Cationic polymerization bifunctional initiator and preparation method of telechelic polyisobutylene
A technology of polyisobutylene and bifunctional group, which is applied in the application field of synthesizing highly end-capped selective polyisobutylene, to achieve the effects of increasing polymerization temperature, reducing energy consumption and reducing pollution
Active Publication Date: 2020-09-29
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology
[0004] The literature (Macromolecules 2006,39,6861-6870) reported that 1,3-butadiene was used as an end-capping agent to synthesize a structure containing double bonds at the end, but because of the selection of traditional initiators, it could not be completely transformed into
Method used
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example 2
[0028] Example 2, V was synthesized from A2, the synthesis steps were similar to Example 1, and the yield was about 56%.
example 3
[0029] Example 3, V was synthesized from A3, the synthesis steps were similar to Example 1, and the yield was about 58%.
example 4
[0030] Example 4, V was synthesized from A4, the synthesis steps were similar to Example 1, and the yield was about 55%.
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The invention discloses a preparation method of a novel cationic polymerization bifunctional initiator. The initiator is produced to a kilo grade scale meeting industrial production from a laboratory gram-grade scale, so that the synthetic cost of the initiator is greatly lowered. By developing a series of novel initiator derivatives, the brand new initiator which is higher in initiating efficiency, lower in energy consumption and higher in production efficiency are found, and telechelic polyisobutene, the functional groups (hydroxyl, double bonds or chlorine group) of which are fully terminated and the molecular structure of which is controllable, can be synthesized.
Description
technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a preparation method of a series of novel isobutene cationic polymerization bifunctional initiators and an application in synthesizing polyisobutene with high end-capping selectivity. Background technique [0002] Telechelic polyisobutene is a kind of very useful macromonomer and synthetic intermediate, because of its thermal stability, air tightness, hydrophobicity and impermeability brought by saturated carbon chain structure, it can be used to prepare rocket propellants It can also react with diisocyanate to generate polyisobutylene-based polyurethane for biomedical field. The synthesis methods of telechelic polyisobutylene are mainly divided into two categories: one is polymer degradation, that is, butyl rubber is degraded by ozonation, and then reduced with aluminum hydride files or other reducing agents to obtain hydroxyl-terminated and carb...
Claims
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IPC IPC(8): C07C41/09C07C43/164C07C43/205C07C43/174C07C201/12C07C205/34C07C205/37C08F210/10C08F236/06C08F4/00
CPCC07C29/36C07C41/09C07C51/16C07C67/08C07C201/12C08F210/10C07C43/164C07C43/205C07C43/174C07C205/34C07C205/37C07C63/15C07C69/76C07C33/26C07C63/72C07C65/21C07C205/57C07C33/46C07C205/19C08F236/06C08F4/00
Inventor 伍一波张敏张民郭文莉李树新崔秀国杨丹王浩胡月丽
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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