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Detergent compositions containing modified alkylaryl sulfonate surfactants

A technique for modification of alkylbenzene sulfonate, applied in surface-active detergent compositions, detergent compositions, non-ionic surface-active compounds, etc.

Inactive Publication Date: 2008-09-03
PROCTER & GAMBLE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although removal of paraffins is desirable prior to entering the alkylation zone, the difficulty of separating these paraffins from all mono-olefins of the same carbon number precludes this process

Method used

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  • Detergent compositions containing modified alkylaryl sulfonate surfactants
  • Detergent compositions containing modified alkylaryl sulfonate surfactants
  • Detergent compositions containing modified alkylaryl sulfonate surfactants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0156] The catalyst used in Example 1 was prepared by coextrusion of 0.39 wt% platinum on a support containing extrudates of 60 wt% SAPO-11 and 40 wt% alumina. During the isomerization, the conversion was 73.4 mol%, the monomethyl selectivity was 55.5 mol%, the light yield was 7.9 mol%, and the heavy yield was 0.01 mol%.

Embodiment 2

[0158]The catalyst used in Example 2 was prepared by impregnating 0.26 wt% platinum with 50 wt% MgAPSO-31 and 50 wt% alumina. During the isomerization, the conversion was 73.3 mol%, the monomethyl selectivity was 69.6 mol%, the light yield was 13.5 mol%, and the heavy yield was less than 0.01 mol%.

[0159] Examples 1 and 2 show that good conversion and high selectivity to monomethyl paraffins can be obtained with isomerization catalysts containing SAPO-11 and MgAPSO-31.

Embodiment 3

[0162] Example 3 illustrates a preferred dehydrogenation catalyst for use in the present invention and a method of preparing the catalyst. Alumina spheres were prepared by the known oil drop method described in US2620314, incorporated herein by reference. The method involves forming an aluminum hydrosol by dissolving aluminum metal in hydrochloric acid; adding hexamethylenetetramine to the sol, which gels when dispersed as droplets in an oil bath maintained at about 93°C (199°F) for the sphere. The droplets are kept in the oil bath until they coagulate and form hydrogel spheres. The spheres were then successively removed from the hot oil bath, followed by pressure aging at 135°C (275°F) and washing with dilute ammonium hydroxide solution, drying at 110°C (230°F), and then drying at about 650°C (1202°F) sintering for about 2 hours to obtain gamma-alumina balls. The resulting sintered alumina was crushed into a fine powder with a particle size of less than 200 microns (0.0078...

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Abstract

The present invention is directed to detergent compositions, comprising aryl-alkane sulfonate produced by paraffin isometization followed by paraffin dehydrogenation, then by alkylation of an aryl compound by a lightly branched olefin, then by sulfonating, and finally optionally, neutralizing. The effluent of the alkylation zone comprises paraffins that are recycled to the isomerization step or to the dehydrogenation step. These modified alkylbenzene sulfonates produced have improved cleaning effectiveness in hard and / or cold water while also biodegradability comparable to that of linear alkylbenzene sulfonates.

Description

field of invention [0001] The present invention relates to cleaning compositions containing arylalkyl sulfonate compositions obtained by selectively producing arylalkanes and arylalkylsulfonates produced therefrom. Background of the invention [0002] More than three decades ago, many household laundry detergents were produced from branched-chain alkylbenzene sulfonates (BABS). BABS is produced from a class of alkylbenzenes known as branched alkylbenzenes (BAB). Alkylbenzenes (phenylalkanes) refer to a general class of compounds containing an aliphatic alkyl group bonded to a phenyl group, having the general formula (m i -alkyl i ) i -n-Phenylalkanes. The aliphatic alkyl group consists of aliphatic alkyl chains, which in the formula (m i -alkyl i ) i -n-Phenylalkanes are referred to as "alkanes". Among these aliphatic alkyl chains, the aliphatic alkyl chain is the longest straight chain containing a carbon bonded to a phenyl group. An aliphatic alkyl group may also ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/31C11D1/22A61K8/00A61K8/41A61K8/46A61K8/66A61K8/73A61Q5/02C07B61/00C07C303/04C11D1/65C11D1/83C11D1/86C11D1/94
CPCC11D1/22C11D1/65C11D1/86C11D1/83C11D1/94
Inventor K·L·科特J·J·谢贝尔R·G·塞维尔森T·A·克里佩J·C·T·R·布尔凯特-圣劳伦特
Owner PROCTER & GAMBLE CO
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