Ultraviolet light resistant composition of transparent and translucent vinyl polymers
申请人:The B.F. GOODRICH Company
公开号:EP0047991A2
公开(公告)日:1982-03-24
The invention relates to obtaining weatherability 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.
本发明涉及获得乙烯基聚合物半透明和透明材料的耐候性或紫外光稳定性,这些材料可用于波纹屋顶、温室薄膜等。研究发现,通过制造一种复合乙烯基聚合物材料,其主要材料或基材是透明或半透明的乙烯基聚合物,并在其表面覆盖或涂覆一层非常薄的塑化乙烯基聚合物薄膜,该薄膜含有大量透明的紫外线吸收剂或稳定剂,例如 1-氰基-2,2-二苯基乙基丙烯酸酯,从而获得极佳的耐候性。其重要特点是透明紫外线稳定剂集中在复合材料的表面,从而减少了紫外线稳定剂的使用量。