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Dishwashing detergent composition containing mixtures of crystallinity-disrupted surfactants

A technology of surfactant and composition, applied in the field of dishwashing compositions, can solve the problems of lack of degreasing and hard food cleaning, difficulty in preparing dishwashing detergent, poor low temperature stability, etc., and achieves improved production ease and excellent hardness. The effect of improving the resistance and the removal of grease stains

Inactive Publication Date: 2002-07-31
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the presence of divalent ions in products containing anionic, nonionic or other surfactants (e.g. amine oxides, alkyl ethoxylates, LAS, alkanoyl glucamides, alkyl betaines) makes the product incompatible with water Slower mixing (hence poorer flash lather), poorer rinsing, and poor low temperature stability
Also, as the pH decreases, it is difficult to prepare stable dishwashing detergents containing Ca / Mg due to precipitation problems associated with Ca and Mg
Therefore, there is a need for a detergent composition suitable for hand dishwashing, which is stable at low temperatures, and which in addition can have the advantages of degreasing and cleaning hard foods in hard water and typically at a pH of 9 or lower, while conventional Ca / Mg The system will be unstable and will not have the benefits of degreasing and cleaning tough foods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] prepared by skeletal isomerization of linear olefins

[0057] Crystallinity disrupted surfactant system step (a): at least partially reducing the linearity of olefins (by skeletal isomerization of preformed olefins to chain lengths suitable for cleaning product stain removal)

[0058] A mixture of 1-decene, 1-undecene, 1-dodecene and 1-tridecene (available for example from Chevron) in a weight ratio of 1:2:2:1 at 220°C and at any Suitable LHSV such as 1.0 is passed over a Pt-SAPO catalyst. The catalyst was prepared in the manner of the example of US 5,082,956. See WO95 / 21225, for example, Example 1 and description thereof. The product is a skeletally isomerized lightly branched olefin having a chain length suitable for the preparation of alkylbenzene sulfonate surfactants for consumer mix cleaning compositions. More typical temperatures for this step may range from about 200°C to about 400°C, preferably from about 230°C to about 320°C. Th...

Embodiment 2

[0063] prepared from linear olefins by skeletal isomerization

[0064] Surfactant systems with crystallization disruption

[0065] The procedure of Example 1 was repeated except that sulfur trioxide (without dichloromethane solvent) was used as the sulfonating agent in the sulfonation step (c). Details of sulfonation using a suitable air / sulfur trioxide mixture are given in US 3,427,342 to Chemithon. Also, step (d) uses sodium hydroxide instead of sodium methoxide for neutralization.

Embodiment 3

[0067] prepared by skeletal isomerization of linear olefins

[0068] Crystallinity disrupted surfactant system step (a): at least partially reducing the linearity of the olefin

[0069] A mixture of C11, C12 and C13 monoolefins was passed over the H-ferrierite catalyst in a weight ratio of 1:3:1 at 430°C. The method and catalyst in US5,510,306 can be used for this step. Boiling volatiles were distilled off at up to 40°C / 10mmHg. Step (b): Alkylation of the product of step (a) with an aromatic hydrocarbon

[0070] In a glass autoclave sleeve, add the slightly branched olefin mixture of 1 molar equivalent step (a), the benzene of 20 molar equivalents and the shape-selective zeolite catalyst (acidic mordenite catalyst Zeocat TM FM-8 / 25H). The glass thimble was enclosed in a stainless steel shaker autoclave. With 250 psig N 2 The autoclave was purged twice, then 1000 psig N 2 . The mixture was heated to 170-190° C. with stirring overnight...

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Abstract

A hand dishwashing compositions comprising; a) about 0.1% to about 99.9% by weight of said composition of an alkylarylsulfonate surfactant system comprising from about 10% to about 100% by weight of said surfactant system of two or more crystallinity-disrupted alkylarylsulfonate surfactants of formula (B-Ar-D)a(M)b wherein D is SO3<->, M is a cation or cation mixture, q is the valence of said cation, a and b are numbers selected such that said composition is electroneutral; Ar is selected from benzene, toluene, and combinations thereof; and B comprises the sum of at least one primary hydrocarbyl moiety containing from 5 to 20 carbon atoms and one or more crystallinity-disrupting moieties, wherein said crystallinity-disrupting moieties interrupt or branch from said hydrocarbyl moiety; and wherein said alkylarylsulfonate surfactant system has crystallinity disruption to the extent that its sodium critical solubility temperature, as measured by the CST Test, is no more than about 40 DEG C; and wherein further said alkylarylsulfonate surfactant system has at least one of the following properties: percentage biodegradation, as measured by the modified SCAS test, that exceeds tetrapropylene benzene sulfonate; and weight ratio of nonquaternary to quaternary carbon atoms in B of at least about 5:1; and b) from about 0.00001% to about 99.9% by weight of said composition of a conventional hand dishwashing adjunct; c) from about 0.01% to about 7% by weight of composition of a divalent ion selected from the group consisting of magnesium, calcium and mixtures thereof.

Description

field of invention [0001] The present invention relates to dishwashing compositions comprising an alkylarylsulfonate surfactant system comprising a mixture of isomers of a crystallinity disrupted, preferably branched, alkylarylsulfonate surfactant and optionally one or more undisrupted crystallinity alkylaryl sulfonate surfactants. Background of the invention [0002] Typical commercial hand dishwashing compositions incorporate divalent ions (Mg, Ca) to ensure suitable grease properties in soft water. However, the presence of divalent ions in products containing anionic, nonionic or other surfactants (e.g. amine oxides, alkyl ethoxylates, LAS, alkanoyl glucamides, alkyl betaines) makes the product incompatible with water The speed of mixing is reduced (hence poor flash lather), the rinse is poor, and the low temperature stability is poor. Also, as the pH decreases, it is difficult to prepare stable dishwashing detergents containing Ca / Mg due to prec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/06C11D1/10C11D1/14C11D1/18C11D1/22C11D1/28C11D1/29C11D1/52C11D1/68C11D1/72C11D1/75C11D1/90C11D1/92C11D3/02C11D3/30C11D3/37C11D3/386C11D17/04C11D17/06C11D17/08
CPCC11D1/22C11D3/0084C11D3/046C11D1/75C11D3/38618C11D3/38627C11D3/044C11D3/30
Inventor J·J·谢贝尔K·L·科特D·S·康诺T·A·克里佩P·K·温森W·M·谢赫珀C·卡斯图里J·C·T·R·布尔凯特－圣劳伦特
Owner THE PROCTER & GAMBLE COMPANY
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