Sheet material

Details Sheet material Sheet material

1975-05-21

1976-12-28

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 285AV, 260 285B, C08L 9500

Patent

active

040001407

ABSTRACT:
The invention relates to a waterproof sheet material, suitable for use as a waterproof roofing layer, as a bridge deck or like waterproofing material, and as a dampcourse material, the sheet being composed of a mixture comprising (a) a bituminous material, (b) a synthetic polymeric material, and (c) particulate filler, said synthetic polymeric material comprising at least one uncured copolymer selected from ethylene-propylene copolymers and ethylene-propylene-diene copolymers and at least one synthetic polar elastomer. The sheet material may contain ethylene-vinyl acetate copolymer, and plasticizer, fire-retardant, and minor additives such as antioxidants may be incorporated. A suitable synthetic polar elastomer is nitrile rubber. The sheet material maintains good performance properties under low temperature conditions.

REFERENCES:
patent: 3356764 (1967-12-01), Gentile
patent: 3414533 (1968-12-01), Trieschmann et al.
patent: 3443619 (1969-05-01), Kindle
patent: 3646168 (1972-02-01), Barrett
patent: 3790519 (1974-02-01), Wahlborg

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