Ceramifiable silicone adhesives

Details Ceramifiable silicone adhesives Ceramifiable silicone adhesives

1979-04-26

1981-03-10

Briggs, Sr., Wilbert J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106 735, 106 734, 525477, C08L 8306, C04B 3514

Patent

active

042553164

ABSTRACT:
Ceramifiable silicone adhesives having tack and green strength are provided by mixing a ceramifiable filler with certain silicone pressure-sensitive adhesives. The silicone pressure-sensitive adhesive comprises approximately equal weights, plus or minus five percent, of a polydiorganosiloxane having a viscosity of from 1 to 1000 Pa.multidot.s and a xylene-soluble resin copolymer of R.sub.3 SiO.sub.1/2 siloxane units and SiO.sub.4/2 siloxane units. High loadings (80 weight percent of the ceramifiale adhesive) of ceramifiable filler are attainable without loss of tack and green strength when the polydiorganosiloxane is a mixture of a low-viscosity fluid and a high-viscosity fluid. These ceramifiable silicone adhesives are useful for assembling and adhering a plurality of ceramifiable greenware components to form a ceramifiable composite greenware article.

REFERENCES:
patent: 2676182 (1953-04-01), Daudt et al.
patent: 3090691 (1963-05-01), Weyer
patent: 3108985 (1963-10-01), Weyer
patent: 3205283 (1965-09-01), Modic
patent: 3528940 (1970-09-01), Modic
patent: 3699073 (1972-10-01), Wada et al.

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