Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1987-04-30
1989-05-02
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
528 10, 528 35, 528 43, 556430, 556431, 556435, C08F 246
Patent
active
048268925
ABSTRACT:
A new polycarbosilastyrene copolymer which comprises recurring carbosilane units of the formula I: ##STR1## and recurring silastyrene units of the formula II: ##STR2## and having easy shaping and sintering properties, is produced by ultra-violet ray treatment and/or heat treatment of a polysilastyrene material and is useful for producing a shaped sintered silicon carbide article by shaping the polycarbosilastyrene copolymer to a desired form, by applying an ultra-violet ray treatment or heat treatment to the shaped article, and by sintering the resultant corss-linked, non-fusible shaped article at an elevated temperature.
REFERENCES:
patent: 4052430 (1977-10-01), Yajima et al.
patent: 4324901 (1982-04-01), West et al.
patent: 4446169 (1984-05-01), Castle et al.
Chemical Abstracts, vol. 99, 1983, p. 282, West et al., "Polysilastyrene: Phenylmethylsilane-dimethylsilane Copolymers . . . ".
Chemical Abstracts, vol. 101, 1984, p. 306, Sainclair "Pyrolysis of Polysilanes".
Aoyama Toshihiro
Shimada Keizo
Yoshida Hidetsugu
Marquis Melvyn I.
Teijin Limited
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