Synthetic method for organosilicone modified waterborne polyurethane resin

A water-based polyurethane and synthesis method technology, applied in the field of resin synthesis, can solve the problems of affecting resin adhesion, short service life, low hardness, etc., and achieve the effects of mature and stable production process, preventing uneven stirring, and stable resin performance

Active Publication Date: 2016-05-25
TONGGUANG JIANGSU INFORMATION TECH CO LTD
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the synthesis of one-component water-based polyurethane resin generally has a low hardness of the film after drying, which is lower than 1H or barely reaches 1H. There are almost no 2H in the market, and high hardness will affect the adhesion of the resin on the substrate.
Some water-bas

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
  • Synthetic method for organosilicone modified waterborne polyurethane resin
  • Synthetic method for organosilicone modified waterborne polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Prepare one-component high-hardness silicone-modified waterborne polyurethane resin according to the following steps:

[0031] Equipped with raw materials:

[0032] raw material

Dosage (% by weight)

2,4-Toluene diisocyanate

32.8

Polyester polyol Novomer (molecular weight 1000)

43.5

Dimethylolpropionic acid

5.9

Methylpropanediol

3.4

Trimethylolpropane

4.9

Triethylamine

4.5

KH550

5

[0033] Also equipped with appropriate amount of water, acetone, N-methylpyrrolidone;

[0034] The molecular weight of polyester polyol Novomer is about 1000, the carboxyl content is about 3%, and the silicone content is about 1%. The molar ratio is as follows: 2,4-toluene diisocyanate: polyester polyol Novomer: dimethylol propionic acid : Methylpropanediol: Trimethylolpropane: Triethylamine: KH550 is about 3.8:1.0:1.0:0.8:1.2:1.0:1.3.

[0035] The appearance of the prepared resin is a translucent y...

Embodiment 2

[0037] Prepare one-component high-hardness silicone-modified waterborne polyurethane resin according to the following steps:

[0038] Equipped with raw materials:

[0039] raw material

Dosage (% by weight)

Isophorone diisocyanate

33.6

Polyester polyol Novomer (molecular weight 1000)

43.5

Dimethylolpropionic acid

5.9

Neopentyl glycol

5.5

Trimethylolpropane

2.6

Triethylamine

4.5

KH550

3

Ethylenediamine

1.4

[0040] Also equipped with appropriate amount of water, acetone, N-methylpyrrolidone;

[0041] The molecular weight of polyester polyol Novomer is about 1000, the carboxyl content is about 4.2%, and the silicone content is about 1.2%. The molar ratio is as follows: isophorone diisocyanate: polyester polyol Novomer: dimethylol propionic acid: Neopentyl glycol: trimethylolpropane: triethylamine: KH550: ethylenediamine is about 3.6:1.0:1.0:0.8:1.2:1.0:1.3:0.3.

[0042] The ...

Embodiment 3

[0044] Prepare one-component high-hardness silicone-modified waterborne polyurethane resin according to the following steps:

[0045] Equipped with raw materials:

[0046] raw material

Dosage (% by weight)

Isophorone diisocyanate

35.2

Polyester polyol Novomer (molecular weight 2000)

40.3

Dimethylolpropionic acid

6.5

1,4-Butanediol

4.6

Trimethylolpropane

2.6

Triethylamine

5

KH602

3

isophorone diamine

2.8

[0047] Also equipped with appropriate amount of water, acetone, N-methylpyrrolidone;

[0048] The molecular weight of polyester polyol Novomer is about 2000, the carboxyl content is about 5.1%, and the silicone content is about 1.7%. The molar ratio is as follows: isophorone diisocyanate: polyester polyol Novomer: dimethylol propionic acid: 1,4-Butanediol: Trimethylolpropane: Triethylamine: KH602: Isophoronediamine is about 3.8:1.0:1.0:1.5:1.2:1.0:1.3:0.7.

[0049] The a...

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
Hardnessaaaaaaaaaa
Adhesionaaaaaaaaaa
Login to view more

Abstract

The invention discloses a synthetic method for organosilicone modified waterborne polyurethane resin. The synthetic method comprises the specific steps that firstly, polyester polyol Novomer is subjected to vacuum dehydration, diisocyanate is added dropwise, and a polyurethane prepolymer I is obtained after a reaction; secondly, polyhydroxy carboxylic acid is added to the polyurethane prepolymer I, a dihydric alcohol monomer is added dropwise, and a polyurethane prepolymer II is obtained after a reaction; thirdly, trimethylolpropane is added to the polyurethane prepolymer II, and a polyurethane prepolymer is obtained after a reaction; fourthly, organic amine is added to the polyurethane prepolymer for a salt forming reaction, a silane coupling agent, deionized water and diamine are sequentially added for chain extension and stirring, and the organosilicone modified waterborne polyurethane resin with high hardness is obtained after emulsification. The synthetic method has the advantages that the hardness of the organosilicone modified waterborne polyurethane resin reaches 3H, the adhesive force is good, and stability is good.

Description

technical field [0001] The invention relates to a method for synthesizing a resin, in particular to a method for synthesizing an organosilicon-modified waterborne polyurethane resin. Background technique [0002] In the application field of coatings, due to the excellent chemical properties and relatively comprehensive mechanical and physical properties of polyurethane resin, the coating film after curing has good wear resistance and chemical resistance, and is often used in metal anti-corrosion, automotive coating, aircraft coating Leather, floor paint, road marking paint, etc. However, most polyurethane coatings contain more organic solvents and a certain amount of free isocyanate, thus affecting the environment and people's health during construction and application. Water-based polyurethane uses water as the dispersion medium. Compared with solvent-based polyurethane, it has the advantages of non-combustibility, low odor, non-toxic, non-polluting, energy-saving, and con...

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): C08G18/10C08G18/44C08G18/66C08G18/32C08G18/38
CPCC08G18/10C08G18/44C08G18/664C08G18/6644C08G18/6651C08G18/6662C08G18/3206C08G18/3228C08G18/348C08G18/3893
Inventor 陈重光万江黄星
Owner TONGGUANG JIANGSU INFORMATION TECH 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