Mineral-filled roofing membrane compositions and uses therefor

Details Mineral-filled roofing membrane compositions and uses therefor Mineral-filled roofing membrane compositions and uses therefor

1997-06-27

1998-12-29

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524492, 524493, C08K 300

Patent

active

058543279

ABSTRACT:
A non-black roof sheeting material may be prepared from a composition of matter comprising 100 parts by weight of at least one polymeric rubber selected from the group consisting of ethylene-propylene-diene terpolymers, ethylene-propylene copolymers and other polyolefinic type polymers; from about 20 to about 300 parts by weight of a blend of at least two mineral fillers, per 100 parts of said polymeric rubber, wherein one of said mineral fillers is a reinforcing silica and wherein another of said mineral fillers is a chemically modified clay; from about 20 to about 150 parts by weight of a processing oil, per 100 parts of said polymeric rubber; from 1 to about 6 parts by weight of a sulfur cure package having at least one accelerator but being devoid of any thiuram accelerators, said cure package allowing said sheeting material to cure at about the same rate as a comparable black roof sheeting material at 160.degree. C. The non-black (white) sheeting material may form the ply of a white-on-black bilaminant roofing membrane or it may represent both the top and bottom ply of a non-black (white) polymeric roof sheeting material.

REFERENCES:
patent: 3280082 (1966-10-01), Natta et al.
patent: 3345325 (1967-10-01), Martin
patent: 4803020 (1989-02-01), Valaitis
patent: 5370755 (1994-12-01), Davis et al.
patent: 5407989 (1995-04-01), Davis et al.
patent: 5582890 (1996-12-01), Davis et al.

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