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Reactive color paste and preparation method thereof

A reactive, colorant technology, applied in the field of ink colorants and coatings, can solve the problems of unstable colorant system, easy formation of agglomeration and sedimentation, and the appearance of pigment particles, achieving excellent storage stability, avoiding sedimentation, and improving stirring speed. Effect

Inactive Publication Date: 2020-05-08
DONGLAI COATING TECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of color paste system formed by physical and mechanical action is unstable, the storage time is short, and it is easy to form agglomeration and sedimentation, which causes various problems in paints and inks using these color pastes, such as floating color, blooming, and appearance. pigment particles etc.

Method used

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  • Reactive color paste and preparation method thereof
  • Reactive color paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The aminated pigment in the reaction color paste is an aminated carbon nanotube, which is prepared by the following method:

[0035] (1) Surface modification of carbon nanotubes: ultrasonically disperse carbon nanotubes in solvent toluene, add initiator azobisisobutyronitrile, protect with nitrogen gas for 20 minutes, and then initiate reaction at 60°C for 90 minutes Then filter and separate, and wash with solvent toluene 3-5 times, obtain the carbon nanotube of surface modification; Wherein, the mass volume ratio of carbon nanotube, solvent and initiator is 20mg:2g:50ml, the frequency of ultrasonic is 30kHz, The time is 30 minutes; the filtration adopts polyvinylidene fluoride membrane or polytetrafluoroethylene membrane with a pore size of 0.30-0.60 μm;

[0036] (2) The surface-modified carbon nanotubes are hydrolyzed: the surface-modified carbon nanotubes are added in hydrochloric acid of 0.5mol / L, refluxed for 90min, then filtered and separated, and washed 3-5 times...

Embodiment 2

[0043] The aminated pigment in the reaction color paste is aminated carbon black, which is prepared by the following method:

[0044] (1) Surface modification of carbon black: ultrasonically disperse the carbon black in the solvent toluene, add the initiator azobisisobutyronitrile, protect with nitrogen gas for 20 minutes, and then carry out the initiation reaction at 60 ° C for 90 minutes; then Filter and separate, and wash with solvent toluene 3-5 times, obtain the carbon black of surface modification; Wherein, the mass volume ratio of carbon black, solvent and initiator is 20mg:2g:50ml, the frequency of ultrasonic is 30kHz, and the time is 30min; Filtration adopts polyvinylidene fluoride membrane or polytetrafluoroethylene membrane with a pore size of 0.30-0.60 μm;

[0045] (2) The surface-modified carbon black is hydrolyzed: the surface-modified carbon black is added in the sodium hydroxide of 0.5mol / L, refluxed for 90min, then filtered and separated, and washed 3-5 times ...

Embodiment 3

[0052] The aminated pigment in the reaction color paste is aminated carbon black, which is prepared by the following method:

[0053] (1) Surface modification of carbon black: ultrasonically disperse the carbon black in the solvent toluene, add the initiator azobisisobutyronitrile, protect with nitrogen gas for 40 minutes, and then carry out the initiation reaction at 80 ° C for 150 minutes; then Separated by filtration, and washed 3-5 times with solvent toluene to obtain surface-modified carbon black; wherein, the mass volume ratio of carbon black, solvent and initiator is 35mg:20g:50ml, the frequency of ultrasound is 90kHz, and the time is 60min; Filtration adopts polyvinylidene fluoride membrane or polytetrafluoroethylene membrane with a pore size of 0.30-0.60 μm;

[0054] (2) The surface-modified carbon black is hydrolyzed: the surface-modified carbon black is added in 2mol / L sodium hydroxide, refluxed for 150min, then filtered and separated, and washed 3-5 times with deio...

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Abstract

The invention relates to a reactive color paste and a preparation method thereof. The reactive color paste is prepared from, by weight, a styrene-maleic anhydride copolymer, an aminated pigment and adiluent, wherein the addition amounts of the styrene-maleic anhydride copolymer and the aminated pigment enable the molar weight ratio of maleic anhydride to amino groups to be 1:1 to 1:2, and the addition amount of the diluent adjusts the viscosity range to be 20-100 s. The preparation method comprises the following steps: uniformly stirring and mixing the styrene-maleic anhydride copolymer and the aminated pigment in the presence of the diluent; and heating to 90-150 DEG C, and reacting for 2.0-6.0 h to obtain the reactive color paste. Compared with like products in the prior art, the colorpaste of the invention has the advantages of good storage stability, and good dispersibility and color development for other pigments and fillers, can form a color paste system with good performance,and can be widely applied to the fields of coatings and printing inks.

Description

technical field [0001] The invention relates to the field of paint and ink color paste, in particular to a reactive color paste and a preparation method thereof. Background technique [0002] At present, with the development of technology and industry, products such as coatings and inks have almost strict requirements on color, which relies on high-performance colorants. The traditional colorant dispersion process is to fully disperse pigments and dispersants in organic solvent media Grind to form a homogeneous color paste. However, this kind of color paste system formed by physical and mechanical action is unstable, the storage time is short, and it is easy to form agglomeration and sedimentation, which causes various problems in paints and inks using these color pastes, such as floating color, blooming, and appearance. Pigment particles and more. [0003] For the hyperdispersant of styrene-maleic anhydride system, because styrene has a benzene ring structure, it has a go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C09D11/037C09D7/62C09D7/65B01F15/00C09C1/44C09C1/56C09C3/08C09C3/06C09C3/04
CPCC09D17/005C09D17/004C09D17/002C09D11/037C09D7/62C09D7/65C09C1/44C09C1/56C09C3/08C09C3/06C09C3/04C09C3/006B01F35/221422B01F35/2215B01F2101/30
Inventor 朱忠敏叶小明宗德超
Owner DONGLAI COATING TECH SHANGHAI
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