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...
Patent
1992-07-06
1993-08-10
Michl, Paul R.
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...
524271, 524273, C08K 536, C08F29704
Patent
active
052349870
ABSTRACT:
A solvent-based adhesive composition for adhering together roofing materials, such as synthetic EPDM rubber sheets, which provides long term storage stability is provided. The adhesive composition includes a halogenated copolymer of isobutylene and p-methyl styrene, a thermoplastic rubber comprising a styrene-ethylene-butylene-styrene block copolymer, an endblock resin for the thermoplastic rubber, a tackifier, an accelerator/cure package, and a solvent. The cured composition exhibits a peel strength of at least 3.0 pounds per lineal inch at room temperature, at least 3.0 pounds per lineal inch at 212.degree. F., supports a static load of at least 0.67 pounds at 158.degree. F. for a minimum of 24 hours, and exhibits a viscosity increase of less than 1500 centipoise after aging at 130.degree. F. for six weeks.
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Briddell Brian J.
Fisher Dennis K.
Hubbard Michael J.
Adco Products Inc.
Asinovsky Olga
Michl Paul R.
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