Capped 1,2-propylene terephthalate-polyoxyethylene terephthalate polyesters useful as soil release agents
AssigneeThe Procter & Gamble Company
InventorsEugene P. Gosselink, Francis L. Diehl
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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.
Claims33
A capped, substituted-ethylene terephthalate ester compound having oligomeric or polymeric backbone incorporating particular polyoxyethylene moieties, said compound having the formula:
- X--(OCH.sub.2 CH(Y)).sub.n (OR.sup.4).sub.m ][(A--R.sup.1 --A--R.sup.2).sub.u (A--R.sup.1 --A--R.sup.3).sub.v ]
- --A--R.sup.1 --A--(R.sup.4 O).sub.m (CH(Y)CH.sub.2 O).sub.n ]X
- wherein the A moieties are selected from the group consisting of ##STR32## and combinations thereof with either or both of the moieties ##STR33## the R.sup.1 moieties are selected from 1,4-phenylene moieties and combinations thereof with up to 50% of other arylene or alkarylene moieties, alkylene moieties, alkenylene moieties or mixtures thereof;
- the R.sup.2 moieties are selected from (a) the group consisting of 1,2-propylene, 1,2-butylene, 3-methoxy-1,2-propylene and combinations thereof, and (b) combinations of the foregoing R.sup.2 moieties with up to 20% of other compatible R.sup.2 moieties;
- the R.sup.3 moieties are selected from moieties (CH.sub.2 CH.sub.2 O).sub.q --CH.sub.2 CH.sub.2 -- wherein q is at least about 9, and from combinations thereof with up to 50% of other compatible R.sup.3 moieties;
- each R.sup.4 is C.sub.3 -C.sub.4 alkylene, or the moiety --R.sup.2 --A--R.sup.5 --, wherein R.sup.5 is a C.sub.1 -C.sub.12 alkylene, alkenylene, arylene or alkarylene moiety;
- the Y substituents of each moiety --(R.sup.4 O).sub.m (CH(Y)CH.sub.2 O).sub.n ] are H, the ether moiety --CH.sub. 2 (OCH.sub.2 CH.sub.2).sub.p O--X or a mixture of said ether moiety and H;
- each X is H, C.sub.1 -C.sub.4 alkyl or ##STR34## wherein R.sup.6 is C.sub.1 -C.sub.4 alkyl;
- m and n are numbers such that the moiety --(CH(Y)CH.sub.2 O)-- comprises at least about 50% by weight of the moiety --(R.sup.5 O).sub.m (CH(Y)CH.sub.2 O).sub.n --, provided that when R.sup.4 is the moiety --R.sup.2 --A--R.sup.5 --, m is 1;
- each n is at least about 6;
- p is 0 or at least 1;
- the average value of u is from about 2 to about 50;
- the average value of v is from about 1 to about 20;
- the average value of u+v is from about 3 to about 70.
A capped, 1,2-propylene terephthalate ester compound having oligomeric or polymeric backbone incorporating polyoxyethylene moieties, said compound having the formula:
- ##STR40## wherein each R.sup.1 is a 1,4-phenylene moiety;
- the R.sup.2 moieties are 1,2-propylene moieties;
- the R.sup.3 moieties are the polyoxyethylene moieties --(CH.sub.2 CH.sub.2 O).sub.q --CH.sub.2 CH.sub.2 --;
- each X is ethyl or 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.
Dependencies are inferred from the claim text.