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US 5,182,043 AGranted
Sulfobenzoyl end-capped ester oligomers useful as soil release agents in granular detergent compositions
AssigneeThe Procter & Gamble Company
InventorsStephen W. Morrall, Eugene P. Gosselink, Robert Y. Pan, Bala C. Nayar
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Abstract
Anionic, sulfobenzoyl end-capped esters useful as soil release agents in granular detergent compositions. The terephthalate esters contain oxyethyleneoxy and oxy-1,2-propyleneoxy units, and are substantially amorphous in form.
Claims21
An oligomeric or polymeric composition comprising a substantially linear, sulfobenzoyl end-capped ester;
- said ester comprising, per mole of said ester:
- i) from about 1 to about 2 moles of sulfobenzoyl end-capping units of the formula (MO.sub.3 S)(C.sub.6 H.sub.4)C(O)-- wherein M is sodium;
- ii) from about 2 to about 10 moles of oxyethyleneoxy units and oxy-1,2-propyleneoxy units in a mole ratio of oxyethyleneoxy units to oxy-1,2-propyleneoxy units of from about 2.5:1 to about 15:1;
- and
- iii) from about 1 to about 9 moles of terephthaloyl units;
- wherein the mole ratio of said oxyalkyleneoxy units to said terephthaloyl units is from about 2:1 to about 1.1:1;
- and wherein said ester is substantially amorphous in form.
4 more elements
Dependencies are inferred from the claim text.