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

Photocurable waterborne hyperbranched resin and preparation method thereof

A hyperbranched resin and light-curing technology, which is applied in biocide-containing paints, anti-fouling/underwater coatings, coatings, etc., can solve the problems of poor storage stability of light-cured water-based resins, and achieve excellent water resistance and storage stability good sex effect

Inactive Publication Date: 2020-01-10
南雄市沃太化工有限公司
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a photocurable water-based hyperbranched resin and a preparation method thereof, aiming at solving the problem of poor storage stability of photocurable water-based resins in the prior art

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
  • Photocurable waterborne hyperbranched resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0035] As an embodiment, the polyol is used as the core molecule. Generally, low molecular weight polyol is selected as the core molecule. The core molecule can be synthesized with a polyhydroxy acid to form a macromolecular high-functional polyol. For example, the main polyol includes but is not limited to trimethylol One or more of propane, pentaerythritol, glycerol, trihydroxyethylethane, sorbitol, polyether triol and polyester triol.

[0036] As an embodiment, the isocyanate may be one or more of aliphatic isocyanate, alicyclic isocyanate and aromatic diisocyanate. Aliphatic isocyanates are preferred. It is beneficial to the stability of waterborne hyperbranched resin.

[0037] As an embodiment, the acrylate is hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, butylene glycol acrylate, hexanediol acrylate, trimethylol One or more of base diacrylate and pentaerythritol triacrylate.

[0038] As an embodiment, the neutral...

Embodiment 1

[0062] Step (1) Add 14g trimethylolpropane, 200g dimethylolpropionic acid, 0.8g p-methylolpropane to a 1000ml four-neck flask equipped with a stirrer, condenser, water separator, and thermometer under nitrogen protection. Benzenesulfonic acid, 150g of xylene is heated up to 135°C to start the reaction. When no more water distills out of the water separator, the temperature is raised to 160°C, and the reaction is vacuumed for 1 hour to remove the xylene. The acid value of the system is 18mgKOH / g, and you can get hyperbranched polyester.

[0063] Step (2) Add 190g of IPDI into another three-necked flask equipped with a stirrer and a thermometer, add 0.1g of MEHQ, rise to 45°C, add 104g of hydroxyethyl acrylate dropwise, and react at 50°C until the NCO is 12.5% , to obtain an isocyanate-acrylate prepolymer.

[0064] Step (3) Add the isocyanate-acrylate prepolymer obtained in step (2) to the hyperbranched polyester obtained in step (1), and raise the temperature to 80° C. to reac...

Embodiment 2

[0069] Step (1) In a 1000ml four-necked flask equipped with a stirrer, a condenser, a water separator, and a thermometer, add 14g of pentaerythritol, 160g of dimethylolpropionic acid, 1g of p-toluenesulfonic acid, and 150g of Raise the temperature of xylene to 145°C to start the reaction. When no more water distills out of the water separator, raise the temperature to 165°C, and perform a vacuum reaction for 2 hours to remove xylene. The acid value of the system is 10mgKOH / g, and the hyperbranched polyester can be obtained. .

[0070] Step (2) Add 134g HDI into another three-necked flask equipped with a stirrer and a thermometer, add 0.12g MEHQ, raise to 45°C, add 104g hydroxyethyl methacrylate dropwise, and react at 55°C until NCO is 14.1%, an isocyanate-acrylate prepolymer was obtained.

[0071] Step (3) Add the isocyanate-acrylate prepolymer obtained in step (2) to the hyperbranched polyester obtained in step (1), and the temperature rises to 85° C. until the NCO in the sy...

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

No PUM Login to View More

Abstract

The invention discloses a photocurable waterborne hyperbranched resin and a preparation method thereof. The waterborne hyperbranched resin is synthesized through reacting 1-6 wt% of a polyol, 10-50 wt% of a polyhydroxy acid, 6-25 wt% of a polybasic acid anhydride, 10-45 wt% of isocyanate, 4-6 wt% of a neutralizer and 10-30 wt% of acrylate; the polyhydroxy acid is one or more of dimethylolpropionicacid, dihydroxybutyric acid, ethylenediamine butyl sulfonic acid and glycollic acid; and the polybasic anhydride is one or more of phthalic anhydride, maleic anhydride, trimellitic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, butanedioic anhydride and adipic acid anhydride. The photocurable waterborne hyperbranched resin has a good storage stability; and a film formed bythe resin under the action of a photoinitiator has excellent water resistance, hardness, aging resistance, chemical resistance and pollution resistance, also has the characteristics of high glossiness, good wear resistance, strong adhesion, high fullness, excellent impact resistance and the like, and is widely applied to surface radiation coating and protection of products such as wood plastic andthe like.

Description

technical field [0001] The invention relates to the technical field of resin synthesis, in particular to a photocurable water-based hyperbranched resin and a preparation method thereof. Background technique [0002] At present, the high-functionality water-based UV resins used in photocurable water-based coatings usually have poor stability, lack the toughness of oil-based UV resins, high viscosity of the resins, low functionality of the resins, and insufficient hydrophilicity. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] In view of the above deficiencies in the prior art, the object of the present invention is to provide a light-curable water-based hyperbranched resin and a preparation method thereof, aiming at solving the problem of poor storage stability of the light-curable water-based resin in the prior art. [0005] The technical solution adopted by the present invention to solve technical problems is...

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): C08G18/67C08G18/42C08G63/60C08G63/06C09D175/14C09D5/08C09D5/16
CPCC08G18/4283C08G18/672C08G63/06C08G63/60C09D5/08C09D5/1662C09D175/14C08G18/42
Inventor 张家文郭常州
Owner 南雄市沃太化工有限公司
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