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Detergent compsn. comprising soil release agents

A technology of composition and detergent, applied in the direction of detergent composition, organic cleaning composition, detergent compounding agent, etc., can solve the problems of expensive synthesis, increased cost, and loss of luster of fabrics

Inactive Publication Date: 2001-05-23
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In "thru-the-wash" mode, it is especially important that there are no formulation components, including detergents, that promote the redeposition of soil suspended in the wash liquor, which can cause the washed fabric to lose its luster
[0006] Another obstacle to the use of s.r.a.'s in detergent compositions is the increased cost of the product
The synthesis of s.r.a.'s with sulfonated aroyl endcaps is expensive, mainly due to the expensive starting materials for sulfonated aroyls

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0102] Sodium 2-[2-(2-hydroxyethoxy)-ethoxy]ethanesulfonate, dimethyl terephthalate, dimethyl 5-sulfoisophthalate sodium salt, ethylene glycol and propylene glycol Synthesis of oligomers - in a laboratory equipped with a magnetic stir bar, modified Claisen distillation head, condenser (for distillation), thermometer and temperature controller (Therm-O-Watch TM , I 2 In the 250ml three-neck round bottom flask of R), add 2-[2-(2-hydroxyethoxy) ethoxy] sodium ethanesulfonate (10.3g, 0.044mol, the same preparation as in Example I), terephthalic acid Dimethyl ester (Aldrich, 21.2g, 0.109mol), 5-sulfo-isophthalic acid dimethyl ester sodium salt (Aldrich, 6.5g, 0.022mol), ethylene glycol (Baker, 20.3g, 0.327mol), Propylene glycol (Baker, 23.2g, 0.305mol), hydrated monobutyltin oxide (M&T Chemicals, 0.16g, 0.2% of the total weight of reactants) and sodium acetate (MCB, 0.04g, 2mol% of 5-sulfo-isophthalic acid Dimethyl formate sodium salt). The mixture was heated to 180°C under an a...

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Abstract

Detergent compositions comprising anionic ethoxylated or propoxylated hydroxy ethane and propane sulfonate, NaO3SCH2CH2CH2-O(CH2CH2O)n- end-capped esters useful as soil release agents. The esters further contain terephthalate units, oxy-1,2-alkyleneoxy units (oxyethyleneoxy units preferred), and sulfoisophthalate units.

Description

technical field [0001] The present invention relates to laundry detergents containing anionic ester compositions as soil release ingredients. Background of the invention [0002] As is well known in the industry, a wide variety of stain release agents (s.r.a.'s) have been used in domestic fabric treatment processes such as laundry, drying fabrics in hot air clothes dryers, and the like. Currently, a wide variety of s.r.a.'s are commercially produced and used in detergent compositions and fabric softener / antistatic preparations and compositions. These s.r.a.'s generally comprise an oligoester "backbone" and one or more "capping" units. [0003] Although there are reports of nonionic s.r.a.'s in the literature, many s.r.a.'s of industrial importance are anionic. These anionic s.r.a.'s generally comprise an oligoester backbone which itself optionally contains various anionic substituents and is usually terminated by one or more capping units which are also anionic. For examp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/688C08L67/02C11D3/00C11D3/37C11D3/386C11D17/00
CPCC08G63/6886C11D3/0036C11D3/3715C11D3/38645C11D17/0069
Inventor E·P·戈塞林克R·Y·L·彭R·G·霍尔
Owner THE PROCTER & GAMBLE COMPANY