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Integrated process and apparatus for preparing esters of methacrylic acid from acetone and hydrocyanic acid

A technology of alkyl methacrylate and methacrylamide, which is applied in the field of preparing alkyl methacrylate and its subsequent products, and can solve problems such as expensive post-processing, waste of valuable raw materials, and tediousness

Inactive Publication Date: 2008-06-11
ROHM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these methods suffer from the fact that a large number of streams leave the process during the preparation process, necessitating tedious and often expensive work-up
This stream of material often has to be disposed of as waste, often resulting in additional costs
In addition to work-up costs or clean-up costs or both, known methods often bring about the problem that possible reaction participants are taken away from the method, thus in principle wasting valuable raw materials or making adjustments required for the method The stoichiometry of the

Method used

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  • Integrated process and apparatus for preparing esters of methacrylic acid from acetone and hydrocyanic acid
  • Integrated process and apparatus for preparing esters of methacrylic acid from acetone and hydrocyanic acid
  • Integrated process and apparatus for preparing esters of methacrylic acid from acetone and hydrocyanic acid

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Embodiment Construction

[0165] FIG. 1 shows preferred elements of a plant system 1 for the production of methacrylic acid or methacrylate esters and their further processing products. The device system 1 has, as elements of the system, various devices which are mostly fluidically connected to one another. The equipment system includes acetone cyanohydrin preparation 20, followed by acetone cyanohydrin treatment 30, followed by amidation 40, followed by esterification / hydrolysis 50 / 50a), followed by para-ester or methyl Acrylic acid treatment 60, followed by polishing 70, after which there are esters, mostly methyl methacrylate, or methacrylic acid. The resulting pure ester / acid can be passed to further processing unit 80 . As further processing equipment 80 in particular polymerization plants and reactors for other organic reactions come into consideration. In polymerization reactors polymethacrylates can be prepared and in reactors for organic reactions the pure monomers obtained here can be react...

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Abstract

The subject-matter of the present invention relates to a process for preparing alkyl esters of methacrylic acid and its conversion products, which can be used in a multitude of chemical synthesis processes which can lead to a wide variety of different further-processing products, and to an apparatus for performing this process.

Description

technical field [0001] The subject matter of the invention relates in principle to a process for the preparation of alkyl methacrylic acid esters and subsequent products thereof, which can be used in numerous chemical synthesis processes leading to widely varying further processed products, as well as a device for carrying out the process. Background technique [0002] Numerous methods for preparing methacrylates are known from the prior art. Most of these methods have the problem that a large number of material streams leave the process during the production process, so that complex and often expensive workups must be carried out. Such streams of material often have to be disposed of as waste, often resulting in additional costs. In addition to work-up costs or clean-up costs or both, known methods often bring about the problem that possible reaction participants are taken away from the method, thus in principle wasting valuable raw materials or making adjustments required...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/20C07C69/54D01F6/16C08J5/18C08L33/08C09K8/035
CPCC07C231/14C07C67/20C07C253/00Y02P20/10C07C69/54C07C233/09C07C255/16C07B61/00C09D4/00
Inventor U·格罗普R·韦伯T·舍费尔A·佩尔R·辛T·默茨
Owner ROHM CO LTD