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Modified aldehyde-ketone resin as well as preparation method and application thereof

A technology of aldehyde and ketone resin and aldehyde and ketone resin, applied in the field of aldehyde and ketone resin, to achieve high economic benefits, excellent comprehensive performance, and excellent initial drying effect

Active Publication Date: 2016-05-04
CHANGXING PHOTOELECTRIC MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortcomings of the existing common aldehyde and ketone resins in the light-curing coating system, the first purpose of the present invention is to provide a kind of aldehyde and ketone resin terminal group to introduce more unsaturated bonds, which is beneficial to ensure the light curing speed and production efficiency Modified aldehyde and ketone resin

Method used

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  • Modified aldehyde-ketone resin as well as preparation method and application thereof
  • Modified aldehyde-ketone resin as well as preparation method and application thereof
  • Modified aldehyde-ketone resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In the reactor, drop into 43.05 parts of methacrylic acid, 2.58 parts of p-toluenesulfonic acid, 84.93 parts of dichloromethane, hydroquinone, gac and 50 parts of silica gel (Guangzhou Chemical Reagent Factory), obtain mixture, control hydroquinone and The contents of activated carbon in the mixture are 200ppm and 150ppm respectively; and fully mixed and stirred evenly; slowly start steam heating, control the heating speed to make the vapor pressure at 0.3Mpa, raise the temperature to 85°C within 1.5h, and maintain this temperature and stir for 20 Minutes; gradually add 33.53 parts of dimethylol propionic acid into the reactor, complete feeding within 3 hours and reflux reaction for 3.5 hours; continue steam heating, keep the steam pressure of the reactor at 0.4Mpa, raise the temperature to 110°C within 1 hour, and mix thoroughly Stir for 30 minutes; dissolve the aldehyde and ketone resin solution with dichloromethane in advance (the aldehyde and ketone resin is KR-120 f...

Embodiment 2

[0053] Put 36.03 parts of acrylic acid, 2.40 parts of methanesulfonic acid, 92.14 parts of toluene, 300 ppm of p-hydroxyanisole, 200 ppm of activated carbon and 40 parts of silica gel (Guangzhou Chemical Reagent Factory) into the reaction kettle, and fully mix and stir; slowly start steam heating , control the heating rate so that its vapor pressure is at 0.5Mpa, raise the temperature to 90°C within 1.5h, and keep stirring at this temperature for 40 minutes; gradually add 29.86 parts of N-[tris(hydroxymethyl)methyl]glycine to the reaction kettle In the middle, the feeding is completed within 3 hours and the reaction is refluxed for 3 hours; the steam heating is continued to keep the vapor pressure of the reactor at 0.7Mpa, and the temperature is raised to 120°C within 1 hour, and fully mixed and stirred for 35 minutes; the aldehyde and ketone resin solution (aldehyde The ketone resin is KR-130 of Changsha Changtai Company; the hydroxyl value is 104mgKOH / g, Mn~1400g / mol; in the ...

Embodiment 3

[0059] Put 36.03 parts of acrylic acid, 1.44 parts of methanesulfonic acid, 73.10 parts of dimethylformamide, 150 ppm of hydroquinone, 350 ppm of activated carbon and 50 parts of silica gel (Guangzhou Chemical Reagent Factory) into the reaction kettle, and fully mix and stir; Start steam heating, control the heating speed so that the vapor pressure is 0.3Mpa, raise the temperature to 90°C within 1.5h, and keep stirring at this temperature for 40 minutes; gradually add 33.53 parts of dimethylolpropionic acid into the reaction kettle, within 3h Complete the feeding and reflux reaction for 5 hours; continue steam heating to keep the vapor pressure of the reactor at 0.5Mpa, raise the temperature to 105°C within 1 hour, and fully mix and stir for 35 minutes; dissolve the aldehyde and ketone resin solution (aldehyde The ketone resin is KR-130 of Changsha Changtai Company; hydroxyl value 104mgKOH / g, Mn~1400g / mol; in the structural formula, R1, R2, R3 are all H, and n is 9; the solutio...

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Abstract

The invention discloses modified aldehyde-ketone resin as well as a preparation method and an application thereof. According to the preparation method, double-bond-containing carboxylic acid, a catalyst, a solvent, a polymerization inhibitor, a decolorizing agent and a solid water absorbent are added to a reaction kettle firstly and uniformly stirred, steam heating and thermal insulation are performed, polybasic hydroxycarboxylic acid is added, and the mixture has a reflux reaction; a aldehyde-ketone resin solution is added, and the mixture has a reflux reaction; washing, layering and suction filtration are performed, the solvent is removed, and the modified aldehyde-ketone resin is obtained. The modified aldehyde-ketone resin is added to light-cured resin and monomers, a photoinitiator is added, the mixture is uniformly stirred, and photo-cured coating composition can be obtained. The prepared modified ketone-aldehyde resin has higher double-bond content, a coating film of a resin system can obtain higher crosslinking density after photocuring, and the cured coating film has excellent oil resistance, ageing resistance and solvent resistance.

Description

technical field [0001] The invention relates to aldehyde and ketone resins, in particular to a modified aldehyde and ketone resin and a preparation method thereof. The modified aldehyde and ketone resin can be applied to light-cured coatings. The introduction of more unsaturated bonds can better participate in the chemical crosslinking of the coating film, and the prepared coating film has more excellent oil resistance, chemical resistance and solvent resistance, and can be widely used in various electronics, printing and packaging Materials, inks and adhesives and other fields. Background technique [0002] The molecular structure of ketone aldehyde resin contains carbonyl group, and the end group is hydroxyl group. It has good compatibility with resin and solvent used in coatings, has good wetting and dispersing effect on pigments, and can effectively improve the initial drying, adhesion, and Hardness, gloss and other properties, so that the formed paint film has good oil...

Claims

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Application Information

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IPC IPC(8): C08G6/02C09D7/12C09D163/10C09D175/14
CPCC09D163/10C09D175/14C08G6/02C08L61/02
Inventor 杨明雄林耿弘郑裕正周婵华涂伟萍卢明
Owner CHANGXING PHOTOELECTRIC MATERIAL
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