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 o

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

Example Embodiment

[0046] Example 1

[0047] Put 43.05 parts of methacrylic acid, 2.58 parts of p-toluenesulfonic acid, 84.93 parts of methylene chloride, 50 parts of hydroquinone, activated carbon and silica gel (Guangzhou Chemical Reagent Factory) into the reactor to obtain a mixture to control hydroquinone and The content of activated carbon in the mixture is 200ppm and 150ppm respectively; and mix well and stir evenly; slowly start steam heating, control the heating speed to make the steam pressure at 0.3Mpa, heat up to 85℃ within 1.5h, and keep this temperature stirring for 20 Minutes; add 33.53 parts of dimethylolpropionic acid to the reactor gradually, complete the feeding within 3h and reflux reaction for 3.5h; continue steam heating, make the vapor pressure of the reactor at 0.4Mpa, heat up to 110℃ within 1h, and mix thoroughly Stir for 30 minutes; the aldehyde and ketone resin solution dissolved in dichloromethane (the aldehyde and ketone resin is KR-120 of Changsha Changtai Company; the ...

Example Embodiment

[0052] Example 2

[0053] Put 36.03 parts of acrylic acid, 2.40 parts of methanesulfonic acid, 92.14 parts of toluene, 300ppm of p-hydroxyanisole, 200ppm of activated carbon, and 40 parts of silica gel (Guangzhou Chemical Reagent Factory) into the reaction kettle, and mix and stir well; slowly start steam heating , Control the heating speed to make the vapor pressure at 0.5Mpa, raise the temperature to 90℃ within 1.5h, and keep this temperature for 40 minutes; add 29.86 parts of N-[tris(hydroxymethyl)methyl]glycine to the reactor gradually In 3 hours, complete the feeding and reflux reaction for 3 hours; continue steam heating, make the steam pressure of the reactor at 0.7Mpa, raise the temperature to 120°C within 1 hour, and fully mix and stir for 35 minutes; add the aldehyde ketone resin solution (aldehyde The ketone resin is KR-130 from Changsha Changtai Company; the hydroxyl value is 104mgKOH / g, Mn~1400g / mol; in the structural formula, R1, R2, R3 are all H, n is 9; the soluti...

Example Embodiment

[0058] Example 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 reactor, and mix well and stir evenly; Start the steam heating, control the heating speed to make the steam pressure at 0.3Mpa, raise the temperature to 90℃ within 1.5h, and keep this temperature for 40 minutes; add 33.53 parts of dimethylolpropionic acid to the reaction kettle gradually, within 3h Complete the feeding and reflux reaction for 5h; continue steam heating, make the steam pressure of the reactor at 0.5Mpa, raise the temperature to 105℃ within 1h, and mix and stir well for 35 minutes; add the aldehyde ketone resin solution (aldehyde The ketone resin is KR-130 from Changsha Changtai Company; the hydroxyl value is 104mgKOH / g, Mn~1400g / mol; in the structural formula, R1, R2, R3 are all H, n is 9; the solution concentrat...

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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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