A kind of preparation method of halogenated polymer

A technology for compounds and copolymers, applied in the field of preparation of halogenated polymers, can solve the problems of unsatisfactory, high technical requirements for aluminoxane preparation, difficult preparation of initiator systems, etc., so as to reduce energy consumption and improve polymerization efficiency. , the effect of simplifying the production process
CN106146702BActive Publication Date: 2018-08-17CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2018-08-17

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Abstract

The invention discloses a preparation method of a halogenated monoolefine-alkyl styrol copolymer. The preparation method comprises the steps that monoolefine shown in the formula II and alkyl styrol shown in the formula III make contact with components in an initiator system in alkane under the condition of cationic polymerization, and the obtained solution containing the halogenated monoolefine-alkyl styrol copolymer makes with a compound containing halogen for a halogenating reaction, and the halogenated monoolefine-alkyl styrol copolymer is obtained, wherein the initiator system contains a compound capable of providing protons, lewis acid and an activating agent, and the activating agent is selected from the compound shown in the formula I-1 and the compound shown in the formula I-2. By means of the method, polymerization efficiency can be obviously improved, the higher polymer yield is obtained, the polymer with high molecular weight can be obtained, the solvent replacement process and the polymer redissolution process needed in a slurry polymerization are omitted, and the production process is simplified.
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Description

technical field

[0001] The invention relates to a preparation method of a halogenated polymer, more specifically, to a preparation method of a halogenated monoolefin-alkylstyrene copolymer. Background technique

[0002] At present, the slurry polymerization method using dichloromethane as diluent is widely used in the world to produce butyl rubber. The main reason is that the slurry polymerization method has high production efficiency, and the product has high molecular weight and good processability. Compared with the slurry polymerization method, the solution polymerization method has no obvious advantages in these aspects, especially the products obtained by the solution polymerization method have low molecular weight and poor processability, so it is difficult to compete with the products obtained by the slurry polymerization method in the market . However, the development space of the solution polymerization method is relatively broad. For example, the solution polymer...

Claims

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