阅读说明：本技术 一种hdpe热熔粉改性水性聚氨酯树脂 (HDPE hot melt powder modified waterborne polyurethane resin ) 是由 谢伟 黎克旺 胡中青 杨明虎 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种HDPE热熔粉改性水性聚氨酯树脂,包括如下重量份数的各组份：二异氰酸酯50份、低聚物多元醇30份、稀释剂17份、HDPE热熔粉20份、三乙胺8份、中和剂10份、亲水改性剂7份、扩链剂2份、催化剂0.4份、去离子水80份。方法制备的改性水性聚氨酯树脂可用作天然皮革及人造革的涂层剂及补伤剂。改性水性聚氨酯涂饰剂克服了丙烯酸乳液涂饰剂"热粘冷脆"的弱点,其处理的皮革手感柔软、滑爽、丰满、光亮,真皮感极强,可极大提高皮具档次,增强市场竞争力。传统的水性聚氨酯是线形的,具热塑性,通过加入扩链剂和亲水性扩链剂进而引入三官能度单体形成适当的分支,进而提高其强度、硬度、耐水性、耐溶剂。(The invention discloses HDPE hot melt powder modified waterborne polyurethane resin which comprises the following components in parts by weight: 50 parts of diisocyanate, 30 parts of oligomer polyol, 17 parts of diluent, 20 parts of HDPE hot melt powder, 8 parts of triethylamine, 10 parts of neutralizer, 7 parts of hydrophilic modifier, 2 parts of chain extender, 0.4 part of catalyst and 80 parts of deionized water. The modified water-based polyurethane resin prepared by the method can be used as a coating agent and a repairing agent for natural leather and artificial leather. The modified waterborne polyurethane coating agent overcomes the defects of hot sticking and cold brittleness of an acrylic emulsion coating agent, and the treated leather has soft, smooth, plump and bright handfeel and strong real leather feeling, can greatly improve the grade of leather and enhance the market competitiveness. The traditional waterborne polyurethane is linear and thermoplastic, and a chain extender and a hydrophilic chain extender are added to introduce a tri-functionality monomer to form a proper branch, so that the strength, hardness, water resistance and solvent resistance of the waterborne polyurethane are improved.)

1. The HDPE hot melt powder modified waterborne polyurethane resin is characterized by comprising the following components in parts by weight: 40-55 parts of diisocyanate, 25-40 parts of oligomer polyol, 15-20 parts of diluent, 10-30 parts of HDPE hot melt powder, 6-10 parts of triethylamine, 5-15 parts of neutralizer, 5-8 parts of hydrophilic modifier, 1-3 parts of chain extender, 0.2-0.5 part of catalyst and 60-100 parts of deionized water.

2. The HDPE hot melt powder modified waterborne polyurethane resin as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 50 parts of diisocyanate, 30 parts of oligomer polyol, 17 parts of diluent, 20 parts of HDPE hot melt powder, 8 parts of triethylamine, 10 parts of neutralizer, 7 parts of hydrophilic modifier, 2 parts of chain extender, 0.4 part of catalyst and 80 parts of deionized water.

3. The HDPE hot melt powder modified aqueous polyurethane resin as claimed in claim 1, wherein the diisocyanate is one or more of toluene diisocyanate, 4 '-diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, and 4,4' -dicyclohexylmethane diisocyanate.

4. The HDPE hot melt powder modified waterborne polyurethane resin as claimed in claim 1, wherein the oligomer polyol is one or more of polycarbonate diol, polypropylene oxide polyol, polyethylene oxide diol, polytetrahydrofuran diol, polyethylene glycol adipate diol, and neopentyl glycol adipate diol.

5. The HDPE hot melt powder modified waterborne polyurethane resin as claimed in claim 1, wherein the diluent is one or more of acetone, butanone and N-methylpyrrolidone.

6. The HDPE hot melt powder modified waterborne polyurethane resin as claimed in claim 1, wherein the hydrophilic modifier is one or more of 2-hydroxypropionic acid, 2-pyrrolidone, 3-hydroxypropionic acid and 2-hydroxybutyric acid.

7. The HDPE hot melt powder modified waterborne polyurethane resin of claim 1, wherein the chain extender is one or more of 1, 4-butanediol, 1, 6-hexanediol, ethylene glycol, 1, 2-propanediol, diethylene glycol, trimethylolpropane, ethylenediamine, diethylenetriamine, isophoronediamine, and sulfamate.

