Blend of asbestos fibers, carboxylated copolymer latex and synth

Details Blend of asbestos fibers, carboxylated copolymer latex and synth Blend of asbestos fibers, carboxylated copolymer latex and synth

1979-01-18

1981-01-20

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296RW, 428521, 428522, C08L 2510, C08L 3102

Patent

active

042461553

ABSTRACT:
Compositions comprising asbestos fibers and blends of at least two latexes wherein the solids in the blended latexes comprise (A) from 5 to 40 parts by weight of a carboxylated copolymer comprising 10 to 25 parts by weight of methacrylic acid and correspondingly 90 to 75 parts by weight of at least one unsaturated carboxylic acid ester of the formula CH.sub.2 .dbd.C(R.sub.2)COOR.sub.1, wherein R.sub.1 is an alkyl group containing 1 to 8 carbon atoms and R.sub.2 is hydrogen or methyl and (B) 95 to 60 parts by weight of at least one synthetic rubber. The binder composition employed in this invention provides asbestos sheets having utility in flooring felts and gasket materials having relatively little change in elongation at room temperature, at 350.degree. F. and after soaking in dioctylphthalate.

REFERENCES:
patent: 1956053 (1934-04-01), Tucker
patent: 2759813 (1956-08-01), Feigley
patent: 3035004 (1962-05-01), Glavis
patent: 3193446 (1965-07-01), Eisenberg
patent: 3838085 (1974-09-01), Myers et al.

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