Succinic anhydride and its preparation method

A technology for succinic anhydride and maleic anhydride, applied in the field of succinic anhydride and its production, can solve the problems of crystallization, impure component content and high production cost, and achieve the effects of simple production method, pure component content and low production cost

Inactive Publication Date: 2006-04-26
葛勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, although there are manufacturers of succinic anhydride, most of them have many materials, complicated production methods, high production costs, impure ingredients, and unattractive colors; most of them are non-flaky, slow melting, and difficult to store. Easy to agglomerate and crystallize, which is the defect of the prior art

Method used

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  • Succinic anhydride and its preparation method

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Embodiment Construction

[0030] Below are embodiments of the present invention:

[0031] The weight parts of its raw material of A have pure benzene 148, maleic anhydride 500, catalyst 70 and hydrogen 70.

[0032] The parts by weight of raw materials of B: pure benzene 152, maleic anhydride 550, catalyst 85 and hydrogen 80.

[0033] The parts by weight of its raw materials are: pure benzene 155, maleic anhydride 600, catalyst 100 and hydrogen 90.

[0034] The parts by weight of D catalyst raw materials are: alloy powder 8, caustic soda 16 and distilled water 64.

[0035] Production method of the present invention is the same as above.

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Abstract

The present invention prepares succinic anhydride with material including pure benzene, cis-butenedioic anhydride, catalyst and hydrogen. The preparing process features the flake product with fast dissolving, and less caking and crystallizing. The present invention has the advantages of less material consumption, simple preparing process, low cost, high product purity and bright color, and the product may be used in producing pesticide, plant growth regulator and medicines and as brightener for paper and paint production.

Description

(1) Technical field: [0001] The invention relates to an intermediate product of a chemical product and a production method thereof, in particular to a succinic anhydride and a production method thereof. (two), background technology: [0002] At present, although there are manufacturers of succinic anhydride, most of them have many materials, complicated production methods, high production costs, impure ingredients, and unattractive colors; most of them are non-flaky, slow melting, and difficult to store. It is easy to agglomerate and crystallize, which is a defect of the prior art. (3) Contents of the invention: [0003] The purpose of the present invention is to invent a kind of succinic anhydride and preparation method thereof, this succinic anhydride and preparation method thereof, materials are few, and preparation method is simple, and production cost is low, and component content is pure, and color is attractive in appearance, and is flake, The melting speed is fast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/60
Inventor 葛勇
Owner 葛勇
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