Elastomeric composite membrane

Details Elastomeric composite membrane Elastomeric composite membrane

1989-10-06

1990-08-14

Bell, James J.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Control element responds proportionally to a variable signal...

428141, 428142, 428247, 428284, 428287, 428332, 428492, 428495, B32B 2504

Patent

active

049486527

ABSTRACT:
An elastomeric composite membrane for use in construction installations wherein the membrane is in contact with an asphaltic component. The membrane comprises upper and lower sheets bonded together. The upper exposed sheet is resistant to weathering such as to moisture and ultraviolet rays, and in some cases to corrosive chemicals as well, while the lower sheet is compatible with asphalt. Preferably, the lower sheet is comprised of nitrile rubber, and the upper sheet is comprised of a rubber compound such as EPDM.

REFERENCES:
patent: 4233356 (1980-11-01), Jacobs
patent: 4420524 (1983-12-01), Gorgati
patent: 4442167 (1984-04-01), Iwasa et al.
patent: 4461875 (1984-07-01), Crepean
patent: 4514442 (1985-04-01), Crepean
patent: 4551392 (1985-11-01), Draexler

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