Polyformaldehyde copolymer capable of being continuously produced and production method thereof
The technology of a polyoxymethylene copolymer and a production method, which is applied in the field of copolymer material preparation, can solve the problems of poor reaction controllability, low production efficiency, easy generation of gel reaction, etc., and achieves the effect of avoiding gel reaction and improving polymerization efficiency.
Pending Publication Date: 2021-06-25
重庆云天化天聚新材料有限公司
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Problems solved by technology
[0008] The technical problems to be solved are: during the existing polyoxymethylene copolymerization reaction, the reaction controllability is poor, the product quality stability is poor, the production efficiency is low, the gel reaction is easy to occur in the production process, the pipeline is blocked, and the continuous production is affected
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[0031] Step 1. Preparation of polymerized base material: After the A component is mixed, it is mixed with the B component, and the polymerization reaction is carried out at 65-135 °C.
[0032] Component A is a homogeneous solution formed by mixing functional monomers and trioxymethylene, and component B is a homogeneous solution formed by mixing a cyclic ether compound and a catalyst; component A or component B also includes a molecular weight regulator, Alternatively, the A component may also include a cyclic ether compound, which is mixed with the functional monomer and trioxymethylene first, and then mixed with other components.
[0033] When the special structure of polyoxymethylene is industrially produced by bulk polymerization, problems such as difficult to control polymerization production, poor product quality, low production efficiency, and easy gelation of monomers are prone to occur. The reason is either that the catalyst is not sufficiently diluted, the distributi...
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Abstract
The invention relates to the technical field of copolymerized material preparation, and discloses a polyformaldehyde copolymer capable of being continuously produced and a production method thereof. Thepolyformaldehyde copolymer comprises the following components in parts by weight: 100 parts of a polymerization base material, 0.2-1.1 parts of an antioxidant, 0.02-0.21 part of a heat stabilizer, 0.3-0.78 part of a lubricant, 0.1-5.3 parts of an aldehyde absorbing agent and 0.02-0.53 part of organic weak acid, the polymerization base material is formed by uniformly mixing and polymerizing a component A and a component B, the component A is a homogeneous solution formed by mixing 0.01-1.11 parts by weight of a functional monomer and 100 parts by weight of trioxymethylene, and the component B is a homogeneous solution prepared by mixing the following components in parts by weight: 0.50-5.5 parts of a cyclic ether compound and 0.01-0.22 part of a catalyst. The polyformaldehyde copolymer is suitable for large-scale industrial production and is simple and easy to operate, and the product quality is stable.
Description
technical field [0001] The invention relates to the technical field of preparation of copolymer materials, in particular to a continuously produced polyoxymethylene copolymer and a production method thereof. Background technique [0002] Polyoxymethylene resin has excellent properties in terms of mechanical properties, fatigue resistance, heat resistance, electrical properties, slidability and formability, so it is widely used in electrical equipment, automotive parts, precision mechanical parts, etc. However, with the continuous improvement of use requirements and the continuous expansion of application fields, people's requirements for polyoxymethylene resin are also getting higher and higher. It is found that it is often difficult to meet the requirements only through physical modification, and the cost is high. Therefore, chemical Modified POM has attracted more and more interest, so there have been some related reports on the chemical functionalization of POM. [0003...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08G2/22C08G2/18C08L59/04C08L75/04
CPCC08G2/22C08G2/18C08L59/04C08L75/04
Inventor 唐晓东罗灵刘春文黎泽东杨宗海普雪涛杨骁樊钹
Owner 重庆云天化天聚新材料有限公司