Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method for preparing aqueous acrylic acid modified alkyd resin coating

A water-based acrylic and alkyd resin technology, applied in polyester coatings, coatings, etc., can solve the problems of low conversion rate of modified monomers, reduce coating stability, reduce double bond content, etc., and achieve significant economic benefits and social benefits benefit, improve water solubility, and shorten reaction time

Inactive Publication Date: 2010-09-15
BEIJING UNIV OF CHEM TECH
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of modification method will cause some problems, such as low conversion rate of modified monomers, unreacted modified monomers will reduce the stability of the coating, the proportion of modified monomers introduced in alkyd is limited, and the reduction of alcohol The double bond content in the acid resin originally used for curing to form a film, etc.

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 preparing aqueous acrylic acid modified alkyd resin coating
  • Method for preparing aqueous acrylic acid modified alkyd resin coating
  • Method for preparing aqueous acrylic acid modified alkyd resin coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation of acrylic acid modified monomer copolymer: add 5.88g of maleic anhydride and 50mL of organic solvent xylene in the reaction kettle, pass in nitrogen, stir mechanically, heat up to 100°C, and dissolve 35.2g of methacrylic acid The mixture of isobutyl ester and 1.06g benzoyl peroxide was dripped into the reaction kettle within 2 hours under reflux state, and kept warm for 4 hours to obtain the acrylic acid modified monomer copolymer, and its infrared spectrum is shown in the accompanying drawing figure 1 . Through the determination of solid content, it was confirmed that the monomer conversion rate was 97.69%.

[0028] (2) Preparation of monoglycerides: Add 44.0 g of dehydrated castor oil, 13.4 g of trimethylolpropane and 0.05 g of sodium hydroxide into the reaction kettle, stir mechanically, raise the temperature to 90° C., keep warm and vacuumize for 1 hour to remove water, Nitrogen was passed, and the temperature was raised to 230°C for alcoholysis re...

Embodiment 2

[0033] (1) Preparation of acrylic acid modified monomer copolymer: add 5.88g of maleic anhydride and 50mL of organic solvent xylene in the reaction kettle, feed nitrogen, stir mechanically, heat up to 100°C, and dissolve 26.4g of methacrylic acid The mixture of isobutyl ester and 0.79g benzoyl peroxide was dripped into the reaction kettle within 3 hours under reflux state, and was incubated for 3 hours.

[0034] (2) Preparation of monoglycerides: Add 22.0g dehydrated castor oil, 22.1g soybean oil, 13.4g trimethylolpropane and 0.05g sodium hydroxide into the reaction kettle, stir mechanically, heat up to 90°C, keep warm and vacuumize to remove water After 1 hour, nitrogen was blown, and the temperature was raised to 230° C. to carry out the alcoholysis reaction until reaching the end point of alcoholysis.

[0035] (3) prepare acrylic acid modified alkyd resin: the xylene solution of the acrylic acid modified monomer copolymer that step (1) makes is with the monoglyceride that s...

Embodiment 3

[0039] (1) Preparation of acrylic acid modified monomer copolymer: add 5.88g of maleic anhydride and 50mL of organic solvent xylene in the reaction kettle, feed nitrogen, stir mechanically, heat up to 100°C, and dissolve 12.5g of methacrylic acid The mixture of isobutyl ester, 12.5g of n-butyl methacrylate and 0.75g of benzoyl peroxide was dripped into the reaction kettle within 2 hours under reflux, and kept warm for 3 hours.

[0040] (2) Preparation of monoglycerides: add 44.2g soybean oil, 13.4g trimethylolpropane and 0.05g sodium hydroxide into the reaction kettle, stir mechanically, heat up to 90°C, keep warm and vacuumize to remove water for 1 hour, then pass nitrogen , the temperature was raised to 230°C to carry out the alcoholysis reaction until reaching the end point of alcoholysis.

[0041] (3) prepare acrylic acid modified alkyd resin: the xylene solution of the acrylic acid modified monomer copolymer that step (1) makes is with the monoglyceride that step (2) make...

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
Pencil hardnessaaaaaaaaaa
Impact resistanceaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing an aqueous acrylic acid modified alkyd resin coating, which is implemented by the following steps: (1) preparing an acrylic acid modified monomer copolymer; (2) preparing a monostearate monoglyceride; (3) reacting the acrylic acid modified monomer copolymer with the monostearate monoglyceride, polyacid and polyol to prepare an acrylic acid modified alkyd resin; (4), subjecting the acrylic acid modified alkyd resin to self-emulsification to prepare aqueous acrylic acid modified alkyd resin of which the particle size is 20 to 100 nanometers and the solid content is 25 to 35 weight percent; and (5) adding an assistant to the aqueous acrylic acid modified alkyd resin serving as a substrate to prepare the aqueous acrylic acid modified alkyd resin coating. The production process of the invention reduces reaction time and production energy consumption; the product uses water as a diluent, is nontoxic, non-inflammable and environmental pollution free and can be used in the field of metal corrosion prevention; and the prepared paint coating has high mechanical performance, gloss and certain corrosion resistance.

Description

technical field [0001] The invention relates to a preparation method of water-based acrylic acid modified alkyd resin paint. Background technique [0002] Traditional alkyd resin coatings are mostly solvent-based, which has the advantages of cheap and easy-to-obtain raw materials, good film adhesion, brightness, plumpness, and good wetting performance on pigments. It has always occupied a considerable proportion in the field of traditional coatings. However, traditional alkyd resin coatings contain a large amount of organic solvents, which volatilize into the atmosphere during construction and have a serious impact on the human body and the ecological environment. With the improvement of people's awareness of environmental protection and the introduction of various regulations restricting VOC (Volatile Organic Compound) and HAPS (Hazardous Air Pollutants) in various countries, the development of environmentally friendly water-based alkyd coatings can not only reduce The use...

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): C09D167/08
Inventor 李效玉肖娴何立凡
Owner BEIJING UNIV OF CHEM TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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