METHOD OF ADDITIVE POLYMERIZATION OF NORBORNEN AND ITS DERIVATIVES Russian patent published in 2017 - IPC C08F32/08 C08F4/26 

Abstract RU 2626745 C2

FIELD: chemistry.

SUBSTANCE: additive polymerization proceeds with the double bond opening and leads to polymers containing unchanged cyclic structures based on the substituted norbornane skeleton in the backbone. The resulting polymers are used to produce coatings in electronics, telecommunication materials, optical lenses, substrates for plastic displays, photoresistors for the production of chips and displays, dielectrics for semiconductors. The method includes polymerisation of norbornene using a catalyst produced by reacting a cationic palladium complex and boron trifluoride etherate in an organic solvent medium in the presence of norbornene. Distinctive features of the present invention are the use of the initial palladium [(acac) Pd (MeCN)2] BF4, (where acac is acetylacetonate, MeCN = acetonitrile), to which the organophosphorus ligand L is added successively (where L = triphenylphosphine, tricyclohexylphosphine, triisopropylphosphine, bis (diphenyl) phosphinomethane, bis (diphenyl) phosphinopropane, bis (diphenyl) phosphinobutane, bis (diphenyl) phosphinoferrocene) and the cocatalyst-boron trifluoride etherate (BF3⋅OEt2). The process is carried out in an organic solvent medium: mixtures of methylene chloride and toluene, with a molar ratio of ligand to palladium [L]0:[Pd]0=1:1-2:1 and with a molar ratio of boron to palladium [BF3⋅OEt2]0:[Pd]0=10: 1-80:1.

EFFECT: simplifying the polymerization of norbornene derivatives.

2 tbl, 14 ex

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RU 2 626 745 C2

Authors

Suslov Dmitrij Sergeevich

Bykov Mikhail Valerevich

Kravchenko Olga Vakilevna

Pakhomova Marina Vladimirovna

Tkach Vitalij Sergeevich

Dates

2017-07-31Published

2015-07-20Filed