Protective covering material for use such as shingles and siding

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260 4213, 260 4222, 260 4237, 260DIG24, 427186, C08L 2706

Patent

active

041938984

ABSTRACT:
A protective covering material for use such as shingles and siding is primarily composed of a formulation of polyvinyl chloride resin and plasticizer which is mixed with vermiculite is disclosed. The plasticized polyvinyl chloride formulation is approximately composed of 81.5 parts of polyvinyl chloride resin suspension polymer, 23.5 parts plasticizer Di-2-ethylhexyl phthalate, 2.75 parts epoxidized soybean oil, 1.25 parts barium calcium and 1 part copper sulphate. The formula and ingredients and vermiculite are mixed and subsequently heated until they reach a liquid state, whereupon as a mixture they are extruded into sheet-like form and chill-rolled. After the sheet of the combined formulation and vermiculite reach the proper temperature, the sheet is cut into the desired configuration for roofing shingles or other protective covering materials.

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Chemical Abstracts, vol. 78, No. 20, May 21, 1973, p. 125516q.
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Chemical Abstracts, vol. 81, Jul.-Dec. 1974, Chem. Substance Index, & pp. 4359cs & 4360cs, "Vermiculite".

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