Waterborne polyurethane resin emulsion and preparation method thereof, two-component waterborne silver powder coating composition and preparation method thereof

A technology of water-based polyurethane and resin emulsion, which is applied in the direction of coating, etc., can solve the problems of easy aggregation of aluminum powder, poor chemical corrosion resistance and hardness of coating, poor arrangement of silver powder, etc., to prevent aggregation and settlement, and good chemical corrosion resistance , the effect of good hardness

Active Publication Date: 2013-01-16
BYD CO LTD
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems in the prior art that the aluminum powder in the single-component water-based silver powder paint is easy to agglomerate, resulting in poor arrangement of the silver powder and poor chemical corrosion resistance and hardness of the formed coating, the invention provides a water-based polyurethane resin and Its preparation method, a kind of two-component water-based silver powder coating composition and its preparation method

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
  • Waterborne polyurethane resin emulsion and preparation method thereof, two-component waterborne silver powder coating composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The preparation method of the water-based polyurethane resin emulsion of the present invention comprises the steps of: 1) drying and dehydrating the polymer diol and the catalyst, and then adding diisocyanate to react to obtain a prepolymer; Resin and the prepolymer obtained in step 1) are mixed to obtain resin I, and resin I is mixed with a hydrophilic chain extender to obtain resin II, and neutralizing agent and chain terminator are sequentially added to resin II to obtain resin III; 3) To the resin III obtained in step 2), add the solvent deionized water, initiator and organic fluorine resin in sequence to obtain a water-based polyurethane resin emulsion.

[0022] The preparation method of the water-based polyurethane resin emulsion provided by the present invention can specifically be described as: 1) Mix the vinyl acetate resin with methanol, modify the vinyl acetate resin under the action of alkali catalysis, and obtain the hydroxyl modified polyvinyl alcohol conta...

Embodiment 1

[0041]Step 1. Preparation of water-based polyurethane resin emulsion: Step 1.1. Add 210 g of methanol and 5 g of NaOH into a four-necked flask, and heat in a water bath at 45° C. for 15 min. Add 70g of vinyl chloride resin (cp-710 from Sunshine Chemical Co.), react for 9 hours, and discharge to obtain hydroxyl-modified binary vinyl vinyl resin for later use; step 1.2, add polymerization Diol (Shanghai BYU Technology Development Co., Ltd., polyether polyol 330N) and catalyst (10wt% solution of dibutyltin diacetate) were dried and dehydrated under nitrogen at 150°C for 1 h, and then diisocyanate (IPDI from Bayer, Germany) was added. ), reacted at 85°C for 1.5h. Then add acetone to reduce the viscosity of the system, and add 10g of the hydroxyl-modified divinyl chloride resin obtained in step 1.1, and copolymerize at 85°C for 2 hours, then add a hydrophilic chain extender (DMPA (dimethylol propionic acid)) and stir After reacting for 1.5h, the temperature was lowered to 45°C, an...

Embodiment 2

[0044] Change each component content by each component content shown in embodiment 2 column in table 1, other are all the same with embodiment 1, by the solid content of the aqueous polyurethane resin emulsion that step 1) obtains is 36%, finally obtains two-component Waterborne polyurethane silver powder coating S2.

[0045]

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
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a waterborne polyurethane resin emulsion which contains a hydroxyl-modified binary vinyl chloride-vinyl acetate copolymer resin, a polymer dihydric alcohol, diisocyanate, a hydrophilic chain extender, an organic fluororesin, a catalyst, a neutralizer, a chain terminating agent and an initiator. The invention also provides a preparation method of the above waterborne polyurethane resin emulsion, a two-component waterborne silver powder coating composition prepared by the same and a preparation method thereof. The two-component waterborne silver powder coating composition provided by the invention has the advantages of good silver powder arrangement, good chemical corrosion resistance and good hardness.

Description

technical field [0001] The invention belongs to the field of coating compositions, and in particular relates to a water-based polyurethane resin emulsion and a preparation method thereof, a two-component water-based silver powder coating composition and a preparation method thereof. Background technique [0002] With the development of modern industry, plastic, as a new type of material, has widely replaced traditional materials such as wood and steel, and is used in various industries, such as most electronic products such as mobile phones, digital cameras, and notebook computers. In order to achieve beauty and durability, it is necessary to paint, decorate and protect the plastic surface. Currently on the market, solvent-based silver powder paints and water-based silver powder paints are the main ones. Among them, solvent-based silver powder paints generally use organic solvents with a strong pungent odor as diluents, and the organic solvents used, such as xylene and gasol...

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 Applications(China)
IPC IPC(8): C08F283/00C08G18/66C08G18/62C08G18/10C09D151/08C09D161/02C09D7/12
Inventor 李英卓崔静娜黄小萍宋本玲其他发明人请求不公开姓名
Owner BYD CO LTD
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap