Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1988-12-30
1990-05-08
Lieberman, Allan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524 68, 524 70, 524 71, C08L 9500, C08L 5102, C08K 512, C08K 501
Patent
active
049239139
ABSTRACT:
An adhesive composition for roofing such as shingles is disclosed which is composed of a hard asphaltic bitumen fraction having a penetration number at 77.degree. F. of from 0 to 30 dmm and a softening point of from about 150.degree. to 220.degree. F. and an elastomeric composition composed of a thermoplastic elastomer and a plasticizer wherein the overall adhesive composition has a penetration number of from 30 to 100 dmm at 130.degree. F. and a softening point of 140.degree. to 230.degree. F. The inventive composition is self-sealing and exhibits excellent squash resistance, low temperature properties and resistance to blowoff. The composition can be used with shingles as well as other types of roofing coverings.
REFERENCES:
patent: 4385142 (1983-05-01), Bohm et al.
patent: 4824880 (1989-04-01), Algrim et al.
Abstract of Japanese Patent 56-5853, Satoyoshi et al., 1/81.
Bettoli Steven C.
Bondoc Alfredo A.
Chich Adem
Grube Louis L.
Lalwani Steven S.
GAF Building Materials Corporation
Goldberg Jules E.
Lieberman Allan M.
Maue Marilyn
Ward Joshua J.
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