Patent ID: 6576716
Filing Date: 2003-06-10
Classification: C08G,D06M

Abstract:
A method of producing a sulfonated polyester compound suitable for use as a soil releasing agent or a textile sizing agent comprising:a) reacting at least one compound of Formula (I) XSO3â€”Râ€”(COOY)nâ€ƒâ€ƒ(I) â€ƒwherein X is a cation, R is an aryl group which may be substituted with an alkyl group or an aryl group, Y is selected from the group consisting of hydrogen and an alkyl group, and n is a positive integer with at least one compound of Formula (II)R1â€”(OH)mâ€ƒâ€ƒ(II) wherein R1 is selected from the group consisting of an alkyl group, a cycloalkyl group and an aryl group which groups may be substituted with an alkyl group or an aryl group, and m is a positive integer to produce at least one ester compound intermediate,b) reacting the ester compound intermediate with a homo-or co-poly(ethylene terephthalate) to produce a reaction mixture containing the sulfonated polyester compound, and c) isolating the sulfonated polyester compound from the reaction mixture produced in step (b).