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    • 9. 发明授权
    • UV-absorbing condensation polymeric composition
    • 紫外线吸收缩合聚合物组合物
    • US4661566A
    • 1987-04-28
    • US826645
    • 1986-02-06
    • Wayne P. PruettRichard H. S. WangSamuel D. HilbertMax A. Weaver
    • Wayne P. PruettRichard H. S. WangSamuel D. HilbertMax A. Weaver
    • C08L67/00C08G63/685C08G64/00C08K5/16C08K5/20C08K5/34C08K5/36C08K5/43C08K5/47C08L69/00C08G63/46C08G63/62
    • C08G64/00C08G63/685
    • Compositions comprising polyester or polycarbonate having reacted therein a total of from about 1.0 to about 5,000 parts by weight per million parts by weight of polyester of at least one UV absorbing compound of the formula ##STR1## wherein R is alkyl or the like, X is carbonyl or sulfonyl, R.sup.1 is hydrogen or a substituent, and Y and Z are hydrogen or substituents such as cyano or alkoxycarbonyl, with the provision that at least one of R, R.sup.1, Y, and Z is, or forms part of, or contains one or more reactive groups capable of undergoing a condensation reaction under polyester forming conditions, such that the UV absorbing compound is reacted into the polymer. The compound has a maximum light absorbance within the range of from about 320 nm to about 380 nm, which is nonextractable from the polyester and stable under the polyester processing conditions, for imparting UV screening properties to the polymer. Many products such as fruit juices, soft drinks, wines, food products, cosmetics and shampoos are deleteriously affected by UV light when packaged in clear plastic containers which pass significant portions of the available light at any wavelength from approximately 250 to 390 nm. By use of the present compounds polymeric containers can be manufactured which absorb these harmful wavelengths and therefore reduce or eliminate the UV light degradation of products packaged therein. A further advantage of the present polymeric compositions is that conventional polyester dyes and other additives such as pigments, fillers, brighteners and the like may be incorporated therein, and the UV screening properties of the methine compounds impart significant stabilization to both the polyester and the dyes.
    • 包含聚酯或聚碳酸酯的组合物,其中总共具有约1.0至约5,000重量份/百万重量份的至少一种下式的UV吸收化合物的聚酯:其中R是烷基等,X是 羰基或磺酰基,R 1是氢或取代基,并且Y和Z是氢或取代基如氰基或烷氧基羰基,条件是R,R 1,Y和Z中的至少一个是或形成一部分或包含 一种或多种在聚酯形成条件下能够进行缩合反应的反应性基团,使得UV吸收化合物反应成聚合物。 该化合物的最大吸光度在约320nm至约380nm的范围内,其从聚酯是不可剥离的并且在聚酯加工条件下稳定,用于赋予聚合物UV屏蔽性能。 许多产品如果汁,软饮料,葡萄酒,食品,化妆品和洗发水在包装在透明塑料容器中时受到紫外线的有害影响,透明塑料容器将可见光的大部分通过大约250至390 nm的任何波长传播。 通过使用本发明化合物,可以制造吸收这些有害波长的聚合物容器,从而减少或消除包装在其中的产品的紫外光降解。 本发明的聚合物组合物的另一个优点是可以引入常规的聚酯染料和其它添加剂,例如颜料,填料,增白剂等,并且次甲基化合物的UV屏蔽性能赋予聚酯和染料两者显着的稳定性 。