Process for the treatment of polyorganosilazanes and/or of polyo

Details Process for the treatment of polyorganosilazanes and/or of polyo Process for the treatment of polyorganosilazanes and/or of polyo

1986-05-06

1987-09-15

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 21, 528 23, 528 25, 528 27, 528 28, 556412, 525474, 525475, C08G 7706

Patent

active

046940600

ABSTRACT:
A process for the treatment of polyorganosilazanes and/or polyorgano(disilyl)silazanes with an effective quantity of a catalyst system comprising (i) an ionic inorganic salt of the formula M.sup.30 A.sup.-, and (II) a compound capable of complexing with the cation M.sup.+ of the salt. The M.sup.+ cation is a metal ion or a quaternary ammonium ion, and A.sup.- is a compatible anion.
The polysilazanes are selected from organopolysilazanes and organopoly(disilyl)silazanes. When treated in this manner, the polysilazanes are characterized by good thermal behavior and can, in particular, be used, after pyrolysis, as precursors of ceramic products.

REFERENCES:
patent: 3007886 (1961-11-01), Parker
patent: 3143514 (1964-08-01), Boyer
patent: 3187030 (1965-06-01), Boyer et al.
patent: 3853567 (1974-12-01), Verbeek
patent: 4308366 (1981-12-01), Millet
patent: 4482669 (1984-11-01), Seyferth et al.
patent: 4482689 (1984-11-01), Halliska
patent: 4535007 (1985-08-01), Cannady
69 Chemical Abstracts, No. 24, p. 9130, 97256y.
EPO Search Report, EP 86 42 0113, dated 8/19/86.
English Language Translation of Japanese Patent Specification No. 54-93100, filed Dec. 29, 1977.

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