Process for manufacturing organic silazane polymers and ceramics

Details Process for manufacturing organic silazane polymers and ceramics Process for manufacturing organic silazane polymers and ceramics

1987-10-27

1989-09-26

Lorin, Hubert

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 291, 264 292, 264 296, 264 56, 264 65, 264 82, 264 83, 264 85, 264101, 2642104, 2642106, 2642108, 264211, 26421115, 26421118, 501 92, 501 95, 501 97, 528 14, 528 21, 528 31, 528 32, 528 34, 528 35, 528 39, D01F 910, D01F 1104, C04B 3556, C04B 3558

Patent

active

048698547

ABSTRACT:
A process for manufacturing an organic silazane polymer which comprises reacting ammonia with a mixture of at least one compound selected from the group consisting of organic silicon compounds of the following formulae (I) and (II) ##STR1## and at least one compound selected from the group consisting of organic silicon compounds of the following formula (III) ##STR2## in which R represents hydrogen, chlorine, bromine, methyl radical, ethyl radical, phenyl radical or vinyl radical, R.sub.1 represents hydrogen or methyl radical, R.sub.2 represents hydrogen, methyl radical, ethyl radical, phenyl radical or vinyl radical and X represents chlorine or bromine; to obtain an ammonolysis product. The ammonolysis product is polymerized in the presence of a basic catalyst capable of deprotonation to obtain an organic silazane polymer. The silazane polymer may be further melted, shaped and infusibilized. The thus infusibilized product is finally sintered to obtain a ceramic material.

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