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Применить Всего найдено 3. Отображено 3.
13-06-2023 дата публикации

Alpha-pinene lysate, derivative of alpha-pinene lysate, terpolymer of isobutene and diene and preparation method of terpolymer

Номер: CN116253824A
Автор: ZHANG LIQUN, HAN YANG, QIN XUAN, MEN MINGRAN, ZHENG HONGBING, LUAN BO
Принадлежит:

The invention provides an alpha-pinene lysate and a derivative thereof, an isobutene and diene terpolymer and a preparation method thereof, and in the copolymer system, the content of the alpha-pinene lysate and the derivative thereof is 1-50%, the content of an isobutene monomer is 50-99%, and the content of a diene monomer is 1-50%. By introducing a copolymerization structure of the alpha-pinene lysate and the derivative thereof, the unsaturation degree of a traditional isobutene and diene copolymerization product is improved.

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Номер записи: 1
06-06-2023 дата публикации

Butyl rubber with wide molecular weight distribution and synthesis method thereof

Номер: CN116217773A
Автор: XIE QING, LI LIXIA, HAN FEI, JING SHUAILIN, MEN MINGRAN, LI CHENG, ZHENG HONGBING, LUAN BO
Принадлежит:

The invention provides butyl rubber with wide molecular weight distribution and a synthesis method thereof, and the method comprises the following steps: carrying out slurry polymerization reaction on a polymeric monomer in a mixed solvent in the presence of an initiator and a chain transfer agent to obtain the butyl rubber, the polymeric monomers comprise isobutene and isoprene, the mixed solvent comprises a polarity regulator, a polymerization solvent-methyl chloride is optionally adopted, and the chain transfer agent is selected from C4-10 straight-chain olefin, C4-10 branched-chain olefin or cycloolefin; and the polarity regulator is selected from fluoro hydrocarbon CxHyFz. According to the method, the high molecular weight part and the low molecular weight part can be simultaneously regulated and controlled in the butyl rubber polymerization process, and the butyl rubber with wide molecular weight distribution is obtained, so that the obtained butyl rubber has high raw rubber strength ...

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Номер записи: 2
23-06-2023 дата публикации

Preparation method and application of butyl rubber

Номер: CN116284530A
Автор: XIE QING, LI LIXIA, HAN FEI, MEN MINGRAN, JING SHUAILIN, LI CHENG, ZHENG HONGBING, WANG YANJIN, LUAN BO
Принадлежит:

The invention provides a preparation method of butyl rubber. The preparation method comprises the step of introducing a polarity regulator in the preparation process. According to the synthesis method of the butyl rubber, one or more polarity regulators are introduced, on one hand, the polarity is improved, and the reaction activity of isoprene in the butyl polymerization process is improved; on the other hand, the dispersion state during polymer polymerization is improved, and the industrial problem of caking and hanging of butyl rubber due to temperature rise in the reaction process is solved.

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Номер записи: 3