Back to results
US 4,824,880 AGranted
Asphalt adhesives
AssigneeOwens-Corning Fiberglas Corporation
InventorsDonald J. Algrim, William E. Uffner, Glenn D. Lamb, Stephen J. Jones
Life of this patent
Estimating the term…
Abstract
An adhesive is provided for adhering roofing shingles wherein the adhesive is a blend of asphalt, an elastomer, a tackifying resin and a petroleum oil.
Claims5
An adhesive composition, for retaining adjacent portions of asphalt roofing sheets against windlift at temperatures of about 50.degree. F. and greater, comprising a blend of asphalt, an elastomer containing about 80% triblock styrene-butadiene-styrene copolymer and about 20% diblock styrene-butadiene copolymer, a tackifying resin and a petroleum oil,
- wherein the blend contains about 25-80% asphalt, a 3-18% elastomer, 5-25% tackifying resin and 10-50% petroleum oil;
- wherein the asphalt is characterized by a kinematic viscosity in the range of from about 500 poise.+-.100 to about 250.+-.50 poise at 140.degree. F. (60.degree. C.), a minimum viscosity of from about 110 cs (centistokes) to about 80 centistokes at 275.degree. F. (135.degree. C.), a penetration (ASTM D5 73) of from about 120 to about 300 dmm (decimillimeters) at 77.degree. F. (25.degree. C.), and a ring and ball softening point from about 90.degree. F. to about 130.degree. F.;
- and
- wherein the petroleum oil is a resinous by-product of a lubricating oil tower used in the crude oil refining process.
1 more element
Dependencies are inferred from the claim text.