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
1991-04-24
1993-09-07
Hoke, Veronica P.
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...
428149, 524493, 524494, 524495, C08K 547, B32B 508
Patent
active
052429709
ABSTRACT:
A rooftop curable heat seamable sheet material for roofing prepared from an uncured polymeric composition of matter comprises a semi-crystalline polymer having more than about 2 percent by weight crystallinity and selected from the group consisting of polyolefins prepared from monomers containing at least 2 carbon atoms, a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures a processing material or mixtures thereof; and a cure package capable of allowing the composition of matter to cure at temperatures of at least about 50.degree. C. A method for covering a roof is also provided and comprises the steps of applying layers of rooftop curable sheet material prepared from said uncured heat seamable polymeric composition of matter to the roof being covered; overlapping adjacent edges of the layers; and seaming the overlapping areas under sufficient heat and some pressure to provide acceptable seam strength, the composition of matter being curable at temperatures of at least about 50.degree. C.
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Rubber-Thermoplastic Compositions Part V Selecting Polymers for Thermoplastic Vulcanizers Rubber Chem. Technol, vol. 55, p. 116.
Davis James A.
Valaitis Joseph K.
Bridgestone Corporation
Hoke Veronica P.
Troy, Sr. Frank J.
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