Detergent composition

A technology of composition and cleaning agent, which is applied in the direction of detergent composition, surface active detergent composition, bleaching agent of washing composition, etc., which can solve the problems of reduced cleaning power, device failure, foam overflow, etc., and achieve high cleaning power Effect

Inactive Publication Date: 2017-10-20
NIITAKA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As detergent compositions for automatic dishwashers, compositions containing surfactants are often used. When washing with automatic dishwashers, if a large amount of bubbles are generated, the bubbles overflow and cause malfunctions of the device, etc.
In addition, the cleaning power may decrease due to the generation of bubbles

Method used

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  • Detergent composition
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Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0178] (Manufacture example 1) Manufacture of (A-1)

[0179] As a nonionic surfactant, a polyoxyalkylene alkyl ether having 1 to 400 oxyalkylene groups and having a hydroxyl group at the end of the oxyalkylene group (manufactured by ADEKA Corporation, ADEKANOLB722) (140 g) 20 g of dihydropyran (DHP) and 1 mol% p-toluenesulfonic acid as a catalyst were added to a dichloromethane solution (50 ml) of , and stirred overnight (10 hours) at room temperature. Sodium bicarbonate was added to complete the reaction, and after filtration, the solvent was distilled off to obtain the target product.

[0180] The obtained product is the nonionic surfactant (A-1) which the terminal hydroxyl group of the said nonionic surfactant reacted with DHP, and which has an acetal structure at the terminal.

manufacture example 2

[0181] (Manufacture example 2) Manufacture of (A-2)

[0182] As a nonionic surfactant, polyoxyalkylene alkyl ethers (manufactured by ADEKA Co., Ltd., ADEKANOLBO-922) ( 110 g) of dichloromethane solution (50 ml) were added with 18 g of ethyl vinyl ether and 1 mol% p-toluenesulfonic acid as a catalyst, and stirred at room temperature overnight (10 hours). Sodium bicarbonate was added to complete the reaction, and after filtration, the solvent was distilled off to obtain the target product.

[0183] The obtained product is the nonionic surfactant (A-2) which the terminal hydroxyl group of the said nonionic surfactant reacted with ethyl vinyl ether, and which has an acetal structure at the terminal.

manufacture example 3

[0184] (Manufacture example 3) Manufacture of (A-3)

[0185] As a nonionic surfactant, a polyoxyalkylene alkyl ether (manufactured by ADEKA Corporation, ADEKANOLB-2020) having an oxyalkylene group in the range of 1 to 400 and having a hydroxyl group at the end of the oxyalkylene group ( 17 g of 2,3-dihydrofuran and 1 mol% p-toluenesulfonic acid as a catalyst were added to a dichloromethane solution (50 ml) of 300 g) and stirred at room temperature overnight (10 hours). Sodium bicarbonate was added to complete the reaction, and after filtration, the solvent was distilled off to obtain the target product.

[0186] The obtained product is the nonionic surfactant (A-3) which reacted the terminal hydroxyl group of the said nonionic surfactant, and 2, 3- dihydrofuran, and has an acetal structure in the terminal.

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PUM

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Abstract

The purpose of the present invention is to provide a detergent composition that has low-foam properties, characterised in that the detergent composition comprises components (A)-(B) and has a pH greater than 12. (A) is a non-ionic surfactant having a structure represented by general formula (1) at the terminal thereof, and (B) is an alkaline agent. In the formula, R1 is a hydrogen atom or an alkyl group, R2 and R3 are a hydrocarbon group that may include an ether bond, R2 and R3 may form a ring, AO are oxyalkylene groups that are either the same or different, and n is an integer 1-400.

Description

[0001] This application is a divisional application of an application with a filing date of 2013.11.08, an application number of 201380058521.6, and an invention title of "cleaning agent composition". technical field [0002] The present invention relates to cleaning compositions. Background technique [0003] As detergent compositions for automatic dishwashers, compositions containing surfactants are often used. When washing with automatic dishwashers, if a large amount of bubbles are generated, the bubbles overflow and cause malfunctions of the device. In addition, the cleaning power may decrease due to generation of bubbles. [0004] Therefore, low foaming properties are required for cleaning compositions for automatic dishwashers. [0005] In order to suppress generation of foam, there is known a method of blending a silicone-based antifoaming agent described in Patent Document 1. [0006] In addition, it is also known that a Pluronic type surfactant, which is a type o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D309/10C07C43/315C11D1/72C11D1/722C11D3/04C11D3/08C11D3/28C11D3/395C11D3/60C08G65/331C08L71/02
CPCC07C43/315C07D309/10C08G65/331C08L71/02C08L2205/025C11D1/008C11D1/72C11D1/721C11D1/722C11D3/044C11D3/046C11D3/08C11D3/28C11D3/3951C11D3/3953C08L2205/02
Inventor 森田将基伊藤纱菜黑瀬健曼多拉·里唐伽朝日薫
Owner NIITAKA
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