Capped 1,2-propylene terephthalate-polyoxyethylene terephthalate

Details Capped 1,2-propylene terephthalate-polyoxyethylene terephthalate Capped 1,2-propylene terephthalate-polyoxyethylene terephthalate

1986-04-15

1987-12-08

Barr, Josephine L.

Compositions

Fire-extinguishing

Foam-stabilizant or colloid-stabilizant containing

252 88, 25217423, 25217421, 25217422, 252DIG2, 252DIG15, 560 91, 428279, C11D 1700, D06M 900, C07C 6976

Patent

active

047117303

ABSTRACT:
Capped 1,2-propylene terephthalate-polyoxyethylene terephthalate polyesters useful as soil release agents are disclosed. Preferred polyesters have the formula: ##STR1## wherein each R.sup.1 is a 1,4-phenylene moiety; the R.sup.2 are essentially 1,2-propylene moieties; the R.sup.3 are essentially the polyoxyethylene moiety--(CH.sub.2 CH.sub.2 O).sub.q --CH.sub.2 CH.sub.2 --; each X is ethyl or preferably methyl; each n is from about 12 to about 45; q is from about 12 to about 90; the average value of u is from about 5 to about 20; the average value of v is from about 1 to about 10; the average value of u+v is from about 6 to about 30; the ratio u to v is from about 1 to about 6.

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patent: 4597898 (1986-07-01), Vander Meer
patent: 4664848 (1987-05-01), Oh et al.

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