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AssigneeFirestone Fibers & Textiles Company, LLC
InventorsLaura S. Kocsis, William L. Hergenrother, Terrence E. Hogan, Kevin J. Bishop, Waruna C. B. Kiridena
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A functionalized polyamide is prepared by reacting a thio acid with an amide monomer or a mixture of a diamine and a dicarboxylic acid. In the reaction, the amide monomer is preferably a lactam compound, the thio acid has a formula of HOOC-A-SH wherein A represents an alkylene group containing from 1 to 10 carbon atoms, the diamine is an aliphatic diamine and the dicarboxylic acid is a aliphatic dicarboxylic acid. The functionalized polyamide can be vulcanized directly with rubber, which results in the use of less dip for adhering the tire cord to the rubber.
A process of preparing a functionalized polyamide comprising reacting a thio acid with (i) an amide monomer or (ii) a mixture of a diamine and a dicarboxylic acid, wherein the thio acid has the general formula HOOC-A-SH wherein A represents an alkylene group containing from 2 to 10 carbon atoms, further wherein 0.01 to 2 weight percent of the thio acid, based upon the weight of the (i) the amide monomer or (ii) the mixture of the diamine and the dicarboxylic acid, is used to prepare the functionalized polyamide.
A functionalized polyamide comprising a terminal free thiol prepared by a process comprising reacting a thio acid with (i) an amide monomer or (ii) a mixture of a diamine and a dicarboxylic acid, wherein the thio acid has the general formula HOOC-A-SH wherein A represents an alkylene group containing from 2 to 10 carbon atoms, further wherein 0.01 to 2 weight percent of the thio acid, based upon the weight of the (i) the amide monomer or (ii) the mixture of the diamine and the dicarboxylic acid, is used to prepare the functionalized polyamide.
Dependencies are inferred from the claim text.