Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of environment-friendly matting type waterborne polyurethane resin

A water-based polyurethane and environmentally friendly technology, which is applied in the field of preparation of matting water-based polyurethane resin, can solve problems such as unevenness, uneven gloss on the surface of the material, and easy peeling of the coating

Inactive Publication Date: 2021-06-08
CHANGCHUN UNIV OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: firstly, the matting agent added in the paint is prone to sedimentation over time, which will cause uneven dyeing during printing and result in uneven gloss on the surface of the final material
Second, usually the resin has poor compatibility with the matting agent, and the coating is easy to peel off
Third, due to the condensation of the matting agent inside the paint, the surface of the printed material will have an uneven effect, which reduces the flexibility of the material
[0004] Some traditional coatings contain a large amount of organic solvents, which have adverse effects on human health and the environment

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
  • A kind of preparation method of environment-friendly matting type waterborne polyurethane resin
  • A kind of preparation method of environment-friendly matting type waterborne polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1 A kind of preparation method of environmentally friendly matting type waterborne polyurethane resin, steps and conditions are as follows:

[0048] A kind of material and mass percent of environmentally friendly matting type waterborne polyurethane resin are as follows:

[0049] Polyethylene glycol 1%, diisocyanate 34.8%, polytetrahydrofuran ether glycol 59.5%, catalyst 0.015%, carboxylic acid type hydrophilic chain extender 2.2%, neutralizer 1.65%, post-chain extender A 0.41%; Post-chain extender B0.43%.

[0050] The specific addition is as follows: polyethylene glycol molecular weight is 400, quality 1g; Diisocyanate is isophorone diisocyanate, quality 38.4g; Polytetrahydrofuran ether glycol molecular weight is 1000, quality 59.5g; 0.015g; carboxylic acid type hydrophilic chain extender is dimethylolpropionic acid, quality 2.2g; neutralizer is triethylamine, quality 1.65g; post-chain extender A is 2-[(2-aminoethyl ) amino] sodium ethanesulfonate, mass 0....

Embodiment 2

[0056] Embodiment 2 A kind of preparation method of environment-friendly matting type waterborne polyurethane resin, steps and conditions are as follows:

[0057] A kind of material and mass percent of environmentally friendly matting type waterborne polyurethane resin are as follows:

[0058] Polyethylene glycol 3%, diisocyanate 34%, polytetrahydrofuran ether glycol 57.3%, catalyst 0.015%, carboxylic acid type hydrophilic chain extender 2.4%, neutralizer 1.81%, post-chain extender A 0.84%; Post chain extender B0.64%.

[0059] The specific addition amount is as follows: the molecular weight of polyethylene glycol is 2000, and the quality is 3g; the diisocyanate is isophorone diisocyanate, and the quality is 34g; the molecular weight of polytetrahydrofuran ether glycol is 1000, and the quality is 57.3g; g; carboxylic acid type hydrophilic chain extender is dimethylolpropionic acid, quality 2.4g; neutralizer is triethylamine, quality 1.81 g; post-chain extender A is 2-[(2-amino...

Embodiment 3

[0065] Embodiment 3 A kind of preparation method of environmentally friendly matting type waterborne polyurethane resin, steps and conditions are as follows:

[0066] A kind of material and mass percent of environmentally friendly matting type waterborne polyurethane resin are as follows:

[0067] Polyethylene glycol 2%, diisocyanate 34.3%, polytetrahydrofuran ether glycol 58.9%, catalyst 0.015%, carboxylic acid type hydrophilic chain extender 2.2%, neutralizer 1.65%, post-chain extender A 0.52%; Post chain extender B0.42%.

[0068] The specific addition amount is as follows: the molecular weight of polyethylene glycol is 1000, and the quality is 2g; the diisocyanate is isophorone diisocyanate, and the quality is 34.3g; 0.015g; carboxylic acid type hydrophilic chain extender is dimethylolpropionic acid, quality 2.2g; neutralizer is triethylamine, quality 1.65g; post-chain extender A is 2-[(2-aminoethyl ) sodium amino]ethanesulfonate, mass 0.52g, post-chain extender B is hydr...

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
glossaaaaaaaaaa
transmittivityaaaaaaaaaa
Login to View More

Abstract

The invention is a preparation method of an environment-friendly matting water-based polyurethane resin. First prepare the polyurethane prepolymer. React polyethylene glycol with aliphatic diisocyanate, such as isophorone diisocyanate or hexamethylene diisocyanate, and then add carboxylic acid type hydrophilic chain extender and polyether polyol in sequence to prepare water-based polyurethane prepolymerization. body. The second step is the water dispersion and post-chain extension process. Add deionized water to the water-based polyurethane prepolymer to disperse, drop in successively the rear chain extender 2-[(2-aminoethyl) amino] sodium ethanesulfonate aqueous solution and hydrazine hydrate aqueous solution, and finally prepare an environment Matte-friendly water-based polyurethane resin. The advantage of the present invention is that the chemical matting method is used to prepare a matting type water-based polyurethane resin, the preparation process is simple, and no organic solvent or matting agent is needed. This type of resin emulsion has good stability, high solid content, good film mechanical properties, good water resistance, gloss (60°)<2.0, light transmittance (%)<11, solid content 45-50%.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly matting water-based polyurethane resin. Background technique [0002] With the change of people's aesthetic concept, the decoration of matting paint on the surface of materials is becoming more and more popular. For example, matting paint on the surface of leather, fiber fabric, paper and other materials can produce a very natural optical appearance, comfortable tactile feeling, and can cover up some small scratches, dirt and fingerprints. The matting effect mainly depends on the ability of the coating surface to reflect light. The surface of high-gloss materials has a strong ability to reflect light, while the surface of matte materials mainly produces light refraction or reduces the intensity of reflected light. [0003] The traditional matting method for the material surface is the physical matting method, that is, adding a large amount of matting agent, such as silica powder...

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): C08G18/75C08G18/66C08G18/48C08G18/34C08G18/32C08G18/12
CPCC08G18/0823C08G18/12C08G18/348C08G18/4825C08G18/4854C08G18/6692C08G18/755C08G18/3857C08G18/3231
Inventor 吴广峰刘雪雁马剑英
Owner CHANGCHUN UNIV OF TECH