Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Patent
1980-09-15
1982-03-16
Ives, P.
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
428520, 428913, 428403, B32B 2708, B44D 144
Patent
active
043201741
ABSTRACT:
The invention relates to obtaining weather-ability or U.V. light stability in vinyl polymeric translucent and transparent materials, which are designed for use in corrugated roofing, films for greenhouses, and the like. It has been found that by making a composite vinyl polymeric material where the main material or substrate is a transparent or translucent vinyl polymer and capping or coating it with a very thin film of a plasticized vinyl polymer containing a high level of a clear U.V. light absorber or stabilizer, such as, for example 1-cyano-2,2-diphenyl ethylacrylate, excellent weatherability is obtained. The important feature is the concentration of the clear U.V. stabilizer at the surface of the composite material which also results in the use of less U.V. stabilizer.
REFERENCES:
patent: 3194725 (1965-07-01), Pounds
patent: 3429732 (1969-02-01), Baitinger
patent: 4100325 (1978-07-01), Summers et al.
patent: 4156749 (1979-05-01), Lustig et al.
Rabinovitch Elvira B.
Summers James W.
Ives P.
The B. F. Goodrich Company
Wymbs Roy P.
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