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Prepn process of high purity alkenyl succinic anhydride

A carbococtadecenyl succinic anhydride and high-purity technology, which is applied in the field of preparing alkenyl succinic anhydride by utilizing carbococtadecene, can solve the problems of unsatisfactory sizing agent quality, complex olefin ratio, difficult operation and the like, and achieves the The effect of simple product structure, high product purity and simple raw material ratio

Inactive Publication Date: 2005-04-27
魏素芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that the proportion of olefins is complicated, it is not easy to operate, and the quality of the product as a sizing agent is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 100 grams of mass percentage composition is 95% straight-chain α-carbon octadecenes to add in the reactor of band stirring and forced circulation, add 29.17 grams of maleic anhydrides by the mol ratio that olefins and maleic anhydride are 1.2: 1, stir Mix, heat to 220° C., react at constant temperature for 16 hours, and undergo two vacuum distillations at different pressures to obtain about 120 grams of the ASA product of the present invention.

Embodiment 2

[0018] Add 100 grams of straight-chain internal carbaoctacene with a mass percentage of 98% into the reactor, add 27 grams of maleic anhydride at a molar ratio of olefin to maleic anhydride of 1.1:1, stir and mix, and heat to 240°C , constant temperature reaction for 15 hours, and the high-purity ASA product of the present invention was obtained through two vacuum distillations at different pressures.

Embodiment 3

[0020] 100 grams of 93% linear α-carbon octadecene was added to the reactor, and 29.2 grams of maleic anhydride was added at a molar ratio of 1.0:1 between olefin and maleic anhydride, stirred and mixed, and then heated to 200 °C, constant temperature reaction for 17 hours, and two vacuum distillations at different pressures to obtain the high-purity ASA product of the present invention.

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PUM

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Abstract

The present invention is preparation process of high purity C18 alkenyl succinic anhydride. C18 olefin of purity over 90 % and maleic anhydride in the molar ratio of 1.0-1.2 as material are made to react at 180-250 deg.c temperature and 1.0-2.0 kg / sq cm pressure for 15-17 hr; and the reaction product is rectified to obtain high purity alkenyl succinic anhydride. The present invention has simple technological process, simple material composition, simple product structure and high product purity, and the product may be used in gluing paper with excellent effect.

Description

technical field [0001] The invention relates to a paper-making neutral sizing organic chemical raw material, in particular to a process for preparing alkenyl succinic anhydride by using carbooctadecene. technical background [0002] Alkenyl succinic anhydride (ASA) is a widely used light industrial fine chemical raw material. In the paper industry, as a neutral sizing agent, it can greatly improve the waterproof performance, tensile strength, abrasion resistance, whiteness, opacity and chemical environment of the paper making process. Generally, the process used to prepare ASA is isomerization with alpha olefins and then reacting with maleic anhydride to produce ASA. The raw materials used in this process are generally of low purity, so the productivity of the synthesized ASA is low, and the structure of ASA is complex, which is unfavorable for subsequent processes. In view of this problem, Chinese patent CN1393437 has improved it, adopts the mixture of carbon thirteen, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/567C07C57/13
Inventor 魏素芬
Owner 魏素芬
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