8. The HDPE hot melt powder modified waterborne polyurethane resin as claimed in claim 1, wherein the HDPE hot melt powder is a HDPE hot melt powder with a hot melt temperature of 100-130 ℃.

Technical Field

The invention relates to the technical field of coating materials, in particular to HDPE hot melt powder modified waterborne polyurethane resin.

Background

The waterborne polyurethane resin has the advantages of non-inflammability, no toxicity, no environmental pollution, energy conservation and the like, and has excellent properties of high strength, wear resistance, safe use and the like, so the waterborne polyurethane resin is widely applied and becomes an important development direction in the field of new materials at home and abroad. Up to now, the industrialized waterborne polyurethane in China has few varieties and small yield, is difficult to meet the current diversified requirements, and has poor film forming property, flexibility, strength, solvent resistance and water resistance.

Disclosure of Invention

The invention aims to provide an HDPE hot melt powder modified waterborne polyurethane resin, which is used for solving the technical problems in the background technology.

The technical scheme of the invention is that the HDPE hot melt powder modified waterborne polyurethane resin comprises the following components in parts by weight: 40-55 parts of diisocyanate, 25-40 parts of oligomer polyol, 15-20 parts of diluent, 10-30 parts of HDPE hot melt powder, 6-10 parts of triethylamine, 5-15 parts of neutralizer, 5-8 parts of hydrophilic modifier, 1-3 parts of chain extender, 0.2-0.5 part of catalyst and 60-100 parts of deionized water.

In a preferred embodiment, the composition comprises the following components in parts by weight: 50 parts of diisocyanate, 30 parts of oligomer polyol, 17 parts of diluent, 20 parts of HDPE hot melt powder, 8 parts of triethylamine, 10 parts of neutralizer, 7 parts of hydrophilic modifier, 2 parts of chain extender, 0.4 part of catalyst and 80 parts of deionized water.

In a preferred embodiment, the diisocyanate is one or more of toluene diisocyanate, 4 '-diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, 4' -dicyclohexylmethane diisocyanate.

In a preferred embodiment, the oligomer polyol is one or more of polycarbonate diol, polyoxypropylene polyol, polyoxyethylene diol, polytetrahydrofuran diol, polyethylene glycol adipate diol, and neopentyl glycol adipate diol.

In a preferred embodiment, the diluent is one or more of acetone, butanone and N-methylpyrrolidone.

In a preferred embodiment, the hydrophilic modifier is one or more of 2-hydroxypropionic acid, 2-pyrrolidone, 3-hydroxypropionic acid, and 2-hydroxybutyric acid.

In a preferred embodiment, the chain extender is one or more of 1, 4-butanediol, 1, 6-hexanediol, ethylene glycol, 1, 2-propanediol, diethylene glycol, trimethylolpropane, ethylenediamine, diethylenetriamine, isophoronediamine, sulfamates.

In a preferred embodiment, the HDPE hot melt powder is an HDPE hot melt powder with a hot melt temperature of 100-130 ℃.

The technical scheme of the invention has the beneficial effects that:

the modified water-based polyurethane resin prepared by the method can be used as a coating agent and a repairing agent for natural leather and artificial leather. The modified waterborne polyurethane coating agent overcomes the defects of hot sticking and cold brittleness of an acrylic emulsion coating agent, and the treated leather has soft, smooth, plump and bright handfeel and strong real leather feeling, can greatly improve the grade of leather and enhance the market competitiveness.

The traditional waterborne polyurethane is linear and thermoplastic, and a chain extender and a hydrophilic chain extender are added to introduce a trifunctional monomer to form proper branches, so that the strength, hardness, water resistance and solvent resistance of the waterborne polyurethane are improved.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Example 1

The technical scheme of the invention is that the HDPE hot melt powder modified waterborne polyurethane resin comprises the following components in parts by weight: 50 parts of diisocyanate, 30 parts of oligomer polyol, 17 parts of diluent, 20 parts of HDPE hot melt powder, 8 parts of triethylamine, 10 parts of neutralizer, 7 parts of hydrophilic modifier, 2 parts of chain extender, 0.4 part of catalyst and 80 parts of deionized water.

