Coating compositions, their preparation, and coated articles made therefrom
AssigneeGeneral Electric Company
InventorsGlen Merfeld, Rainer Koeniger, Ali Acar, Paul Sybert, Zhaohui Su
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Abstract
A coating composition comprising components A, B and optionally C, wherein component A comprises at least one hydroxy-terminated polyarylate. Component B is an organic species which can react with the hydroxy terminal groups of component A, and component C is a catalyst or mixture of catalysts. The hydroxy-terminated polyarylates are prepared by a solution polymerization method.
Claims23
1-36. (canceled)
A method of making a polyarylate comprising structural units derived from at least one dihydroxy-substituted aromatic hydrocarbon and at least one aromatic dicarboxylic acid dichloride, said polyarylate further comprising phenolic hydroxy groups, said method comprising the steps of:
- (a) combining at least one dihydroxy-substituted aromatic hydrocarbon moiety, and at least one organic base in an inert organic solvent to form a mixture, said dihydroxy-substituted aromatic hydrocarbon moiety being substantially soluble in said mixture, said dihydroxy-substituted aromatic hydrocarbon being used in an amount corresponding to a molar amount of dihydroxy-substituted aromatic hydrocarbon moieties;
- (b) adding to the mixture formed in step (a) at least one dicarboxylic acid dichloride in a molar amount such that the molar amount of dicarboxylic acid dichloride in the mixture is stoichiometrically deficient relative to the total molar amount of dihydroxy-substituted aromatic hydrocarbon moieties, to form a reaction mixture;
- and
- (c) agitating the reaction mixture formed in step (b) until essentially all of the dicarboxylic acid dichloride has reacted.
A method of making an oligomeric polyarylate comprising structural units having formula I
- wherein R1 is independently at each occurrence a C1-C12 alkyl radical and n is 0-3, said polyarylate further comprising phenolic hydroxy groups, said method comprising the steps of:
- (a) combining at least one resorcinol moiety, and at least one organic base in an inert organic solvent to form a mixture, said resorcinol moiety being substantially soluble in said mixture, said resorcinol being used in an amount corresponding to a molar amount of resorcinol moieties;
- (b) adding to the mixture formed in step (a) at least one dicarboxylic acid dichloride in a molar amount such that the molar amount of dicarboxylic acid dichloride in the mixture is stoichiometrically deficient relative to the total molar amount of resorcinol moieties, to form a reaction mixture;
- and
- (c) agitating the reaction mixture formed in step (b) until essentially all of the dicarboxylic acid dichloride has reacted.
58-60. (canceled)
Dependencies are inferred from the claim text.