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US 6,143,830 AGranted
Emulsifier composition comprising ethylene oxide/propylene oxide block copolymers and amine-containing ethylene oxide/propylene oxide block copolymers
AssigneeBASF SE
InventorsChristopher G. Utz, Johnny M. Sekmistrz
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Abstract
There is provided an emulsifier composition comprising (a) a blend consisting essentially of a polyoxyethylene (EO)/polyoxypropylene (PO) block copolymer which contains 10-40% EO, and where the molecular weight of the PO hydrophobe is about 500-6000; anionic surfactants; and a solvent; (b) a blend consisting essentially of a polyoxyethylene (EO)/polyoxypropylene (PO) block copolymer which contains 50-80% EO, and where the molecular weight of the PO hydrophobe is about 500-6000; anionic surfactants; and a solvent; and (c) a butyl ether of an EO/PO block copolymer.
Claims11
An emulsifier composition comprising:
- (a) 1-90% of a blend consisting essentially of:
- (i) a polyoxyethylene (EO)/polyoxypropylene (PO) block copolymers selected from the group of compounds represented by Formula I, II or III or mixtures thereof:
- ##STR8## wherein Formula I, II and III all contain 10-40% EO, n has a value such that the molecular weight of the PO is about 1200-4000 for Formula I, 1500-4000 for Formula II and 500-6000 for Formula III;
- (ii) anionic surfactants;
- (iii) a solvent;
- and
- (b) 1-90% of a blend consisting essentially of:
- (i) a polyoxyethylene (EO)/polyoxypropylene (PO) block copolymer selected from the group of compounds represented by Formula I, II or III or mixtures thereof:
- ##STR9## wherein Formula I, II and III all contain 50-80% EO, n has a value such that the molecular weight of the PO is about 1200-4000 for Formula I, 1500-4000 for Formula II and 500-6000 for Formula III;
- (ii) anionic surfactants;
- (iii) a solvent;
- and
- (c) 10-50% butyl ether of an EO/PO block copolymer.
10 more elements
Dependencies are inferred from the claim text.