Lever Brothers Company, Division of Conopco, Inc.

Lever Brothers, Division of Conopco, Inc.

Wilfried Blokzijl

Andrew Martin Creeth

Andrew David Green

Michael Hull

Reginald Vear Scowen

Mohamad Sami Falou

Ezat Khoshdel

Alfred R Elmes

Norah Lynn

Katrin Dagmar Joule

A laundry detergent composition contains a surfactant system consisting wholly of anionic surfactant, or of anionic and nonionic surfactants in a ratio at least 0.9:1, a detergency builder, and a soil release polymer which is a defined water-soluble or water-dispersible sulphonated non-end-capped polyester, for example, of terephthalic acid, isophthalic acid, sulphoisophthalic acid and ethylene glycol.

Detergent compositions containing soil release polymers

A non-bleaching laundry detergent composition suitable for washing delicate fabrics, having a 1 wt % aqueous solution pH in demineralised water at 25.degree. C. not exceeding 10, contains surfactant, detergency builder, and a soil release polymer which is a defined water-soluble or water-dispersible sulphonated non-end-capped polyester, for example, of terephthalic acid, isophthalic acid, sulphoisophthalic acid and ethylene glycol.

A laundry detergent composition contains organic surfactant, zeolite MAP builder, and a soil release polymer which is a defined water-soluble or water-dispersible sulphonated non-end-capped polyester, for example, of terephthalic acid, isophthalic acid, sulphoisophthalic acid and ethylene glycol.

A water-soluble copolyester comprising units of a polyglycol or capped polyglycol (for example, polyethylene glycol or polyethylene glycol methyl ether), an aromatic dicarboxylic acid (for example, terephthalic acid) and at least 30 mole % of a polyol having at least three hydroxyl groups (for example, glycerol), but free of ethylene glycol units, is a highly effective soil release polymer for use in detergent compositions. The aromatic dicarboxylic acid units may include units of a sulphonated aromatic dicarboxylic acid (for example, sulphoisophthalic acid).

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Amsterdam, Netherlands

Wilfried Blokzijl