Heat weldable roof sheeting and method for coating roofs

Details Heat weldable roof sheeting and method for coating roofs Heat weldable roof sheeting and method for coating roofs

1990-10-04

1992-11-10

Lesmes, George F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 99, 524505, C08L 5300

Patent

active

051624362

ABSTRACT:
A self-adhering heat seamable sheet material for roofing prepared from an uncured polymeric composition of matter which comprises 100 parts by weight of 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; from about 20 to 300 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof per 100 parts of the polymer; and from about 20 to 150 parts by weight of a processing material and mixtrues thereof, per 100 parts of the polymer. A method for covering a roof comprises the steps of applying layers of self-adhering sheet material prepared from an uncured heat seamable polymeric composition of matter to the roof being covered; overlapping adjacent edges of the layers; heating the overlapped areas to about the softening point of the sheet material and seaming the overlapped areas under sufficient pressure to provide an acceptable seam. For practice of the method, a polymeric composition of matter is provided which is self-adhering and does not require the use of an adhesive.

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Rubber-Thermoplastic Compositions, Part V. Selecting Polymers For Thermoplastic Vulcanizates-Rubber Chem. Technology, vol. 55, p. 116.

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