A kind of double cationic bleach activator and its synthesis method and application

A bleaching activator and dicationic technology, which is applied in the field of dicationic bleaching activator and its synthesis, can solve the problem that there is no dicationic bleaching activator, etc., and achieve the effect of good bleaching effect

Active Publication Date: 2016-09-07
QINGDAO FRONTIERCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the prior art, there is no practical double cationic bleach activator

Method used

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  • A kind of double cationic bleach activator and its synthesis method and application
  • A kind of double cationic bleach activator and its synthesis method and application
  • A kind of double cationic bleach activator and its synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Synthesis of 4-chloromethylbenzoyl valerolactam

[0033] Add 0.1 mol of valerolactam into a 500 mL three-neck flask filled with 0.15 mol of triethylamine and 110 mL of toluene, and after being protected by argon, slowly heat to boiling and reflux under magnetic stirring. Slowly add 50 mL of toluene solution dissolved with 0.1 mole of 4-chloromethylbenzoyl chloride into a three-necked flask, condense and reflux for 6 hours under magnetic stirring. After the reaction is complete, cool to room temperature. After filtration, the filtrate was refrigerated overnight. The precipitated white precipitate was filtered off, washed with cold toluene and dried in vacuum for use.

[0034] 2. N-[4-(triethylammoniummethylene)benzoyl]caprolactam chloride

[0035] Dissolve 0.1 mole of 4-chloromethylbenzoyl valerolactam in 150mL of acetonitrile, under the protection of argon, slowly heat to boiling under magnetic stirring and reflux, then dissolve 50mL of acetonitrile solution with ...

Embodiment 2

[0037] This embodiment provides a kind of synthetic method of double cationic bleach activator, and concrete steps are as follows:

[0038] 1. Synthesis of 4-chloromethylbenzoyl valerolactam

[0039] Add 0.1 mol of valerolactam into a 500 mL three-neck flask filled with 0.15 mol of triethylamine and 110 mL of toluene, and after being protected by argon, slowly heat to boiling and reflux under magnetic stirring. Slowly add 50 mL of toluene solution dissolved with 0.1 mole of 4-chloromethylbenzoyl chloride into a three-necked flask, condense and reflux for 6 hours under magnetic stirring. After the reaction is complete, cool to room temperature. After filtration, the filtrate was refrigerated overnight. The precipitated white precipitate was filtered off, washed with cold toluene and dried in vacuum for use.

[0040] 2. Dichloro-N,N'-bis(4-benzoylvalerolactammethylene)triethylene diammonium

[0041] Dissolve 0.1 mole of 4-chloromethylbenzoyl valerolactam in 150 mL of acetoni...

Embodiment 3

[0043] This embodiment provides another synthetic method of dicationic bleach activator, the specific steps are as follows:

[0044] 1. Synthesis of 4-chloromethylbenzoyl caprolactam

[0045] Add 0.1 mol of caprolactam into a 500 mL three-necked flask filled with 0.15 mol of triethylamine and 110 mL of toluene, and after being protected by argon, slowly heat to boiling and reflux under magnetic stirring. Slowly add 50 mL of toluene solution dissolved with 0.1 mole of 4-chloromethylbenzoyl chloride into a three-necked flask, condense and reflux for 6 hours under magnetic stirring. After the reaction is complete, cool to room temperature. After filtration, the filtrate was refrigerated overnight. The precipitated white precipitate was filtered off, washed with cold toluene and dried in vacuum for use.

[0046] 2. Dichloro-N,N'-bis(4-benzoylcaprolactammethylene)triethylene diammonium

[0047] Dissolve 0.1 mole of 4-chloromethylbenzoyl valerolactam in 150 mL of acetonitrile, and...

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Abstract

The invention discloses a dicationic bleaching activator and a synthesis method and application thereof and belongs to the field of fine chemicals. The active component of the dicationic bleaching activator provided by the invention is dichloride-N, N'-bis (4-benzoyl lactam methylene) triethylenediamine, and the structural formula is shown in the specification, wherein n is 1, 2, 3, 4 or 5. The dicationic bleaching activator provided by the invention is synthesized by synthesizing 4-chloromethyl benzoyl lactam by taking 4-chloromethyl benzoyl chloride and lactam as reaction substrates and enabling 4-chloromethyl benzoyl lactam to react with triethylenediamine. The bleaching effect of the bleaching activator provided by the invention is obviously better than that of a single cationic bleaching activator. According to the preparation method provided by the invention, the total yield of two-step reaction products can achieve 90%.

Description

technical field [0001] The invention relates to a dicationic bleach activator, a synthesis method and application thereof, and belongs to the field of fine chemicals. Background technique [0002] Hydrogen peroxide is a bleaching agent widely used in industry. In the traditional hydrogen peroxide bleaching process, hydrogen peroxide usually works under the conditions of strong alkali (pH11-12, adding sodium hydroxide or sodium carbonate) and high temperature (close to 100°C), which will not only cause huge energy consumption, but also It will also increase the burden of factory wastewater treatment; in addition, it will also cause serious damage to the substrate to be bleached (for example: cotton fiber). [0003] Bleach activators are the precursors of organic peroxyacids, which can react with hydrogen peroxide in aqueous solution to produce peroxyacids. Compared with hydrogen peroxide, peroxyacid has higher activity and can effectively remove colored impurities at low te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D453/02C11D3/395C11D7/54D06L3/00D06L4/12D06L4/13
CPCC07D453/02C11D3/3927C11D7/3281D06L4/12
Inventor 许长海孙昌杜金梅任长靖唐文娟陈文华罗雄方
Owner QINGDAO FRONTIERCHEM
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