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Benzoxazole and oxadiazole ultraviolet stabilizers

阅读:70发布:2023-09-28

专利汇可以提供Benzoxazole and oxadiazole ultraviolet stabilizers专利检索,专利查询,专利分析的服务。并且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.,下面是Benzoxazole and oxadiazole ultraviolet stabilizers专利的具体信息内容。

1. A COMPOSITION OF MATTER COMPRISING COMPOUNDS OF SEGMENTS A AND B OR A AND C WHEREIN SEGMENT A IS OF THE STRUCTURE:
2. The compound Alpha -(4-benzoyl-3-hydroxyphenoxy)2-p-tolylbenzoxazole of the formula
3. The compound 4-benzoyl-3-hydroxyphenyl-p-(2-benzoxazolyl)-benzoate of the formula
4. The compound 4-(2-benzoxazolyl)-4''-methoxy-2''-hydroxy benzophenone of the formula
5. The compound 3-(5-p-biphenylyl-1,3,4-oxadiazol-2-yl)-2''-hydroxy-4''-methoxybenzophenone of the formula
6. The compound 4((m-(5-p-biphenylyl-1,3,4-oxadiazol-2-yl)-benzyl)oxy)-2-hydroxybenzophenone of the formula
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