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Alcohol ester-12 production process

A production process, alcohol ester technology, applied in the production process field of alcohol ester-12, can solve the problems of difficult control, long process flow, complicated process, etc., and achieve the effect of convenient operation, simple process and broad market prospect

Inactive Publication Date: 2018-02-16
ANHUI PROVINCE CHEM IND DESIGN INST
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  • Abstract
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Problems solved by technology

[0003] At present, there are few reports on the production process system for the production of alcohol ester-12. There is an introduction to the process of the similar product 2,2,4-trimethyl-1,3-pentanediol diisobutyrate (abbreviation: TXIB), but its process flow Long, complex process, difficult to control

Method used

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1 as shown,

[0033] A kind of production technology of alcohol ester-12, comprises the following steps:

[0034] A, a catalytic reaction

[0035] The one-stage catalytic reaction is polycondensation reaction, and the reaction equipment is a reactor. The process is as follows:

[0036] (1) Preparatory stage: Check the instruments on the first-stage reaction kettle (1) and the first-stage reaction circulation pump (2) to make them in good condition; open the jacket of the first-stage reaction kettle (1) and the first-stage reaction circulation cooler (3) Circulating water valve to circulate cooling water.

[0037] (2) the reaction process is that the dilute alkaline water sodium hydroxide of 5% by mass fraction enters one section of reactor (1) through the flow control of dilute alkali feed regulating valve (12) throu...

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Abstract

The invention discloses an alcohol ester-12 production process which includes the steps: condensing isobutyraldehyde under alkaline conditions to generate 2,2,4-trimethyl-3-hydroxyl-1-valeraldehyde; continuing to perform polycondensation reaction on the isobutyraldehyde and the 2,2,4-trimethyl-3-hydroxyl-1-valeraldehyde generated by reaction to generate the alcohol ester-12. The production processhas the advantages that the process is continuous and simple, convenient to operate, small in occupied area and leas in investment, and products prepared by the process are stable. The alcohol ester-12 prepared by the method is a dihydric alcohol ester solvent with high boiling point and poly-functional groups, a novel environmental-friendly green chemical and mainly used for special coalescing agents of waterborne architectural coatings, and the waterborne architectural coatings made of the coalescing agents cannot emit substances toxic for people into an atmospheric environment.

Description

technical field [0001] The invention relates to the field of film-forming aids, in particular to a production process of alcohol ester-12. Background technique [0002] Alcohol ester-12 (also known as: 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, or abbreviated: CS-12) is a high-boiling, polyfunctional diol Ester solvent, colorless and transparent liquid at room temperature, insoluble in water, boiling point 255°C. It is an environmentally friendly green chemical. It has become a special film-forming aid for water-based architectural coatings with environmental labels in foreign countries. The water-based architectural coatings made of this film-forming aid do not emit substances that are toxic to humans into the air space. Alcohol ester-12 is used as a green and environmentally friendly film-forming aid, mainly used in vinyl acetate homopolymerization and copolymerization emulsions, acrylate homopolymerization and copolymerization emulsions, vinyl acetate / acrylate copo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/44C07C69/28C09D7/63
CPCC07C45/72C07C67/44C08K5/103C07C69/28C07C47/19
Inventor 王奎刘兴然
Owner ANHUI PROVINCE CHEM IND DESIGN INST
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