerizable double bonds in (c) as compared to those in (a) plus (b) is between about 1 and about 3.6. These compositions have fast cure speeds and afford fiber reinforced composites with high stiffness and strength.
351020
Hopley William G.
Union Carbide Corporation
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