Patent ID: 7196158
Filing Date: 2007-03-27
Classification: C08G,D01F,Y10T

Abstract:
1. A ployethylene terephthalate fiber knitted or woven fabric formed from yarns comprising ployethylene terephthalate fibers which has been produced by polycondensing a terephthalate diester of ethylene glycol in the presence of a catalyst, wherein the catalyst comprises at least one member selected from mixtures (1) and reaction products (2); (1) the mixtures (1) for the catalyst comprises a titanium compound component (A) mixed with phosphorus compound component (B), in which mixtures (1), the component (A) comprises at least one member selected from the group consisting of (a) titanium alkoxides represented by the general formula (I): in which formula (I), R  in which formula (II), n represents an integer of 2 to 4, or anhydrides of the acids of the formula (II); and the component (B) comprising at least one phosphorus compound represented by the general formula (III):  in which formula (III), R the mixture (1) for the catalyst for the polycondensation being employed in an amount satisfying the requirements represented by the following expressions of relation (i) and (ii):  wherein M (2) the reaction products (2) for the catalyst comprises a component (C) reacted with a component (D), in which reaction products (2), the component (C) comprises at least one member selected from the group consisting of (C) titanium alkoxides represented by the general formula (IV):  in which formula (IV), R the component (D) comprises at least one phosphorus compound represented by the general formula (V):  in which formula (V), R and when the fabric is knitted fabric, the knitted fabric has a wale density of 40 to 80 yarns/2.54 cm and a course density of 30 to 70 yarns/2.54 cm, and when the fabric is a woven fabric, the woven fabric has a cover factor (CF) of 1000 to 3500, which cover factor (CF) is defined as follows: wherein DW