Patent Number: 6,254,645

Title: Enzymatic modification of the surface of a polyester fiber or article

Abstract: A method is provided for improving the uptake of a cationic compound onto a polyester article starting material, comprising the steps of: (a) obtaining a polyesterase enzyme; (b) contacting said polyesterase enzyme with said polyester article starting material under conditions and for a time suitable for said polyesterase to produce surface modification of said polyester article starting material and produce a surface modified polyester; (c) contacting said modified polyester article, subsequently or simultaneously with said step (b) with a cationic compound whereby adherence of said cationic compound to said modified polyester is increased compared to said polyester starting material. Also disclosed is a method for increasing the hydrophilicity of a polyester to improve fabric characteristics such as stain resistance, wettability and/or dyeability.

Inventors: Kellis, Jr.; James T. (Portola Valley, CA), Poulose; Ayrookaran J. (Belmont, CA), Yoon; Mee-Young (Palo Alto, CA)

Assignee: Genencor International, Inc.

International Classification: D06P 3/52 (20060101); D06P 5/22 (20060101); D06P 3/34 (20060101); D06M 16/00 (20060101); D06P 1/00 (20060101); C09B 067/00 (); D06M 001/02 (); C12S 011/00 ()

Expiration Date: 07/03/2018