Unlock instant, AI-driven research and patent intelligence for your innovation.

Synthetic process of tributyl citrate plasticizer

A technology of tributyl citrate and synthesis process, which is applied to the preparation of carboxylic acid esters, the preparation of organic compounds, chemical instruments and methods, etc., and can solve problems such as many side reactions, environmental pollution by equipment and residual liquid, and deep color of products , to achieve the effect of low cost, good reusability and regeneration performance, and easy separation

Inactive Publication Date: 2017-07-07
江苏常州酞青新材料科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional production process uses concentrated sulfuric acid as a catalyst, and its disadvantages are many side reactions caused by oxidation, deep color of the product, strong corrosion of reaction equipment and residual liquid pollution of the environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Synthetic process of tributyl citrate plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] As shown in Figure 1, a synthesis process of tributyl citrate plasticizer, including the following steps:

[0015] (1) Esterification reaction: the reaction is carried out in a four-necked bottle with agitator, condenser, water separator, constant pressure dropping funnel and thermometer, and a temperature-controllable electric heater is used for heating; Add n-butanol and citric acid and heat to reflux state, and reflux for a period of time; in the reflux state, control the temperature of the reaction solution at about 120°C through the heating device; after continuous reaction for 4.5 hours, the acid value of the reaction solution basically does not change. cool down;

[0016] (2) Neutralize and wash with water: neutralize with 3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of fine chemical industry, in particular to a synthetic process of a tributyl citrate plasticizer. The synthetic process comprises the following steps: (1) esterification reaction; (2) neutralization and washing; (3) distillation; (4) de-coloring. The invention provides the synthetic process of the tributyl citrate plasticizer, and the tributyl citrate plasticizer is a non-toxic catalyst which is high in catalytic activity, less in corrosivity, easy to separate, good in reuse and regeneration performance and low in cost.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a synthesis process of a tributyl citrate plasticizer. Background technique [0002] Plasticizers are functional chemical products added to high molecular polymers to increase the plasticity of materials, make them easy to process, and endow products with softness. They are also the type of additives with the largest production capacity and consumption so far. It is widely used in a large number of durable and easy-to-shape plastic products such as toys, construction materials, auto parts, electronic and medical components. [0003] The traditional production process uses concentrated sulfuric acid as a catalyst, and its disadvantages are many side reactions caused by oxidation, dark product color, strong corrosion of reaction equipment and residual liquid pollution of the environment. In today's increasingly prominent environmental protection problems, it is necessary to improve t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C69/704
CPCC07C67/08C07C69/704
Inventor 陈晓洲
Owner 江苏常州酞青新材料科技有限公司