Borazine derivatized polycarbosilane polymers and the ceramics d

Details Borazine derivatized polycarbosilane polymers and the ceramics d Borazine derivatized polycarbosilane polymers and the ceramics d

1992-11-02

1993-10-26

Marquis, Melvyn I.

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

Synthetic resins

From boron reactant having at least one boron to hydrogen or...

501 92, 525474, C08G 7908

Patent

active

052567532

ABSTRACT:
The present invention relates to a method of preparing borazine modified polycarbosilane polymers. The method comprises reacting a polycarbosilane polymer with a material comprising at least borazine ring for a time sufficient to produce the desired polymer. This invention also relates to the novel polymers produced by the above method and the ceramic products derived from heating the novel polymers to greater than about 800.degree. C.

REFERENCES:
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patent: 4515742 (1985-05-01), Yajima et al.
patent: 4550151 (1985-10-01), Takamizawa et al.
patent: 4604367 (1986-08-01), Takamizawa et al.
D. Seyferth et al., Silicon Ceramics with a Dash of Boron, Dept. of Chem., Massachusetts Institute of Technology, 15-27.
S. Yajima et al., Synthesis of Continuous Silicon Carbide Fibre with High Tensile Strength and High Young's Modulus, J. of Materials Science 13 (1978), 2569-2576.

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