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A kind of modified casein emulsion and its application

A casein and modified technology, which is applied in the field of paint and ink, can solve the problems of easy decolorization and anti-sticking of impregnated melamine glue, and easy bursting of composite plates, so as to achieve excellent comprehensive performance, improve flexibility and moisture resistance strength, and disperse The effect of stability improvement

Active Publication Date: 2020-11-24
上海欧畅新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application process of printing decorative paper of this kind of water-based resin, there are defects such as easy anti-sticking during high-temperature processing, easy discoloration when impregnated with melamine glue, and cracking when the composite board is cut.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] In a preferred embodiment, the preparation method of the modified casein comprises the following steps:

[0031] (1) Take 7.8g of glycidol and 31.5ml of triethylamine, and add 150ml of DMSO to dissolve; adjust the temperature of the system to -5 ~ 0°C, and take 7.4g of oxalyl chloride under an atmosphere of nitrogen gas, to less than 0.4 The speed of ml / min was added dropwise at a constant speed, and then incubated for 3 hours, then filtered, the filtrate was concentrated, and dried to obtain intermediate A;

[0032] (2) 2.0 g of intermediate A and 1.2 g of succinic acid were dissolved in 80 ml of DMSO, and 0.02 g of tetrabutylammonium bromide was added, and the system was heated to 120° C. for 4 hours and extracted to obtain intermediate B;

[0033] (3) Dissolve 12.8g of casein in water under alkaline conditions to obtain an aqueous solution of casein with a solid content of 10-20%, then add the intermediate B prepared in step (2) and mix evenly, , reacted at 140mbar ...

Embodiment 1

[0060] Embodiment 1 provides a kind of modified casein emulsion, described casein emulsion, by weight, comprises casein 3, thickener 0.4, gel factor 0.1, surfactant 0.1, defoamer 0.1, anticorrosion Agent 0.1, co-solvent 0.1, distilled water 80.

[0061] The casein is purchased from Sinopharm Chemical Reagent; the thickener is silicon dioxide; the gelling factor is caprolactam; the surfactant is 2,4,7,9-tetramethyl-5-decyne -4,7-diol; the defoamer is tributyl phosphate; the preservative is o-phenylphenol, and the CAS number is 90-43-7, purchased from McLean Chemicals; the cosolvent is ethylene glycol.

Embodiment 2

[0063] Embodiment 2 provides a kind of modified casein emulsion, described casein emulsion, by weight, comprises casein 7, thickener 1.0, gel factor 0.7, surfactant 0.5, defoamer 0.7, anticorrosion Agent 0.7, co-solvent 0.7, distilled water 95.

[0064] The casein is purchased from Sinopharm Chemical Reagent; the thickener is silicon dioxide; the gelling factor is caprolactam; the surfactant is 2,4,7,9-tetramethyl-5-decane Alkyne-4,7-diol; the defoamer is tributyl phosphate; the preservative is o-phenylphenol, the CAS number is 90-43-7, purchased from McLean Chemicals; the cosolvent for ethylene glycol.

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Abstract

The invention relates to the field of coating and ink, and in particular to a modified casein emulsion and application thereof. The modified casein emulsion is prepared from the following components:3 to 7 parts by weight of casein, 0.4 to 1.0 part by weight of thickening agent, 0.1 to 0.7 part by weight of gelator, 0.1 to 0.5 part by weight of surfactant, 0.1 to 0.7 part by weight of defoaming agent, 0.1 to 0.7 part by weight of preservative, 0.1 to 0.7 part by weight of cosolvent and 80 to 95 parts by weight of distilled water.

Description

technical field [0001] The invention relates to the field of coating inks, in particular to a modified casein emulsion and its application. Background technique [0002] Water-based printing ink has obvious environmental protection and safety characteristics because water is used as a solvent carrier. Such as non-toxic and harmless, non-flammable and non-explosive, low volatile organic compound content, can reduce harmful substances remaining on the surface of printed matter, reduce resource consumption and reduce environmental protection costs. Due to the improved safety of the working environment, it is gradually replacing solvent-based printing inks. In printing inks used in the decorative paper preparation industry, traditional water-based resins are mainly modified by low-molecular-weight acrylic resins dissolved in alkaline aqueous solutions and their emulsions. However, in the application process of this type of water-based resin for printing decorative paper, there...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L89/00C08H1/00C09D11/04C09D189/00
CPCC08H1/00C08J3/03C08J2389/00C09D11/04C09D189/005
Inventor 黄清根王正青顾汉康黄泽彬范海鹰
Owner 上海欧畅新材料科技有限公司
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