Torchable roll roofing membrane
AssigneeShell Oil Company
InventorsRichard Gelles, Mark A. Berggren, Dennis W. Gilmore
Life of this patent
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Abstract
A torchable roll roofing membrane which comprises a reinforcing mat which is saturated and coated with bituminous composition comprising a bituminous component and, optionally, an unhydrogenated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diolefin, and coated onto one surface, a bituminous composition comprising a bituminous component and a hydrogenated block copolymer of a monalkenyl aromatic hydrocarbon and a conjugated diolefin.
Claims10
A torchable roll roofing membrane which comprises a reinforcing mat which is saturated with a first bituminous composition comprising a bituminous component and from 9 to 15 parts of an unhydrogenated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diolefin per 100 parts of said first bituminous composition, a second bituminous composition comprising a bituminous component and from 3 to 15 parts per hundred of the total bituminous composition of a hydrogenated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diolefin.
The membrane of claim 6 wherein the material of the reinforcing mat is selected from the group consisting of glass and polyester fibers.
A method of making a torchable roll roofing membrane which comprises saturating a reinforcing mat with a first bituminous composition comprising a bituminous component and from 9 to 15 parts of an unhydrogenated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diolefin per 100 parts of said first bituminous composition, a second bituminous composition comprising a bituminous component and from 3 to 15 parts per hundred of the total bituminous composition of a hydrogenated block copolymer of a monoalkenyl aromatic hydrocarbon and a conjugated diolefin.
Dependencies are inferred from the claim text.