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Preparation method of high temperature and yellowing resistant alkali-soluble epoxy acrylate UV resin

A technology of epoxy acrylic acid and epoxy acrylic acid copolymer, which is applied in application, coating, ink, etc., can solve the problems of poor light aging resistance and yellowing resistance, constrained application, etc., and achieve high glass transition temperature and heat resistance Good performance, solvent resistance and excellent mechanical properties

Inactive Publication Date: 2014-10-08
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this type of alkali-soluble epoxy acrylate is mostly used in bisphenol A epoxy resin and novolak epoxy resin, which contain structures such as benzene rings, and have poor light aging resistance and yellowing resistance. Its yellowing performance is better, but its mechanical properties and heat resistance are far inferior to those of bisphenol A epoxy acrylic resin and novolac epoxy acrylic resin
The above defects restrict the application of this kind of resin, especially in the fields of white solder resist ink for LED aluminum substrate, anti-yellowing UV varnish, coating and ink, etc.

Method used

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  • Preparation method of high temperature and yellowing resistant alkali-soluble epoxy acrylate UV resin
  • Preparation method of high temperature and yellowing resistant alkali-soluble epoxy acrylate UV resin
  • Preparation method of high temperature and yellowing resistant alkali-soluble epoxy acrylate UV resin

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Embodiment 1

[0030] A preparation method of an alkali-soluble epoxy acrylic acid UV resin resistant to high temperature and yellowing, comprising the steps of:

[0031] (1) Synthesis of cycloaliphatic epoxy acrylic acid copolymer: first 25 parts of 3,4-epoxycyclohexyl methyl methacrylate, 10 parts of glycidyl methacrylate, 12 parts of hydroxyethyl methacrylate , 1 part of azobisisobutyronitrile, and 0.2 part of isooctyl 3-mercaptopropionate are put into a mixer and stirred evenly to obtain a mixed monomer; then, under the protection of protective gas, the reflux solvent propylene glycol methyl ether Stir and heat the reaction kettle with 53 parts of acetate to 85-100°C, add the above-mentioned mixed monomers dropwise, and complete the dropwise addition within 2 hours. Keep warm for 1.5 hours, and finally raise the temperature to 120-125° C. and reflux for 0.5 hours to obtain a terpolymer solution.

[0032] (2) Acrylic acid modification of cycloaliphatic epoxy acrylic acid copolymer: 100 p...

Embodiment 2

[0039] A preparation method of an alkali-soluble epoxy acrylic acid UV resin resistant to high temperature and yellowing, comprising the steps of:

[0040] (1) Synthesis of cycloaliphatic epoxy acrylic acid copolymer: first, 30 parts of 3,4-epoxycyclohexyl ethyl methacrylate, 12 parts of glycidyl methacrylate, and 10 parts of hydroxypropyl methacrylate , 0.8 part of azobisisobutyronitrile, and 0.5 part of n-dodecylmercaptan are put into a mixer, and stirred evenly to obtain a mixed monomer; Stir and heat the reaction kettle with 48 parts of ester to 85°C, add the above-mentioned mixed monomers dropwise, and complete the dropwise addition within 2 hours. , and finally raise the temperature to 120-125° C. and reflux for 0.5 hour to obtain a terpolymer solution.

[0041] (2) Acrylic acid modification of cycloaliphatic epoxy acrylic acid copolymer: take 100 parts of cycloaliphatic epoxy acrylic acid copolymer synthesized in step (1), adjust the temperature to 100°C, add polymeriz...

Embodiment 3

[0044] A preparation method of an alkali-soluble epoxy acrylic acid UV resin resistant to high temperature and yellowing, comprising the steps of:

[0045] (1) Synthesis of cycloaliphatic epoxy acrylic acid copolymer: first 20 parts of 3,4-epoxycyclohexyl methacrylate, 10 parts of glycidyl methacrylate, 15 parts of hydroxyethyl methacrylate, over Put 0.8 parts of benzoyl oxide and 0.2 parts of isooctyl 3-mercaptopropionate into a mixer, stir evenly to obtain mixed monomers; Stir and heat the reaction kettle with 55 parts of ester (DBE) to 98°C, add the above-mentioned mixed monomers dropwise, and complete the dropwise addition within 2 hours. Keep warm for 1.5 hours, and finally raise the temperature to 120-125° C. and reflux for 0.5 hours to obtain a terpolymer solution.

[0046] (2) Acrylic acid modification of cycloaliphatic epoxy acrylic acid copolymer: get 100 parts of cycloaliphatic epoxy acrylic copolymer synthesized in step (1), adjust the reaction temperature to 90°C...

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Abstract

The invention discloses a preparation method of a high temperature and yellowing resistant alkali-soluble epoxy acrylate UV resin. The preparation method comprises the following steps: carrying out free radical polymerization on an alicyclic epoxy acrylate monomer, glycidyl methacrylate, and hydroxyethyl methacrylate or hydroxypropyl methacrylate to prepare an alicyclic epoxy acrylate copolymer; reacting acrylic acid with an epoxy group in the above epoxy acrylate resin, and introducing a double bond to make the resin have photosensitive activity; and reacting acid anhydride with a hydroxy group, and introducing a carboxyl group to make the resin alkali-soluble in order to prepare the high temperature and yellowing resistant alkali-soluble epoxy acrylate UV resin with a carboxyl group. The glass transition temperature of the resin finally obtained in the invention is 65-100DEG C, and the finally obtained resin has the characteristics of good high temperature resistance, yellowing resistance, acid and alkali resistance of a curable film, solvent resistance, excellent mechanical performances and the like, and can be widely applied in yellowing resistant optical imaging solder resistant inks, photoresist, yellowing resistant UV inks and coatings, adhesion promoters, ink crosslinking agents and the like.

Description

technical field [0001] The invention relates to a UV resin in the chemical field, in particular to an alkali-soluble epoxy acrylic UV resin with high temperature resistance and yellowing resistance and a preparation method thereof. technical background [0002] Alkali-soluble UV resin is a kind of photosensitive resin that has been developed rapidly recently. Taking advantage of its alkali solubility, a variety of photo-imaging UV curing materials have been developed, and have been applied in the production of electronics and printing industries. Such as liquid photosensitive solder resist, liquid photosensitive resist, negative PS plate and flexographic plate, etc. Alkali-soluble photosensitive resins contain not only photosensitive groups, but also alkali-soluble groups such as carboxyl groups and sulfonic acid groups. Usually, the reaction of photosensitive resins with hydroxyl groups with acid anhydrides can introduce carboxyl groups, so as to obtain alkali-soluble UV ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/32C08F220/28C08F8/14C08F8/46C09D4/06C09D11/107C09D11/101
Inventor 任碧野伍佩铭胡景李景汉
Owner SOUTH CHINA UNIV OF TECH
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