Sandra Kay Rice

US Patent:

49217640, May 1, 1990

Filed:

Feb 6, 1989

Appl. No.:

7/306115

Inventors:

David Rudd - Naples NC
Sandra W. Rice - Greer SC

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

B32B 2706

US Classification:

428480

Abstract:

An aqueous coating composition is provided for thermoplastic films comprising (i) from 1 to 10 weight percent based upon the total weight of the coating composition, of a sulfonated copolyester consisting essentially of the polyester condensation product of the following monomers or their polyester-forming equivalents: (A) about 65 to 95 mole percent of isophthalic acid; (B) about 0 to 30 mole percent of at least one aliphatic dicarboxylic acid of the formula HOOC(CH. sub. 2)--. sub. n COOH, wherein n ranges from about 1-11; (C) about 5 to about 15 mole percent of at least one sulfomonomer containing an alkali metal sulfonate group attached to a dicarboxylic aromatic nucleus; and (D) stoichiometric quantities of about 100 mole percent of at least one copolymerizable aliphatic or cycloaliphatic alkylene glycol having about from 2 to 11 carbon atoms, (ii) from 0. 05 to 3 weight percent, based upon the total weight of the coating composition, of at least one water soluble alkali metal salt of an unsaturated fatty acid having from 10 to 18 carbon atoms. The aqueous coating composition of the present invention, when applied to thermoplastic films, exhibits at least equivalent adhesion to subsequently applied metallic coatings and also exhibits superior winding performance in comparison to the prior art films.

US Patent:

48451894, Jul 4, 1989

Filed:

Dec 28, 1987

Appl. No.:

7/138228

Inventors:

David Rudd - Naples NC
Sandra W. Rice - Greer SC

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

C08G 6300

US Classification:

528272

Abstract:

An aqueous coating composition is provided for thermoplastic films comprising (i) from 1 to 10 weight percent, based upon the total weight of the coating composition, of a sulfonated copolyester consisting essentially of the polyester condensation product of the following monomers or their polyester-forming equivalents: (A) about 65 to 95 mole percent of isophthalic acid; (B) about 0 to 30 mole percent of at least one aliphatic dicarboxylic acid of the formula HOOC(CH. sub. 2)--. sub. n COOH, wherein n ranges from about 1-11; (C) about 5 to about 15 mole percent of at least one sulfomonomer containing an alkali metal sulfonate group attached to a dicarboxylic aromatic nucleus; and (D) stoichiometric quantities of about 100 mole percent of at least one copolymerizable aliphatic or cycloaliphatic alkylene glycol having about from 2 to 11 carbon atoms, (ii) from 0. 05 to 3 weight percent, based upon the total weight of the coating composition, of at least one water soluble alkali metal salt of an unsaturated fatty acid having from 10 to 18 carbon atoms. The aqueous coating composition of the present invention, when applied to thermoplastic films, exhibits at least equivalent adhesion to subsequently applied metallic coatings and also exhibits superior winding performance in comparison to the prior art films.