The diisocyanate is a mixture of toluene diisocyanate, 4' -diphenylmethane diisocyanate and isophorone diisocyanate. The oligomer polyalcohol is a mixture of polycarbonate dihydric alcohol, polypropylene oxide polyalcohol, polyethylene oxide dihydric alcohol, polytetrahydrofuran dihydric alcohol, polyethylene glycol adipate dihydric alcohol and polyethylene glycol adipate dihydric alcohol. The diluent is a mixture of acetone and butanone. The hydrophilic modifier is a mixture of 2-hydroxypropionic acid and 2-pyrrolidone. The chain extender is a mixture of 1, 4-butanediol, 1, 6-hexanediol, ethylene glycol, 1, 2-propanediol, diethylene glycol, trimethylolpropane, ethylenediamine and diethylenetriamine. The HDPE hot melt powder is HDPE hot melt powder with the hot melt temperature of 120 ℃.

Example 2

The technical scheme of the invention is that the HDPE hot melt powder modified waterborne polyurethane resin comprises the following components in parts by weight: 40 parts of diisocyanate, 25 parts of oligomer polyol, 15 parts of diluent, 10 parts of HDPE hot melt powder, 6 parts of triethylamine, 5 parts of neutralizer, 5 parts of hydrophilic modifier, 1 part of chain extender, 0.2 part of catalyst and 60 parts of deionized water.

The diisocyanate is a mixture of toluene diisocyanate, 4 '-diphenylmethane diisocyanate, and 4,4' -dicyclohexylmethane diisocyanate. The oligomer polyalcohol is a mixture of polycarbonate dihydric alcohol, polytetrahydrofuran dihydric alcohol, polyethylene glycol adipate dihydric alcohol and neopentyl glycol adipate dihydric alcohol. The diluent is a mixture of butanone and N-methyl pyrrolidone. The hydrophilic modifier is a mixture of 2-pyrrolidone and 3-hydroxypropionic acid. The chain extender is a mixture of ethylene glycol, 1, 2-propylene glycol, diethylene glycol, trimethylolpropane, isophorone diamine and sulfamate. The HDPE hot melt powder is HDPE hot melt powder with the hot melt temperature of 130 ℃.

Example 3

The technical scheme of the invention is that the HDPE hot melt powder modified waterborne polyurethane resin comprises the following components in parts by weight: 55 parts of diisocyanate, 40 parts of oligomer polyol, 20 parts of diluent, 30 parts of HDPE hot melt powder, 10 parts of triethylamine, 15 parts of neutralizer, 8 parts of hydrophilic modifier, 3 parts of chain extender, 0.5 part of catalyst and 100 parts of deionized water.

The diisocyanate is a mixture of 4,4 '-diphenylmethane diisocyanate, isophorone diisocyanate, and 4,4' -dicyclohexylmethane diisocyanate. The oligomer polyalcohol is a mixture of polycarbonate dihydric alcohol, polyoxyethylene dihydric alcohol, polytetrahydrofuran dihydric alcohol, polyethylene glycol adipate dihydric alcohol and polyethylene glycol adipate dihydric alcohol. The diluent is a mixture of butanone and N-methyl pyrrolidone. The hydrophilic modifier is a mixture of 2-pyrrolidone and 2-hydroxybutyric acid. The chain extender is a mixture of 1, 4-butanediol, ethylene glycol, 1, 2-propanediol, diethylene glycol, ethylenediamine, diethylenetriamine and isophorone diamine. The HDPE hot melt powder is HDPE hot melt powder with the hot melt temperature of 100 ℃.

Example 4

The technical scheme of the invention is that the HDPE hot melt powder modified waterborne polyurethane resin comprises the following components in parts by weight: 40 parts of diisocyanate, 40 parts of oligomer polyol, 20 parts of diluent, 10 parts of HDPE hot melt powder, 6 parts of triethylamine, 5 parts of neutralizer, 8 parts of hydrophilic modifier, 1 part of chain extender, 0.5 part of catalyst and 60 parts of deionized water.

The oligomer polyalcohol is a mixture of polycarbonate dihydric alcohol, polypropylene oxide polyalcohol, polyethylene oxide dihydric alcohol, polytetrahydrofuran dihydric alcohol, polyethylene glycol adipate dihydric alcohol and neopentyl glycol adipate dihydric alcohol. The diluent is a mixture of acetone, butanone and N-methyl pyrrolidone. The hydrophilic modifier is a mixture of 2-hydroxypropionic acid, 2-pyrrolidone, 3-hydroxypropionic acid and 2-hydroxybutyric acid. The chain extender is a mixture of 1, 4-butanediol, 1, 6-hexanediol, ethylene glycol, 1, 2-propanediol, diethylene glycol, trimethylolpropane, ethylenediamine, diethylenetriamine, isophoronediamine and sulfamate. The HDPE hot melt powder is HDPE hot melt powder with the hot melt temperature of 110 ℃.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.