Soil release polymers having improved performance, stability...

Details Soil release polymers having improved performance, stability... Soil release polymers having improved performance, stability...

C - Chemistry, Metallurgy

08

G

402/187, 400/201

C08G 63/46 (2006.01) C08G 63/672 (2006.01) C08G 63/85 (2006.01) C11D 3/00 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2016997

Abstract Of The Disclosure A soil release promoting copolymer of poly(ethylene terephthalate/ethylene isophthalate) and poly(oxyethylene terephthalate/oxyethylene isophthalate) having a weight average molecular weight in the range of 6,000 to 40,000 is prepared by reacting an ethylene terephthalate/ethylene isophthalate copolymer with polyethylene glycol in the presence of a transesterification catalyst. The soil release promoting copolymer provides improved soil release properties for oil and greasy stains on polyester fabrics at high and low wash temperatures, is stable even at high alkalinity levels, and can be used at lower loadings than conventional soil release polymers without loss of efficacy.

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