Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing ultra-high solid content hydroxy acrylic resin

A hydroxyacrylic acid, ultra-high solid content technology, applied in the direction of coating, can solve the problems of large motion resistance, serious intermolecular entanglement, and reduced reactivity

Active Publication Date: 2008-05-07
中山大桥化工集团有限公司
View PDF1 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional acrylic resin is a linear polymer obtained by free radical polymerization of vinyl monomers. At a high concentration, the intermolecular entanglement is serious, and it has a large movement resistance, which is manifested as a high flow viscosity, thus giving it a direct application of
In addition, some active functional groups in the molecular structure are covered by long chains, resulting in reduced reactivity due to steric hindrance.
The high solid content hydroxyl acrylic resin currently promoted in the market generally has a solid content of 60%-70%, and mercaptan chain transfer agents are widely used in the synthesis process to reduce the molecular weight of the resin, and the mercaptan odor in the product is difficult to remove

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing ultra-high solid content hydroxy acrylic resin
  • Method for producing ultra-high solid content hydroxy acrylic resin
  • Method for producing ultra-high solid content hydroxy acrylic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Preparation of methyl methacrylate (MMA) / butyl methacrylate (BMA) / hydroxyethyl methacrylate (HEMA) macromonomer (Macromonomer-1): MMA100g / HEMA 130g / BMA 160g and 167g butyl acetate Ester, 1.95g AIBN, and 78.5mg COPhBF (bis(difluoroboron benzenedione oxime) cobalt acid (II) salt) were mixed uniformly and then added to the reaction flask, heated and stirred at 75°C under nitrogen atmosphere, and reacted for 5h. The solid content of the product is 65%, and the conversion rate is 93%. GPC result Mn=3097, Mw / Mn=1.75.

[0089] Add 60g of butyl acetate and 1.5g of AIBN to a three-necked flask. After the initiator is dissolved, the temperature is raised to 75°C, and then 300g of the resulting Macromonomer-1 solution, 31.5g of styrene (St), 31.5g of hydroxyethyl acrylate (HEA), and 36.75 After mixing g methyl acrylate (MA) and 5.25 g acrylic acid (AA) uniformly, they were slowly dripped into the flask through a constant pressure dropping funnel for 4 hours. After holding for 1 hour, ...

Embodiment 2

[0091] Preparation of MMA / BMA / HEMA macromonomer (Macromonomer-2): MMA100g / HEMA 130g / BMA 160g mixed with 167g butyl acetate, 1.95g AIBN, 100mg COPhBF and then added to the reaction flask, heated at 75°C under nitrogen atmosphere Stir and react for 5h. The solid content of the product is 62%, and the conversion rate is 89%. GPC result Mn=1581, Mw / Mn=1.56.

[0092] Add 60g butyl acetate and 1.5g AIBN to a three-necked flask. After the initiator is dissolved, the temperature is raised to 75°C, and then 300g of the resulting Macromonomer-2 solution is mixed with 31.5g St, 31.5g HEA, 36.75g MA, 5.25g AA. Add 15 g of butyl acetate and 0.25 g of AIBN to the flask slowly after 4 hours of constant pressure dropping funnel, and then add 15 g of butyl acetate and 0.25 g of AIBN after holding for 1 hour, and then keep the temperature for 2 hours. After being naturally cooled, it is mixed with 3 times the volume of butyl acetate and passed through a silica gel column with a height of 5 cm for d...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Viscosityaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention is a preparation method of ultra-high solid content hydroxyl acrylic resin and belongs to the coating manufacturing industry. It uses methacrylate macromonomers with polymerizable double bonds at the end and vinyl monomers to copolymerize to obtain a grafted structure hydroxy acrylic resin. The resin has excellent properties, low viscosity, and a solid content of more than 80%. It can save organic solvents, reduce environmental pollution, and avoid introducing the smell of mercaptans. The invention includes the following steps: (A) adding methacrylate macromonomer to the copolymerized ethylene monomer of the synthetic resin in an amount of 1-20%; (B) copolymerizing the ethylene monomer includes 10-35% Alkyl methacrylate, 10-40% hydroxyalkyl methacrylate, 1-10% unsaturated carboxylic acid and 0-50% other vinyl monomers; (C) Add solvent to the reactor and introduce nitrogen Heating to the reflux temperature, insulation, adding initiator and solvent, cooling and then mixing with 3 times the solvent, decolorization, and distillation under reduced pressure to obtain the finished product.

Description

[Technical field]: [0001] The present invention uses a macromonomer method to prepare a grafted ultra-high solid content hydroxyl acrylic resin, which is obtained by polymerization by adding a free radical initiator in the presence of a solvent, and belongs to the organic polymer coating manufacturing industry. 【Background technique】: [0002] In the coating industry, acrylic resin has many excellent properties (weather resistance, good chemical stability, etc.) and is widely used. Traditional solvent-based acrylic resins are subject to competition from water-based, high-solid, powder, light-cured, and environmentally friendly varieties, and their market share has gradually decreased. High-solid acrylic resins developed on the basis of traditional solvent-based resins have developed rapidly. Compared with traditional solvent-based coatings, high-solid acrylic resin greatly reduces the content of organic volatiles in the coating system, saving curing energy consumption. At t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F265/04C09D151/06
Inventor 夏必来曾广鹏凌建雄洪昕林张新宇
Owner 中山大桥化工集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com