申请人:Eastman Kodak Company
公开号:US03988295A1
公开(公告)日:1976-10-26
Benzoxazole or oxadiazole type compounds chemically combined with certain hydroxyaryl type compounds give greatly and unexpectedly improved ultraviolet stabilization to polymeric materials at concentrations ranging from about 0.05 to about 5.0 percent by weight, preferably from about 0.1 to about 2.0 percent by weight of the polymer being stabilized. These stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including pigments, colorants, fillers, reinforcing agents and the like. These stabilizers may be incorporated into the polymer melt, dissolved in the polymer dope, or coated on the exterior of the molded article, film or extruded fiber.
若将苯并噁唑或噁二唑类化合物与某些羟基芳香类化合物进行化学结合,则在浓度范围为约0.05至约5.0重量百分比(优选为约0.1至约2.0重量百分比)的聚合物中,可大大且意外地提高其对紫外线的稳定性。这些稳定剂在聚合物组成中常用的其他添加剂(如颜料、着色剂、填料、增强剂等)存在时仍然有效。这些稳定剂可以被加入到聚合物熔融物中,溶解在聚合物溶液中,或者涂覆在成型件、薄膜或挤出纤维的外表面上。