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PMMA continuous bulk polymerization process

A bulk polymerization and process technology, applied in the field of continuous bulk polymerization of PMMA, can solve the problem of constant post-treatment procedures, achieve low post-treatment energy consumption, avoid local gel effects, improve optical properties or fading properties and thermal stability sexual effect

Pending Publication Date: 2021-10-01
中石油吉林化工工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, two kinds of solvents are used in this patent, and the product will contain a large amount of sewage, which greatly changes the post-treatment process.

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  • PMMA continuous bulk polymerization process

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Embodiment Construction

[0021] In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that are used in the embodiments. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative efforts.

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Abstract

The invention relates to a PMMA ) continuous bulk polymerization process. The PMMA continuous bulk polymerization process comprises the following steps: a, quenching an MMA monomer, a comonomer and a recycled monomer, and mixing with an auxiliary agent; b, pumping the mixed material to a reactor, and polymerizing; and c, heating the polymerized product, and conveying the heated product to the downstream of the system. The polymerization process effectively controls the influence of the gel effect on the quality caused by the increase of local viscosity in the polymerization process, has stable polymerization monomer conversion rate, and does not contain a solvent, so that the problem of sewage treatment is avoided, the post-treatment energy consumption is low, and the product quality is good.

Description

technical field [0001] The invention relates to the field of PMMA production, in particular to a PMMA continuous bulk polymerization process. Background technique [0002] Polymethyl methacrylate (PMMA) is one of the three important light-transmitting materials in the field of new chemical materials. It is widely used in automobiles and transportation, general injection molding materials, light box advertising pages and construction industries. In recent years, with the development of high-transmittance PMMA products, the cutting-edge applications of advanced PMMA have entered the fields of LED / LCP display, optical materials, optical fibers, and medical high-end materials. The proportion of online applications is also increasing year by year. [0003] Polymethyl methacrylate (PMMA) is a copolymer made of methyl methacrylate (MMA) as the main body and a small amount of acrylate monomer. The polymerization process mainly includes suspension polymerization, solution polymeriza...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/06C08F2/02
CPCC08F220/14C08F2/02C08F220/06
Inventor 张凤涛巩传志娄喜营吴伟
Owner 中石油吉林化工工程有限公司