Reformed, inorganic polysilazane

Details Reformed, inorganic polysilazane Reformed, inorganic polysilazane

1989-03-14

1990-06-12

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

423344, C01B 3300, C01B 21063, C01B 3306

Patent

active

049331604

ABSTRACT:
A novel, reformed, inorganic polysilazane which is liquid or solid at room temperature and soluble in o-xylene at room temperature and which has (a) a number-average molecular weight of 200-500,000, (b) contents of Si, N and H of 50-70% by weight, 20-34% by weight and 5-9% by weight, respectively; and (c) --SiH.sub.2 -- and --SiH.sub.3 groups, the molar ratio of the --SiH.sub.2 -- groups to the --SiH.sub.3 groups being 2.0:1 to 8.4:1. The reformed polysilazane is obtained by reaction of a solution of a polysilazane in an organic base-containing solvent to polycondense the polysilazane.

REFERENCES:
patent: 4482669 (1984-11-01), Seyferth et al.
patent: 4840778 (1989-06-01), Arai et al.

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