Norbornene, hexafluoropropylene and 2,5-dihydro-2,5-dimethoxy furan ternary polymerization method

Abstract

The invention relates to a norbornene, hexafluoropropylene and 2,5-dihydro-2,5-dimethoxy furan ternary polymerization method. The norbornene, hexafluoropropylene and 2,5-dihydro-2,5-dimethoxy furan ternary polymerization method is characterized by comprising the following steps: adding polymerization monomer norbornene, hexafluoropropylene and 2,5-dihydro-2,5-dimethoxy furan into a high-pressure kettle in a molar ratio being 1 to 1 to 1, and adding a solvent to dissolve; adding an initiator, reacting for 1-4 hours at a temperature being 0-150 DEG C under pressure being 1-3 MPa, wherein the initiator is prepared from di-tert-butyl peroxide and tert-butyl peroxyacetate in a molar ratio being (0.1:1) to (1:0.1), and dose of the initiator accounts for 0.1%-1.5% of the total weight of the polymerization monomer; pouring the product obtained by reaction into an alcohol containing solution, washing obtained precipitates with alcohol, and vacuum-drying to obtain the norbornene, hexafluoropropylene and 2,5-dihydro-2,5-dimethoxy furan ternary polymer.

Description

Technical field [0001] The invention relates to the field of norbornene copolymers, in particular to a ternary copolymerization method of norbornenes, hexafluoropropylene and 2,5-dihydro-2,5-dimethoxyfuran. Background technique [0002] The Chinese patent No. ZL201610136476.7 "Norbornene, hexafluoropropylene and 1-hexene ternary copolymerization catalyst and ternary copolymerization method" and the Chinese patent No. ZL201610151343.7 "Norbornene, six Fluoropropene and acrylonitrile ternary copolymerization catalyst and ternary copolymerization method", which uses the iron-titanium complex catalyst composed of iron pentamethylene, titanium tetrachloride and ligands for catalytic polymerization and bis(pentamethylcyclopentane Dienyl) cerium chloride, titanium tetrachloride and ligand cerium-titanium complex catalyst for catalytic polymerization, the obtained terpolymer contains perfluoro monomer chain link, has good light transmittance, but in There are still shortcomings in heat ...

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Problems solved by technology

[0003] Notification number is that CN106632852A discloses " norbornene class, vinyl acetate and perfluoromethyl vinyl ether three-way copolymerization catalyst and three-way copolymerization method ", and notification number is that CN106832123A discloses " norbornene class, vinyl ether and Perfluoromethyl vinyl ether ternary copolymerization catalyst and ternary copolymerization method", the announcement number is CN106832119A discloses "norbornene, tetrafluoroethylene and perfluoromethyl vinyl ether ternary copolymerization catalyst and ternary copolymerization method ", the notification number is CN107141377A discloses "norbornene, acrylonitrile and perfluoromethyl vinyl ether ternary copolymerization catalyst and ternary copolymerization method", the copolymers obtained by these technical solutions still have insufficient heat resistance Problem; the announcement number is CN107189013A disclosed "norbornene, octafluorocyclopentene and perfluoromethyl vinyl ether ternary copolymerization catalyst and ternary copolymerization method", the announcement number is CN107189014A disclosed "norbornene, Styrene and Perfluoromethyl Vinyl Ether Ternary Copolymerization Catalyst", the announcement number is CN106866884A disclosed "Norbornene, Vinyl Cyclohexane and Perfluoromethyl Vinyl Ether Ternary Copolymerization Catalyst and Ternary Copolymerization Method "The preparation of copolymers by these technical schemes is mainly obtained by catalytic polymerization of complex catalysts. The catalyst preparation process requires anhydrous and oxygen-free, the polymerization reaction requires anhydrous and oxygen-free, and the reaction conditions are harsh.