Composition for waterproofing silica-ceramic insulation bodies

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...

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528 28, 528 31, C08G 7706

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048144070

ABSTRACT:
There is provided a method and compositions for improving the resistance to absorption of water by a porous rigid sintered and pressed block of short staple amorphous silica fiber by distributing within the pores of said block an alkylalkoxysilane or a fluoroalkylalkoxysilane which is substantially free of deleterious halide. Halide may be reduced by special purification techniques or by netralization in situ with acid scavanger.

REFERENCES:
patent: 3128297 (1964-04-01), Kanner et al.
patent: 3271360 (1966-09-01), Williams
patent: 3354095 (1967-11-01), Burzynski et al.
patent: 4342796 (1982-08-01), Brown et al.
patent: 4424157 (1984-01-01), Chung
patent: 4472551 (1984-09-01), White et al.

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