Shin-etsu Chemical Co., Ltd.

Ryuto Hayashi

Kenichi Fukuda

Hideyoshi Yanagisawa

Kazunori Kondo

Hitoshi Maruyama

A perfluoropolyether-based rubber composition which gives cured objects excellent in terms of heat resistance, low-temperature resistance, organic-solvent resistance, and acid resistance, the rubber composition being characterized by comprising (a) a linear perfluoropolyether compound having a number-average molecular weight of 1,000-100,000 and including at least two azido groups in the molecule and a divalent perfluoroalkyl ether structure in the main chain and (b) a linear perfluoropolyether compound having at least three ethynyl groups in the molecule.

Perfluoropolyether-based rubber composition, cured object obtained therefrom, and product including same

An azide group-containing fluoropolymer of formula (1) having a perfluoropolyether group of specific molecular structure as the backbone and terminated with an azide group via methylene group is provided.N&#x2014;CH&#x2014;Rf&#x2014;CH&#x2014;N&#x2003;&#x2003;(1)

Azide group-containing fluoropolymers and method for preparing the same

A silicone-modified polybenzoxazole resin comprising repeating units of formulae (1a) and (1b) is prepared by addition polymerization. Rto Rare a C-Cmonovalent hydrocarbon group, m and n are integers of 0-300, Ris C-Calkylene or phenylene, a and b are positive numbers of less than 1, a+b=1, and Xis a divalent linker of formula (2). The resin is flexible, soluble in organic solvents, and easy to use. 

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Annaka, Japan

Ryuto Hayashi