Pigment Yellow 139 or its derivatives wrapped in thermoplastic resin, its preparation method and its downstream products
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A technology of thermoplastic resin, pigment yellow, applied in the field of pigments
Active Publication Date: 2021-06-01
DONGGUAN UNIV OF TECH
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In addition, the EP424759 mentioned in this patent also uses a large amount of alcohol and alkali, and a large amount of waste liquid will still be produced after the reaction
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[0031] The preparation method of the thermoplastic resin-wrapped pigment yellow 139 or its derivatives of one embodiment, comprises the following steps:
[0032] Mix 1,3-diiminoisoindoline compounds, cyclic compounds containing meta-diketones, solid organic acids and thermoplastic resins, and extrude or knead to obtain Pigment Yellow 139 or its derivatives wrapped in thermoplastic resins things.
[0033] Wherein, the structure of 1,3-diiminoisoindoline compounds is shown in formula (I):
[0034] R1, R2, R3, and R4 are each independently H, halogen, C1-C4 alkyl or alkoxy.
[0035] The structure of the cyclic compound containing meta-diketone is shown in formula (II):
[0036] X are independently CH 2 Or NH, Y is C=O, S, CR5R6 or NR7, R5, R6, R7 are independently H, methyl, ethyl or benzyl.
[0037] Further, the cyclic compound containing meta-diketone is selected from one of the following compounds:
[0038] The definitions of R5, R6 and R7 are the same as above.
...
Embodiment 1
[0071]
[0072] Mix (20g, 138mmol) 1,3-diiminoisoindoline, (35g, 276mmol) barbituric acid, (6.6g, 34mmol) citric acid and 0.5kg of PMMA in a single-screw extruder Extrusion reaction, pelletizing, to obtain crude color masterbatch.
[0073] figure 1 The reflectance spectrogram of injection molding into sheet after mixing ABS for the color masterbatch crude product prepared in embodiment 1, by figure 1 It was found that the obtained plastic sheet was yellow.
Embodiment 2
[0075] Mix (20g, 138mmol) 1,3-diiminoisoindoline, (35g, 276mmol) barbituric acid, (6.6g, 34mmol) citric acid and 0.5kg of PP in a single-screw extruder Extrusion reaction, pelletizing, to obtain crude color masterbatch.
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Abstract
The application relates to thermoplastic resin-wrapped pigment yellow 139 or its derivatives, its preparation method and its downstream products. The method mixes 1,3-diiminoisoindoline compounds, cyclic compounds containing meta-diketones, solid organic acids and thermoplastic resins, and adjusts the amount of each raw material, and then utilizes the thermoplastic resin as a reaction dispersion medium. The good processing performance and other related physical properties of the resin enable their mixture to be extruded or kneaded to obtain Pigment Yellow 139 or its derivatives wrapped in thermoplastic resin in one step, because in the process of extrusion or kneading, Pigment Yellow 139 or its derivatives The product can be directly generated and evenly distributed in the thermoplastic resin, without adding any solvent during the reaction, and without separation and purification after the reaction, avoiding the generation of three wastes, greatly simplifying the process and reducing energy consumption.
Description
technical field [0001] The invention relates to the technical field of pigments, in particular to thermoplastic resin-wrapped pigment yellow 139 or its derivatives, its preparation method and its downstream products. Background technique [0002] C.I. Pigment Yellow 139, also known as Isoindoline Yellow, or Permanent Yellow 3R 1819, is a high-performance organic yellow pigment with strong tinting strength and good fastness. It is widely used in the coloring of printing inks and plastic products, especially Some high-performance industrial products. Usually, Pigment Yellow 139 is prepared by condensation reaction. 1,3-diiminoisoindoline and barbituric acid are reacted and filtered at 60°C to form crude Pigment Yellow 139 in an aqueous solution containing formic acid. The pure product of Pigment Yellow 139 can be obtained by recrystallization. Although the thermal stability limit temperature of Pigment Yellow 139 is 260°C, the stability of Pigment Yellow in plastic processin...
Claims
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