Torchable roll roofing composition

Details Torchable roll roofing composition Torchable roll roofing composition

1994-02-23

1995-09-05

Nakarani, D. S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428143, 428323, 428489, 523351, 524 68, 524487, 525 99, 525105, 525106, 525314, D06N 704

Patent

active

054477751

ABSTRACT:
The present invention is a bituminous roofing composition which is especially useful to coat and/or saturate a roll roofing membrane. The composition comprises from 2 to 10 percent by weight, based on block copolymer plus bitumen, of a block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene, from 25 to 300 parts by weight per hundred parts of said block copolymer of an endblock compatible resin which has a softening point above 100.degree. C., and the balance being a bituminous material. Preferably, the solubility parameter of the endblock resin is within 0.3 [cal/cm.sup.3 ].sup.1/2 of that of the vinyl aromatic hydrocarbon portion of the block copolymer.

REFERENCES:
patent: 3917607 (1975-11-01), Crossland et al.
patent: 4032491 (1977-06-01), Schoenke
patent: 4882384 (1989-11-01), Willis et al.
patent: 5036119 (1991-07-01), Berggren
patent: 5051457 (1991-09-01), Gelles
patent: 5308676 (1994-05-01), Gelles

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