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

Production method of oxidatively curable alkyd-modified silicone-acrylic copolymer

A technology of silicone acrylic copolymer, which is applied in the direction of coating, etc., can solve the problems of weather resistance, decrease of coating film strength, slow drying, etc., and achieve the effect of high initial gloss

Active Publication Date: 2019-01-11
HARIMA CHEM INC
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, alkyd resins have excellent initial gloss compared to acrylic resins and silicone-modified resins, but dry slowly, and weather resistance and coating film strength decrease in parts exposed to ultraviolet rays, wind and rain, 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
  • Production method of oxidatively curable alkyd-modified silicone-acrylic copolymer
  • Production method of oxidatively curable alkyd-modified silicone-acrylic copolymer
  • Production method of oxidatively curable alkyd-modified silicone-acrylic copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0116] Hereinafter, although an Example and a comparative example are given and this invention is concretely demonstrated, this invention is not limited to these Examples.

Synthetic example

[0117] (Synthesis example: Synthesis of alkyd resin)

[0118] The following raw materials were added to the reaction vessel, the temperature was raised to 240° C., and the reaction was carried out until the acid value was 5 or less while removing moisture in the reaction system with a water separator. When the acid value was 5 or less, xylene was removed by distillation under reduced pressure. After cooling, the obtained reactant was diluted with 350 parts by mass of petroleum spirit to obtain an oil content of 50%, an acid value of 2.5, a viscosity (Gardner bubble viscometer / 25°C) Z, a color number (Gardner) of 6, and a non-volatile content of 60% by mass. alkyd resin.

[0119] Phthalic anhydride: 140 parts by mass

[0120] Dehydrated castor oil fatty acid: 260 parts by mass

[0121] Glycerin: 50 parts by mass

[0122] Pentaerythritol: 70 parts by mass

[0123] Reflux solvent (xylene): 15.6 parts by mass

Embodiment 1

[0125]

[0126] 17.53 parts by mass of the alkyd resin (60% by mass of non-volatile content) and 31.78 parts by mass of petroleum spirit obtained in the above synthesis example were put into a reaction vessel, stirred while blowing nitrogen gas, and heated to 120°C. Next, the mixture shown below was dropped into the reaction vessel over 2 hours while maintaining the temperature at 120°C. In addition, the ratio in parentheses shows the ratio of each monomer when the total amount of monomers is 100 mass %.

[0127] (mixture)

[0128] Isobutyl methacrylate: 21.24 parts by mass (50.0% by mass)

[0129] Tert-butyl methacrylate: 2.12 parts by mass (5.0% by mass)

[0130] n-butyl acrylate: 7.95 parts by mass (18.7% by mass)

[0131] Styrene: 10.70 parts by mass (25.2% by mass)

[0132] 2-Hydroxyethyl methacrylate: 0.43 parts by mass (1.0% by mass)

[0133] Methacrylic acid: 0.04 parts by mass (0.1% by mass)

[0134] tert-hexyl peroxyisopropyl monocarbonate: 0.46 parts by mass...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The oxidation-curable alkyd-modified silicone acrylic copolymer of the present invention is obtained by reacting an oxidation-curable acrylic copolymer (a) with a silicone (b) having at least one of a hydroxyl group and an alkoxy group. of. Oxidation-curable acrylic copolymer (a) is represented by (a-1) styrene, (a-2) (meth)acrylate, and (a-3) polymerizable unsaturated monomer The copolymer obtained by graft-polymerizing the monomer of the above-mentioned monomer and the alkyd resin (c) having an oxidative polymerizable group.

Description

technical field [0001] The present invention relates to an oxidation-curable alkyd-modified silicone acrylic copolymer capable of forming a coating film excellent in initial gloss, weather resistance, initial dryness, and impact resistance (strength). Background technique [0002] Alkyd resins are based on fats and oils, and have oxidative polymerizability to form a coating film by oxidative drying and natural curing. Therefore, compared with oil-based blending paints that use mature oil (long oil) as a coating film-forming component, it dries faster and gives a coating film with initial gloss, and can be widely used as an iron paint for indoors and outdoors of general buildings. Synthetic resin and paint film-forming components of wood parts and interior parts. However, alkyd resins have excellent initial gloss compared to acrylic resins and silicone-modified resins, but dry slowly, and weather resistance and coating film strength decrease in parts exposed to ultraviolet r...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/00C09D151/00C09D183/10
CPCC09D151/00C09D183/10C08G77/442
Inventor 大桥祐纪
Owner HARIMA CHEM INC
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