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Novel dimethyl-tertiary butyl-[4-methyl-4-alkene pentyloxy] silicane monomer for use in cationic polymerization and preparation method thereof

A technology of dimethyl tert-butyl and cationic polymerization, applied in chemical instruments and methods, compounds of group 4/14 elements of the periodic table, organic chemistry, etc., can solve the difficulty and mechanism of polymer hydrophilic properties Unclear, poor hydrophilicity, etc.

Inactive Publication Date: 2010-06-16
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In U.S.Patent 5,741,331, U.S.Patent 6,102,939 and U.S.Patent 6,197,240, it is reported that polyisobutylene-b-polystyrene is used as a biological material, but this type of material has poor hydrophilicity; in addition, many polar monomers cannot directly participate in positive Ionic polymerization, it is very difficult to improve the hydrophilic properties of polymers by combining cationic polymerization with other polymerizations (such as negative ion polymerization, free radical polymerization, ring-opening polymerization), and many mechanisms are still unclear

Method used

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  • Novel dimethyl-tertiary butyl-[4-methyl-4-alkene pentyloxy] silicane monomer for use in cationic polymerization and preparation method thereof
  • Novel dimethyl-tertiary butyl-[4-methyl-4-alkene pentyloxy] silicane monomer for use in cationic polymerization and preparation method thereof
  • Novel dimethyl-tertiary butyl-[4-methyl-4-alkene pentyloxy] silicane monomer for use in cationic polymerization and preparation method thereof

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Embodiment 1

[0016] In a 500mL three-neck flask equipped with magnetic stirring, a constant pressure dropping funnel, and a reflux condenser, under anaerobic and anhydrous conditions, the temperature was controlled at 30°C, and 0.1mol of polished magnesium chips was added to anhydrous tetrahydrofuran 60 mL, and then dropwise added 0.083 mol of 3-chloro-2-methylpropene solution dissolved in 40 mL of tetrahydrofuran to the solution, and the concentration of 3-chloro-2-methylpropene in tetrahydrofuran was 0.002 mol / mL. After the dropwise addition, the reaction was continued until the magnesium reaction was complete. Add 0.124mol of ethylene oxide and THF (50mL mixed solution rapidly at -20~-15°C. The molar ratio of 3-chloro-2-methylpropene to magnesium and ethylene oxide is 1:1.2:1.5 , after adding, continue the reaction at room temperature. Add 10% ammonium chloride water dropwise, hydrolyze 100mL of the solution, then extract with anhydrous ether, wash the oil layer with 400-500mL of deioni...

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Abstract

The invention relates to a preparation method of a novel dimethyl-tertiary butyl-[4-methyl-4-alkene pentyloxy] silicane monomer for cationic polymerization. In the method, 3-chloro-2-methyl propene is taken as a raw material to prepare the novel dimethyl-tertiary butyl-[4-methyl-4-alkene pentyloxy] silicane monomer by a Grignard reaction and a hydroxyl protective reaction. The preparation method has the advantages that the novel monomer can be used in the cationic polymerization and can prepare polyisobutylene thermoplastic elastomers with hydrophilicity.

Description

technical field [0001] The present invention relates to new monomer of organic compound and preparation method thereof, specifically, the present invention relates to the novel monomer dimethyl tert-butyl-[4-methyl-4-ene pentyl-[4-methyl-4-enepentyl] whose side group contains hydroxyl group Oxy]silanes and methods for their preparation. Background technique [0002] Polyisobutylene-based thermoplastic elastomers have many unique properties, such as excellent mechanical properties, toughness, chemical stability, barrier properties, good processing characteristics and recyclability, and in the main chain of the polymer, tertiary carbon atoms and The secondary carbon atoms are arranged alternately, which makes the isobutylene-based thermoplastic elastomer have good biostability and biocompatibility, and is a good bioinert medical material. In U.S.Patent 5,741,331, U.S.Patent 6,102,939 and U.S.Patent 6,197,240, it is reported that polyisobutylene-b-polystyrene is used as a biol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08F30/08
Inventor 李树新伍一波郭文莉商育伟于波
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY