Infusibilization of organic silazane polymers

Details Infusibilization of organic silazane polymers Infusibilization of organic silazane polymers

1989-06-27

1991-04-16

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525477, 525475, C08F28300

Patent

active

050083481

ABSTRACT:
An infusible organic silazane polymer is prepared by melting, shaping, and infusibilizing an organic silazane polymer. The infusibilizing step includes two steps of treating the shaped polymer with a gas containing the vapor of an infusibilizing silicon, boron, phosphorus or metal compound and further treating with a water vapor-containing gas or ammonia gas. The infusible polymer is efficiently sintered into ceramic fibers without fusion bond.

REFERENCES:
patent: 4730026 (1988-03-01), Bolt et al.
patent: 4767831 (1988-08-01), Bartos et al.
patent: 4869854 (1989-09-01), Takeda et al.

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