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High-solid low-viscosity hydroxy acrylic resin as well as preparation method and application thereof

A technology of sticky hydroxyl acrylic acid and hydroxyl acrylic acid, which is applied in the field of organic polymer synthesis, can solve the problems of increasing the complexity and difficulty of resin synthesis process, which is not conducive to the promotion and application of industrialization, and the high VOC content of coatings, and achieves excellent weather resistance and energy saving Effect of low cost and molecular weight

Active Publication Date: 2016-10-12
英德市佐桐化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of Cardura E10 is relatively large, the cost of the resin is relatively high, the viscosity is still relatively large at 3000-6000mPa·s, and the VOC content in coating construction is still high, which is not conducive to large-scale application
Chinese invention patent application CN 105038476A discloses a high-solid varnish type oily acrylic resin for automobiles and its preparation method, which requires self-made active diluent, which increases the complexity and difficulty of the resin synthesis process, which is not conducive to industrialization and application

Method used

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  • High-solid low-viscosity hydroxy acrylic resin as well as preparation method and application thereof
  • High-solid low-viscosity hydroxy acrylic resin as well as preparation method and application thereof
  • High-solid low-viscosity hydroxy acrylic resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-solid low-viscosity hydroxyl acrylic resin, comprising the following formula components in parts by weight as shown in the table:

[0036] Table 1

[0037]

[0038] The preparation method of the high-solid low-viscosity hydroxyl acrylic resin comprises the following steps:

[0039] (1) Synthesis of hydroxyacrylic resin: add the first part of solvent and butyl glycidyl ether into the reaction kettle, stir and heat up to 140°C; add the first part of initiator and chain transfer agent into the acrylic monomer mixture, Add dropwise to the reaction kettle within 6 hours, and keep warm for 0.5h after dropping; mix the remaining initiator and solvent and add it to the reaction kettle within 40 minutes, and keep warm for 1 hour after dropping. The first solvent was a mixture of xylene and ethyl acetate. The first solvent accounts for 50% of the total mass of the solvent; the first initiator accounts for 80% of the total mass of the initiator. Acrylic monomers inclu...

Embodiment 2

[0052] A kind of high-solid low-viscosity hydroxyl acrylic resin, comprises the raw material formulation component such as table 4 parts by weight:

[0053] Table 4

[0054]

[0055]

[0056] The preparation method of the high-solid low-viscosity hydroxyl acrylic resin specifically comprises the following steps:

[0057] (1) Synthesis of hydroxyacrylic resin: the first part of solvent and C 12-14 Add glycidyl ether (commercialized substance) into the reaction kettle, stir and heat up to 150°C; add 5 parts of the first initiator and chain transfer agent 2-mercaptoethanol to the acrylic acid monomer mixture, and add it dropwise to the reaction kettle within 3 hours. Kettle, keep warm for 1h after dropping; mix the remaining initiator and solvent and add it to the reaction kettle within 40min, keep warm for 2h after dropping. The first part of solvent accounts for 30% of the total mass of solvent; the first part of initiator accounts for 50% of the total mass of initiator...

Embodiment 3

[0069] A high-solid low-viscosity hydroxyl acrylic resin, comprising the raw material formulation components of the following table 7 parts by weight:

[0070] Table 7

[0071]

[0072] The preparation method of the high-solid low-viscosity hydroxyl acrylic resin comprises the following steps:

[0073] (1) Synthesis of hydroxyacrylic resin: 40% solvent and glycidyl tertiary carbonate are added to the reaction kettle, stirred and heated to 180°C; 70% initiator and chain transfer agent are added to the acrylic acid monomer mixture, Add dropwise to the reaction kettle within 3 hours, and keep warm for 0.5h after dropping; mix the remaining initiator and solvent and add it to the reaction kettle within 20 minutes, keep warm for 2 hours after dropping.

[0074] (2) Preparation of high-solid and low-viscosity hydroxyl acrylic resin: Add hydroxyl oligomers to the above resin, stir for 60 minutes, cool down and discharge to obtain high-solid and low-viscosity hydroxyl acrylic resi...

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Abstract

The invention discloses high-solid low-viscosity hydroxy acrylic resin as well as a preparation method and application thereof. During preparation, a first part of solvent and mono-glycidyl ether are added into a reaction kettle, stirred and heated to 140-180 DEG C; a first part of initiator and a chain transfer agent are added into an acrylic monomer mixture, the obtained mixture is dropwise added into a reaction kettle within 3-6 h, and the temperature is kept for 0.5-1h after dropwise addition; the residual initiator and the residual solvent are mixed uniformly and added into the reaction kettle within 20-40 min, the temperature is kept for 1-2 h after the addition is completed, a hydroxyl oligomer is added, stirring is performed for 30-60 min, the temperature is lowered for material discharge, and the high-solid low-viscosity hydroxy acrylic resin is obtained. The resin solid accounts for 70% or higher, the viscosity is as low as 300mPa*s. The technology for preparing the hydroxy acrylic resin is simple, the cost is low, and a bi-component polyurethane coating film has excellent water resistance, acid and alkali resistance and mechanical properties.

Description

technical field [0001] The invention relates to an acrylic resin, in particular to a high-solid and low-viscosity hydroxyl acrylic resin and its preparation method and application, belonging to the field of organic polymer synthesis. Background technique [0002] Acrylic resin coatings have excellent properties such as light color, light resistance, aging resistance, and chemical resistance, and are widely used in the coating and protection of industrial and civil fields such as aircraft, automobiles, equipment, construction, and furniture. With the enhancement of people's awareness of environmental protection and the increasingly stringent laws and regulations, traditional acrylic coatings emit a large amount of volatile organic compounds (VOC) into the air during use due to their high viscosity, low solid content, and high organic solvent content, which pollutes the environment and brings The potential safety hazards are gradually being replaced by environmentally friendly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/14C08L33/12C08K5/06C08F220/28C08F220/14C08F220/18C08F218/00C08F222/20C09D175/04
CPCC09D175/04C08F220/14C08F220/28C08K5/06C08F220/281C08L33/14C08L33/12C08F220/1804C08F218/24C08F222/20C08F220/1802
Inventor 瞿金清刘道峰
Owner 英德市佐桐化学品有限公司
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