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Copper phthalocyanine derivative prepared by introducing different groups of copper phthalocyanine molecules①Chloromethylated copper phthalocyanine CuPc- (CH2Cl), which has anti-crystallization properties, reacts with nitrogen compounds with active hydrogen of varying molecular weight and different structures to form copper phthalocyanine derivatives. A pigment composition prepared by mixing a cyanine pigment can improve the fluidity and anti-flocculation of coatings and inks. ② Copper phthalocyanine reacts with formaldehyde to form methylol ...
Chlorosulfonic acid clean production process of phthalocyanine green pigment2019-11-07According to the theory and thinking mode of cleaner production, the production process of phthalocyanine green pigment chlorosulfonic acid method was improved. By changing the catalyst, optimizing the synthesis process, reducing the pollution source, and recycling the waste water, the pollution was effectively controlled, and the clean production of phthalocyanine green pigment was basically realized. Adopting cleaner production technology, the discharge of waste water is reduced by 83.64%, and pollution ...Permanent Violet is prepared from N-ethylcarbazole with mixed acid nitration and sodium sulfide reduction. It is condensed with trichlorobenzene and tetrachlorobenzoquinone, and then closed and oxidized in p-toluenesulfonyl chloride, and then filtered, dried, and pulverized. And make a product. Products require the appearance of dark green light purple powder, light resistance 7-8 grade, heat resistance 200 ℃, oil absorption 38%, acid resistance (5% HCl) and ...Using terephthaloyl chloride and diethylenetriamine as wall materials, modified phthalocyanine green G pigment was dispersed in tetrachloroethylene as a capsule core, and polyamide-coated phthalocyanine green microcapsules were prepared by interfacial polymerization. The effects of emulsifier type and dosage, core-wall mass ratio, pH, and stirring speed on the particle size of polyamide microcapsules were investigated. Experimental results show that, with Span80, Tween8 ...The phthalocyanine green G pigment microcapsules with urea-formaldehyde resin as the capsule wall were prepared by in-situ polymerization method, and the polycondensation reaction process under acid catalysis was selected; using NH4Cl instead of organic acid as an acidic catalyst was beneficial to lower the pH value and the reaction was easy to control. The acidification time is appropriately extended, the endpoint pH value is low, the particle size of the microcapsules is small, the particle size distribution is uniform, and the microcapsules are compact and firm. optimized...
Permanent Purple R 2019-11-07Permanent Violet R is currently recognized as a **** purple purple organic pigment with different properties. It uses carbazole as the raw material to obtain the crude solid purple product through alkylation, nitration, reduction, condensation, and ring closure. Alkylation replaces high-pressure alkylation, which not only reduces the investment of the product, but also greatly improves the safety of production. It has the production level of crude products in the 1980s abroad through special commercialization technology ...
Preparation of Phthalocyanine Green G MicrocapsulesTake a certain amount of phthalocyanine green G and dissolve it in toluene, add distilled water, and use styrene-maleic acid as a dispersing emulsifier. In the emulsifier, homogenize at a speed of 10000r / min-12000r / min for 10-20 O / W type emulsion is formed in minutes; the pulse-formaldehyde prepolymer is mixed with the emulsion, and the catalyst is added in batches to make the medium ...Total number of records 7 pages 1
Violet BLJ (1-3) pigment
Violet BLN (1-3) pigment