Process for producing polyoxyalkylene glycol modified polyesters

Claim 1

A process for the catalytic manufacture of solid fiber forming polyesters of dicarboxylic acid compounds and aliphatic glycols modified with from 2 to 10 weight percent of a polyoxyalkylene glycol of the general formula: ##STR6## wherein X is hydrogen or methyl and n has an average value of from 4 to 250,000 when X is hydrogen and an average value of from 4 to 1,000 when X is methyl, in contact with a catalytic amount sufficient to catalyze the reaction of (I) a coordination complex catalyst composition of (A) and (C) or (II) the coordination complex catalyst of (A), (B) and (C); wherein: (A) is a metal halide of a metal selected from the group consisting of titanium, zirconium, zinc, germanium, tin, lead antimony and bismuth; (B) is antimony glycollate; (C) is a silicon compound selected from the group consisting of: ##STR7## wherein W is CH 2 =CX-- or ##STR8## X is hydrogen or methyl and is methyl only when m is one; R* is alkyl or haloalkyl having from 1 to 4 carbon atoms; R** is methyl, ethyl, butyl, acetoxy, methoxy, ethoxy or butoxy; R is methyl, ethyl, butyl, methoxy, ethoxy, butoxy or trimethylsiloxy; R' is methyl, methoxy, ethoxy, butoxy or trimethylsiloxy; R" is methoxy, ethoxy, butoxy, trimethylsiloxy or vinyldimethylsiloxy; R"' is methyl, ethyl, butyl or trimethylsilyl; Me is methyl; Z is methyl or W; Q is an NH 2 CH 2 --, NH 2 CH 2 CH 2 NHCH 2 --, NC--, HS-- or HSCH 2 CH 2 S-- group; n is an integer having a value of from 2 to 5; m is an integer having a value of zero or one; x is an integer having a value of from 1 to 100; and y is an integer having a value of from 1 to 100; and wherein the mole ratio of (A):(C) is from 1:0.5 to 1:10 and the mole ratio of (B):(C) is from 0.2:1 to 2:1 in said coordination complex catalyst composition.