摘要:
In one aspect of the present invention, a UV-protective coating composition is described. The UV protective coating composition includes an acrylate polymer; and a non-crystallizing UV-absorber composition. The non-crystallizing UV absorber composition includes a dibenzoylresorcinol and at least one triazine compound. The dibenzoylresorcinol is present at a level in the range of from about 10 weight percent to about 25 weight percent, based on the total weight of the coating composition. Also provided is an article that includes the UV protective coating composition, and a method to protect the article.
摘要:
A thermoplastic composition includes particular amounts of a poly(arylene ether), a hydrogenated block copolymer, a plasticizer, a white pigment, and an ultraviolet radiation stabilizer. The composition exhibits excellent light stability, and it is particularly useful for forming white or off-white cable insulation.
摘要:
A thermoplastic composition includes particular amounts of a poly(arylene ether), a hydrogenated block copolymer, a copolymer of ethylene and an alpha-olefin, a plasticizer, a white pigment, and an ultraviolet radiation stabilizer. The composition exhibits excellent light stability, and it is particularly useful for forming white or off-white cable insulation.
摘要:
Copolymers including structural units derived from α-methylene-γ-butyrolactone, styrene, methyl methacrylate and, optionally, acrylonitrile, may be used as protective layers in multilayer articles that include UV sensitive substrate materials. The multilayer articles may also include a silicone hardcoat.
摘要:
Disclosed herein are high refractive index monomers that are curable by ultraviolet light. These monomers may be a component of curable compositions useful in the preparation of optical articles. Also disclosed is a method of synthesizing the monomers.
摘要:
Methods for preparing novel dibenzoylresorcinol-based compounds are disclosed, wherein the dibenzoylresorcinol is bonded to the residue of either an alcohol or a carboxylic acid group, via a methylene carboxylate linking group; and wherein the dibenzoylresorcinol is bonded directly to a substituted or unsubstituted aryl group which does not include a pendent hydroxyl group. The groups attached to the dibenzoylresorcinol may contain a wide variety of functional sites which permit further reaction, e.g., copolymerization. The described compounds are very useful as UV light absorbers and may be used to form improved coating compositions which usually include a transparent, polymeric matrix material. The coating compositions may be applied to various substrates, e.g., thermoplastics, to afford a selection of enhanced properties, such as UV light resistance and abrasion resistance.
摘要:
Weatherable polycarbonate compositions (formulations or blends) comprise at least one of a piperazinone and piperazine dione based HALS, and polyether based. The combination of these HALS and polyether based polymers exhibits a synergy that results in enhanced protection of the polycarbonate compositions by imparting photostability to the polycarbonate formulations, thereby reducing yellowing or other forms of light induced degradation.
摘要:
Weatherable polycarbonate compositions (formulations or blends) comprise at least one of a piperazinone and piperazine dione based HALS, and at least one of a benzotriazole, benzophenone, triazine, oxanilide, and cyanoacrylate based UVA. The combination of these HALS and UVA exhibits a synergy that results in enhanced protection of the polycarbonate compositions by imparting photostability to the polycarbonate formulations, thereby reducing yellowing or other forms of light induced degradation.
摘要:
An improved method of making methylene-bridged 4,6-dibenzoylresorcinol dimers in a single step in high yield quantities is provided. The method heats a 4,6-dibenzoylresorcinol (DBR) with a para-aldehyde or an aromatic aldehyde in a carboxylic acid solvent in the presence of a strong acid catalyst.
摘要:
The invention relates to a material which comprises at least 20% of polyphenylene ether and which comprises as a flame-retardant 0.05-10% by weight of a boron compound, for example, boric acid, B.sub.2 O.sub.3, borate, salts or borate esters related to the polyphenylene ether, as well as optionally a plasticiser and further conventionally used additives.
摘要翻译:本发明涉及包含至少20%的聚苯醚的材料,其包含0.05-10重量%的硼化合物的阻燃剂,例如硼酸,B 2 O 3,硼酸盐,与硼酸盐相关的盐或硼酸酯 聚苯醚,以及任选的增塑剂和进一步常规使用的添加剂。