Surfactant, process for producing the same, and detergent composition

A surfactant and adduct technology, applied in the field of anionic surfactant and a detergent composition, can solve the problems of poor appearance, low catalytic activity, high aldehyde content, etc.

Inactive Publication Date: 2001-10-31
SANYO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is still not used industrially, because the catalytic activity of the catalyst is low, and when its amount is increased to shorten the reaction time, many problems will occur, such as the obtained product will be obviously discolored, the appearance is very poor, and the product's High in aldehydes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0210] In a stainless steel autoclave with stirring and temperature control functions, add 186 parts (1 mole) of lauryl alcohol, 0.05 parts of magnesium perchlorate and 0.01 part of magnesium sulfate heptahydrate; after replacing the atmosphere in the container with nitrogen, in Dehydrate under reduced pressure (about 20mmHg) for 1 hour at 120°C. Then at 150°C at a gauge pressure of 1-3kgf / cm 2 Under these conditions 88 parts (2 moles) of EO were introduced. The Weibull distribution constant c' of the obtained adduct was 0.42, and the amount of unreacted alcohol was 2.2% (0.032 mol). Add 0.3 parts of potassium hydroxide to this adduct, and then at 150°C at a gauge pressure of 1-3kgf / cm 2 220 parts (5 moles) of EO were introduced under conditions. Add 3 parts of "Kyowaad600" (an aluminum silicate type adsorbent manufactured by Kyowa Chemical Corp.) to this reaction product, adsorb the catalyst at 90°C, and then filter it to obtain the nonionic surface of the present inventio...

Embodiment 2

[0214] In the same manner as in Example 1, the difference is to use 0.04 part of magnesium perchlorate and 0.01 part of aluminum perchlorate nonahydrate to replace 0.05 part of magnesium perchlorate (the distribution constant c ' of the adduct obtained is 0.38, The amount of unreacted alcohol was 1.7%), and 352 parts (8 moles) of EO was used instead of adding 220 parts of EO in the presence of a base catalyst to obtain the nonionic surfactant (B-2) of the present invention.

Embodiment 3

[0216] In the same manner as in Example 1, the difference is that barium sulfate is used instead of magnesium sulfate heptahydrate (the distribution constant c' of the resulting adduct is 0.32, and the amount of unreacted alcohol is 1.1%), and in the presence of an alkali catalyst Under the conditions, 618 parts (14 moles) of EO were used instead of adding 220 parts of EO to obtain the nonionic surfactant (B-3) of the present invention.

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Abstract

A nonionic surfactant which is directly produced by causing an aliphatic alcohol (a1) to add an alkylene oxide (b1), is represented by the general formula R<1>O-[(C2H4O)m / (AO)n]-(C2H4O)p-H, and has a value of Mw / Mn in a specific range, and in which the distribution constant c determined using the following equation derived from the Weibull distribution law is 1.0 or smaller. c=(v+n0 / n00-1) / [Ln(n00 / n0)+n0 / n00-1] (4) (In the equation (4), v is the average of (m+n+p) in the above general formula; n00 is the number of moles of the aliphatic alcohol (a1) used in the reaction; and n0 is the number of moles of the aliphatic alcohol (a1) remaining unreacted.) Due to the specific composition and the specific molecular weight, the surfactant is comparable in surface activity to nonionic surfactants of the alkylphenol type and has no fear of generating an endocrine disruptor. A surfactant obtained by making the nonionic surfactant anionic is improved in foaming property and reduced in odor and skin irritation and hence gives an excellent detergent composition.

Description

field of invention [0001] The present invention relates to a novel nonionic surfactant, an anionic surfactant produced by anionizing the same, and a detergent composition. More particularly, the present invention relates to non-ionic and anionic surfactants of the non-alkylphenol type. Background technique [0002] So far, there have been some aliphatic alcohol oxyalkylene adducts obtained by polyaddition reaction of alkylene oxide and aliphatic alcohol in the presence of a basic catalyst or an acidic catalyst and its anionized product as a variety of chemicals. Surfactants, solvents and intermediates. However, the hitherto known aliphatic alcohol oxyalkylene adducts in some cases have insufficient surface activity compared to alkylphenol-based nonionic surfactants, such as In the case of an emulsifier, the emulsifying properties and emulsion stability were not sufficient, and the foaming properties were also poor. As for the anionized products of aliphatic alcohol oxyalk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/11C08G65/26C08G65/28C09K23/00C09K23/42C11D1/72C11D1/722
CPCC07C43/11B01F17/0028C08G65/2609C11D1/722C11D1/72C11D1/29C11D1/94C09K23/00C09K23/42
Inventor 山下圣二松冈正弘永井邦夫太田笃志
Owner SANYO CHEM IND LTD
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