Dyes, compositions comprising dyes and methods for using the same are provided.
染料、包含染料的组合物以及使用这些染料的方法。
CARBAZOLE DIOXAZINE PIGMENTS
申请人:GHARDA Keki Hormusji
公开号:US20160096849A1
公开(公告)日:2016-04-07
The present disclosure relates to a benzoyl substituted carbazole-dioxazine pigment and its preparation. The process involves benzoylation of 3-nitro-N-ethylcarbazole in monochlorobenzene using benzoylchloride and ferric chloride to yield 3-nitro-6-benzoyl-N-ethyl carbazole, which on catalytic hydrogenation and subsequent condensation with chloranil and cyclisation yields benzoyl substituted carbazole-dioxazine pigment.
The invention relates to a paste resin A which is a mixture of at least two acrylic copolymer resins A, wherein the acrylic copolymer resin A1 comprises at least one basic acrylic comonomer, and the acrylic copolymer resin A2 comprises at least one acidic acrylic comonomer, and a method of use thereof for formulating both water-borne and solvent-borne tinted paints with a wide variety of pigments.
A novel and efficient method for the synthesis of Pigment Violet 23 and triphenodioxazine (TPDO)-based derivatives has been developed through safe, low-cost iron-mediated and green air-assisted oxidative cyclization. Using this method, Pigment Violet 23 and a variety of substituted TPDO derivatives were afforded in good to excellent yields. The characteristic UV–vis absorption wavelength of our prepared
A process for producing poly(1,3-propylene terephthalate) from the reaction of either terephthalic acid or a lower dialkyl ester of terephthalic acid and 1,3-propanediol and polymerization of the monomer produced therefrom using a catalyst system. The catalyst composition includes employing an effective catalytic amount tin in the polycondensation reaction. Using the catalyst system and Hostaperm® pigments allows for the production of poly(1,3-propylene terephthalate) having yellowness of less than 4 and an IV of at least 0.80 dl/g.