EPDM-based roofing shingle compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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5253317, 5253318, 524401, 524405, 524424, 524444, 524445, 524449, 524451, 524481, 524484, 524487, 524497, C08F21016, C08F21018, C08L 2300, C08L 2304

Patent

active

061333786

ABSTRACT:
High durometer, polymeric roofing shingles with varying colors and shades of color may be prepared from a composition of matter comprising 100 parts by weight of a ethylene-propylene-diene (EPDM) terpolymer; from 25 to about 400 parts by weight of at least one non-combustible filler per 100 parts of ethylene-propylene-diene (EPDM) terpolymer; from 0 to about 125 parts by weight of at least one combustible filler, per 100 parts of ethylene-propylene-diene (EPDM) terpolymer; from 0 to about 135 parts by weight of a thermoplastic modifying polymer; from 0 to about 10 parts by weight of reinforcing fibers, per 100 parts of ethylene-propylene-diene (EPDM) terpolymer; from about 20 to about 75 parts by weight of a processing oil per 100 parts of ethylene-propylene-diene (EPDM) terpolymer; and from about 1 to about 6 parts by weight of a sulfur cure package having at least two curing accelerators. Fiber reinforced, high durometer, EPDM-based roofing shingles of the present invention are a suitable replacement for traditional slate, wood or asphalt roofing shingles used to cover sloped roofs. A method is further provided for covering sloped roofs comprising applying a plurality of the fiber reinforced, high durometer EPDM-based roofing shingles of the present invention to a sloped roof in a preselected installation pattern.

REFERENCES:
patent: 3345325 (1967-10-01), Martin
patent: 4405680 (1983-09-01), Hansen
patent: 4431776 (1984-02-01), Honsberg
patent: 4461875 (1984-07-01), Crepeau
patent: 4666785 (1987-05-01), Crepeau
patent: 5242970 (1993-09-01), Davis et al.
patent: 5389715 (1995-02-01), Davis et al.
patent: 5512118 (1996-04-01), Davis et al.
Roof Curable EPDM Flashing Single Ply Membrane Roofing, Allen E. Crepeau (May 6, 1982).

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