Condensation polymer containing the residue of a poly-methine compound and shaped articles produced therefrom
申请人:EASTMAN CHEMICAL COMPANY
公开号:EP0273280A2
公开(公告)日:1988-07-06
Composition useful for molding into articles which as food containers, beverage bottles, cured structural plastics and the like comprising molding grade linear or unsaturated polyester or polycarbonate having reacted therewith or copolymerized therein the residue of one or more poly-methine compounds having the formula:
wherein
each R¹ is independently selected from cyano, carboxy, alkenyloxycarbonyl, or a substituted or unsubstituted alkoxycarbonyl, cycloalkoxoycarbonyl or aryloxycarbonyl radical;
each R² is independently selected from one of the groups specified for R¹ or an unsubstituted or substituted aryl, carbamoyl, alkanoyl, cycloalkanoyl, aroyl, alkylsulfonyl, cycloalkylsulfonyl, arylsulfonyl or aromatic, heterocyclic radical;
each R³ is independently selected from hydrogen or an unsubstituted or substituted alkyl, cycloalkyl or aryl radical;
A¹ and A² are independently selected from 1,4-phenylene radicals; and
L is an organic linking group bonded by non-oxo carbon atoms to the oxygen atoms adjacent to L; provided the poly-methine compound bears at least one substituent that is reactive with one of the monomers from which the condensation polymer is derived.
The polymethine residues are present in the polymer as an integral part of the polymer chain and absorb ultraviolet radiation in the range of about 250 to about 390 nm. The residues are non-extractable from the polymer and stable at the conditions at which the polymers are manufactured and processed.
用于模塑食品容器、饮料瓶、固化结构塑料等物品的组合物,包括模塑级线性或不饱和聚酯或聚碳酸酯,与之反应或共聚的一种或多种具有以下式子的聚甲基化合物的残余物:
其中
每个 R¹ 独立选自氰基、羧基、烯氧羰基或取代或未取代的烷氧羰基、环烷氧羰基或芳氧羰基;
每个 R² 独立地选自 R¹ 所指定的基团之一或未取代或取代的芳基、氨基甲酰基、烷酰基、环烷酰基、芳基、烷基磺酰基、环烷基磺酰基、芳基磺酰基或芳香族杂环基;
每个 R³ 独立选自氢或未取代或取代的烷基、环烷基或芳基;
A¹ 和 A² 独立选自 1,4-亚苯基;以及
L 是通过非氧碳原子与邻近 L 的氧原子键合的有机连接基团;条件是聚亚胺化合物带有至少一个取代基,该取代基与产生缩聚聚合物的单体之一反应。
多亚甲基残基作为聚合物链的组成部分存在于聚合物中,可吸收约 250 至约 390 纳米范围内的紫外线辐射。这些残留物无法从聚合物中提取,并且在聚合物生产和加工条件下稳定存在。