Reduction of glycol ethers in polyesters

Details Reduction of glycol ethers in polyesters Reduction of glycol ethers in polyesters

1979-03-01

1980-10-28

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528302, 528309, 528495, 528496, 528501, C08G 6318

Patent

active

042308186

ABSTRACT:
A process for reducing the glycol ether content in polyesters involves adding a glycol to a polyester oligomer solution prior to polymerization, distilling the oligomer solution to remove vapor containing the glycol as well as the glycol ether, and polymerizing the solution to produce a polyester containing a reduced glycol ether content.

REFERENCES:
patent: 4077945 (1978-03-01), Heinze et al.
patent: 4128535 (1978-12-01), Baker
patent: 4146729 (1979-03-01), Goodley et al.

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