Method for synthesizing modified epoxy acrylate

An epoxy acrylate and synthesis method technology, which is applied in the coating field in the chemical industry, can solve the problems of unstable product performance, poor pigment wettability, cumbersome synthesis method, etc., and achieve excellent yellowing resistance and pigment wettability Good, fast curing effect

Inactive Publication Date: 2012-10-03
HUIZHOU CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing epoxy resins have problems such as poor anti-yellowing, poor flexibility, poor pigment wettability, and slow curing speed.
Modified epoxy acrylate is a base resin widely used in UV coatings. It has the same or similar physical properties as standard epoxy resins. It is superior to ordinary standard epoxy resins in terms of surface brightness, yellowing resistance and shrinkage resistance. Widely used in wood coatings, plastic paint spraying, ink and paper glazing, etc. to UV coatings and UV printing ink systems, but the existing synthesis methods are cumbersome, environmental protection is not good, and product performance is not stable

Method used

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  • Method for synthesizing modified epoxy acrylate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, in a four-necked flask equipped with a stirrer, a thermometer, a constant pressure dropping funnel, and a condenser, add 110 g of hydroxyethyl acrylate, 146 g of hexahydrophthalic anhydride, 0.5 g of p-hydroxyanisole, and 1 g of triphenylphosphine. Hypophosphorous acid 0.5g, slowly raise the temperature to keep the material temperature at 95~100°C, keep it warm at this temperature for 2.5 hours, take samples to measure AV, raise the temperature to 105°C and keep it warm until AV≤220. After the AV is qualified, cool down to 100°C, add 200g of epoxy resin, 1g of triphenylphosphine, and 0.5g of p-hydroxyanisole, slowly raise the temperature to 105°C and keep it for 2 hours, then raise the temperature to 110~115°C and keep it for 2 hours, then take a sample to measure AV , until AV≤5. After the AV is qualified, the temperature is lowered to below 95°C, and a benzenetripropylene glycol diacrylate-free 110g , stir evenly, cool down to 80°C, filter and pack with a 100-...

Embodiment 2

[0024] First, in a four-necked flask equipped with a stirrer, a thermometer, a constant pressure dropping funnel, and a condenser, add 110 g of hydroxyethyl acrylate, 144 g of tetrahydrophthalic anhydride, 0.5 g of p-hydroxyanisole, and 1 g of triphenylphosphine. Hypophosphorous acid 0.5g, slowly raise the temperature so that the temperature of the material is 95~100°C, keep it warm at this temperature for 2 hours, take a sample to measure AV, raise the temperature to 105°C and keep it until AV≤220. After the AV is qualified, cool down to 100°C, add 200g of epoxy resin, 1g of triphenylphosphine, and 0.5g of p-hydroxyanisole, slowly raise the temperature to 105°C and keep it for 2 hours, then raise the temperature to 110~115°C and keep it for 2 hours, then take a sample to measure AV , until AV≤5. After the AV is qualified, the temperature is lowered to below 95°C, and a benzenetripropylene glycol diacrylate-free 110g , stir evenly, cool down to 80°C, filter and pack with a 10...

Embodiment 3

[0026] First, in a four-neck flask equipped with a stirrer, a thermometer, a constant pressure dropping funnel, and a condenser, add 115 g of hydroxyethyl acrylate, 144 g of tetrahydrophthalic anhydride, 0.5 g of p-hydroxyanisole, and 1 g of triphenylphosphine. Hypophosphorous acid 0.5g, slowly raise the temperature so that the temperature of the material is 95~100°C, keep it warm at this temperature for 2 hours, take a sample to measure AV, raise the temperature to 105°C and keep it until AV≤220. After the AV is qualified, cool down to 100°C and add 210g of epoxy resin, 1g of triphenylphosphine, 0.5g of p-hydroxyanisole, and 0.5g of hypophosphorous acid, slowly raise the temperature to 105°C for 2 hours, then raise the temperature to 110~115°C for 2 hours Hours, take samples to measure AV until AV≤5. After the AV is qualified, the temperature is lowered to below 95°C, and a benzene-tripropylene glycol diacrylate-free 11 5g , stir evenly, cool down to 80°C, filter and pack wi...

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Abstract

The invention discloses a method for synthesizing modified epoxy acrylate. The method comprises the steps of: A, adding 18-22 parts by weight of reactive diluent, 20-30 parts by weight of anhydride, 0.1-0.3 part by weight of inhibitor, 0.1-0.2 part by weight of catalyst and 0.2-0.4 part by weight of antioxidant into a synthesizer; B, cooling the mixture obtained in the step A to 100 plus or minus 2 DEG C, adding 30-40 parts by weight of epoxy resin, 0.1-0.3 part by weight of catalyst, 0.1-0.3 part by weight of inhibitor and 0.1-0.2 part by weight of antioxidant, heating the mixture to 105 plus or minus 2 DEG C and carrying out heat insulation for 2 plus or minus 0.5 hours, then heating to 110-115 DEG C and carrying out heat insulation for 2 plus or minus 0.5 hours until AV is not larger than 10; and C, cooling the mixture which is obtained in the step B to below 95 DEG C, then adding 15-25 parts by weight of non-benzene activated monomer, uniformly stirring the mixture and cooling to 80 plus or minus 2 DEG C. The product which is obtained by the method has good performance and high environmental friendliness..

Description

technical field [0001] The invention relates to a coating in the chemical industry, in particular to a method for synthesizing modified epoxy acrylate. Background technique [0002] Existing epoxy resins have problems such as poor anti-yellowing, poor flexibility, poor pigment wettability, and slow curing speed. Modified epoxy acrylate is a base resin widely used in UV coatings. It has the same or similar physical properties as standard epoxy resins. It is superior to ordinary standard epoxy resins in terms of surface brightness, yellowing resistance and shrinkage resistance. Widely used in wood coatings, plastic paint spraying, ink and paper glazing, etc. to UV coatings and UV printing ink systems, but the existing synthesis methods are cumbersome, environmental protection is not good, and product performance is not stable. Contents of the invention [0003] Aiming at the above-mentioned technical defects, the present invention provides a method for synthesizing modified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/16C09D163/10
Inventor 蒋爱香
Owner HUIZHOU CHANGRUNFA PAINT
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