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Preparation method of anti-aging moisture-curing vinyl resin

A vinyl resin and moisture curing technology, which is applied in the field of preparation of anti-aging moisture curing vinyl resin, can solve the problems of insufficient resin curing degree, difficult resin curing, soft resin without hardness, etc., and achieve high strength and stable dispersion The effect of improving sex and increasing water loss

Active Publication Date: 2018-04-17
长兴合成树脂(常熟)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The curing process is greatly affected by moisture. When the resin contains a certain amount of moisture, it will make it difficult to cure the resin. The main performance is that the degree of resin curing is not enough, the resin is soft and has no hardness, and it is easy to yellow and powder.

Method used

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  • Preparation method of anti-aging moisture-curing vinyl resin

Examples

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Comparison scheme
Effect test

example 1

[0028] Take 16g of 3-aminophenol, 10g of ethyl acetoacetate, 17g of zinc chloride and 70mL of absolute ethanol, place them in a three-necked flask with a stirrer and a condensing reflux tube, heat up to 70°C under nitrogen protection, and start the stirrer Insulate and stir at a speed of 400r / min, condense and reflux for 14 hours, and naturally cool to room temperature to obtain a reaction solution; add 60mL of hydrochloric acid with a mass fraction of 10% to the reaction solution, stir and mix for 10min, filter and remove the filtrate to obtain a solid product, and use distilled water After washing the solid product 3 times, put it in an oven, heat it up to 60°C, and dry it for 8 hours to obtain a dry product. Recrystallize the dry product with 70 mL of isopropanol to obtain coumarin crystals; take 8 g of coumarin crystals , 10g of 2,3-epoxypropyltrimethylammonium chloride and 40mL of hydrochloric acid with a mass fraction of 20% were placed in a three-necked flask with a stir...

example 2

[0030] Take 20g of 3-aminophenol, 12g of ethyl acetoacetate, 20g of zinc chloride and 80mL of absolute ethanol, place them in a three-necked flask with a stirrer and a condensing reflux tube, heat up to 80°C under nitrogen protection, and start the stirrer Insulate and stir at a speed of 450r / min, condense and reflux for 16 hours, and naturally cool to room temperature to obtain a reaction solution; add 80 mL of hydrochloric acid with a mass fraction of 10% to the reaction solution, stir and mix for 15 minutes, filter and remove the filtrate to obtain a solid product, and use distilled water After washing the solid product 4 times, put it in an oven, heat it up to 70°C, and dry it for 9 hours to obtain a dry product. Recrystallize the dry product with 75 mL of isopropanol to obtain coumarin crystals; take 10 g of coumarin crystals , 12g of 2,3-epoxypropyltrimethylammonium chloride and 50mL of hydrochloric acid with a mass fraction of 20% were placed in a three-necked flask with...

example 3

[0032] Take 18g of 3-aminophenol, 11g of ethyl acetoacetate, 18g of zinc chloride and 75mL of absolute ethanol, place them in a three-necked flask with a stirrer and a condensing reflux tube, heat up to 75°C under nitrogen protection, and start the stirrer Insulate and stir at a speed of 430r / min, condense and reflux for 15 hours, and naturally cool to room temperature to obtain a reaction solution; add 75mL of hydrochloric acid with a mass fraction of 10% to the reaction solution, stir and mix for 13 minutes, filter and remove the filtrate to obtain a solid product, and use distilled water After washing the solid product 4 times, put it in an oven, heat it up to 65°C, and dry it for 9 hours to obtain a dry product. Recrystallize the dry product with 73 mL of isopropanol to obtain coumarin crystals; take 9 g of coumarin crystals , 11g of 2,3-epoxypropyltrimethylammonium chloride and 45mL of hydrochloric acid with a mass fraction of 20% were placed in a three-necked flask with a...

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Abstract

The invention discloses a preparation method of anti-aging moisture-curing vinyl resin and belongs to the technical field of resin preparation. Cumarin prepared in the method is high in fluorescence quantum yield and stability, so that impact of ultraviolet radiation on the vinyl resin is lowered. In addition, cumarin has high antioxidation performance, and increase of crosslinking degree lowers aging degradation ability of the vinyl resin, so that the defect that the vinyl resin is prone to yellowing and pinking is improved, and anti-aging effect is realized. A PAE intermediate can polymerizeand generate a PAE emulsion during preparation of the vinyl resin and can be in covalent bond combining with hydroxyl in epoxy resin to form a crosslinked structure in the vinyl resin, so that dispersion stability of the PAE emulsion during curing is improved; after the PAE emulsion is modified through diethanol amine, molecular weight of PAE is lowered, which leads to decrease of viscosity of the emulsion, so that water loss of the vinyl resin in a humid condition during curing is intensified, the vinyl resin can maintain high strength after curing without being softened, and the vinyl resinhas wide application prospect.

Description

technical field [0001] The invention discloses a preparation method of an anti-aging moisture-cured vinyl resin, belonging to the technical field of resin preparation. Background technique [0002] Vinyl resin is a kind of modified epoxy resin obtained by reacting bisphenol-type or novolac-type epoxy resin with methacrylic acid. It is usually called vinyl ester resin, also known as epoxy acrylic resin, and is a thermosetting resin. Vinyl ester resin inherits the excellent characteristics of epoxy resin, and has better curability and moldability, and can be dissolved in styrene and acrylic monomers. [0003] Vinyl resin is a kind of unsaturated polyester resin. The basic vinyl ester resin with the largest amount is bisphenol A synthesized by ring-opening addition of bisphenol A epoxy resin and carboxyl-containing vinyl monomer. Epoxy acrylate. After the solid or semi-solid bisphenol A epoxy acrylate is diluted with about 40% diluent, the free radical copolymerization reacti...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/00
Inventor 龙海燕何少雄陈可
Owner 长兴合成树脂(常熟)有限公司
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