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Solvent-free polyurethane adhesive layer resin for football leather and its preparation method and application

A solvent-free polyurethane and bonding layer technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems that the quality of finished leather cannot meet the standards, and achieve improved processing performance, good fluidity, Excellent impact resistance

Active Publication Date: 2021-06-04
HEFEI ANLI POLYURETHANE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the production and processing of football leather, the base materials commonly used in the market for football leather (such as foam sponge TPE) will shrink when the temperature exceeds 80°C, resulting in the quality of the finished leather not meeting the standard

Method used

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  • Solvent-free polyurethane adhesive layer resin for football leather and its preparation method and application
  • Solvent-free polyurethane adhesive layer resin for football leather and its preparation method and application
  • Solvent-free polyurethane adhesive layer resin for football leather and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of polyester polyol

[0044]A four-necked flask equipped with a magnetic stirrer, a thermometer, a nitrogen inlet tube and a condenser tube was installed in a jacketed resistance heater, and 90 parts of adipic acid, 50 parts of diethylene glycol and 205 parts of castor were added to the flask. Sesame oil, vent nitrogen to get rid of the air in the flask; then gradually heat up under the protection of nitrogen to carry out dehydration polycondensation reaction, control the top temperature of the condenser tube during the temperature rise process to be lower than 105°C; when the acid value of the reaction solution is 5mgKOH / g, Add 0.02 parts of tetraisopropyl titanate to continue the reaction for 0.5h, then gradually heat up to 200°C, vacuum degree ≥ 0.095MPa, continue the reaction to make the hydroxyl value of the reaction solution reach 56mgKOH / g, and obtain a polyester multi-component with a molecular weight of 2000 alcohol;

[0045] (2) Preparation of...

Embodiment 2

[0057] (1) Preparation of polyester polyol

[0058] Equipped with magnetic stirrer, thermometer, N 2 The four-necked flask with the inlet pipe and the condenser pipe is installed in a jacketed resistance heater, and 230 parts of adipic acid, 158 parts of 1,4-butanediol and 12 parts of trimethylolpropane are added to the flask, and the flask is vented with nitrogen. Then, under the protection of nitrogen, gradually heat up the temperature to carry out the dehydration polycondensation reaction, and control the top temperature of the condenser tube to 105°C during the temperature rise process; when the acid value of the reaction liquid is 10mgKOH / g, add 0.04 parts of tetraisopropyl titanate Continue to react with the ester catalyst for 1 hour, then gradually heat up to 260°C, vacuum degree ≥ 0.095MPa, continue the reaction so that the hydroxyl value of the reaction solution reaches 74.8mgKOH / g, and obtain a polyester polyol with a molecular weight of 1500;

[0059] (2) Preparati...

Embodiment 3

[0071] (1) Preparation of polyester polyol

[0072] Equipped with magnetic stirrer, thermometer, N 2 The four-necked flask with the inlet pipe and the condenser pipe is installed in a jacketed resistance heater, and 200 parts of adipic acid, 100 parts of 3-methyl-1,5-pentanediol and 35 parts of pentaerythritol are added to the flask, and nitrogen gas is used to remove The air in the flask; then gradually heated up under the protection of nitrogen to carry out dehydration polycondensation reaction, during the temperature rise process, the temperature at the top of the condenser tube was controlled to be lower than 105°C; when the acid value of the reaction solution was 20mgKOH / g, add 0.06 parts of titanic acid Continue to react tetrabutyl ester for 1.5h, then gradually heat up to 280°C, vacuum degree ≥ 0.095MPa, continue the reaction to make the hydroxyl value reach 112mgKOH / g, and obtain a polyester polyol with a molecular weight of 1000;

[0073] (2) Preparation of Component...

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Abstract

The invention discloses a solvent-free polyurethane adhesive layer resin for football leather and a preparation method and application thereof. The resin is prepared by mixing component A and component B at a mass ratio of 1:2 to 2:1. The solvent-free polyurethane resin prepared by the invention does not contain any organic solvents, can be quickly reacted and solidified at a low temperature of 60-80° C., and has low production energy consumption. When the polyurethane resin is applied to the adhesive layer of football leather, it can be processed and formed at one time. The leather sample does not need to be ripened with paper, and the production efficiency is high. The football leather products made of this polyurethane resin have high peel strength (≥12N / 3cm, 150mm / min), good pattern setting, good impact resistance (>6000 times, GB / T 22892-2008).

Description

technical field [0001] The invention belongs to the field of functional polyurethane synthetic leather, and specifically relates to a solvent-free polyurethane adhesive layer resin for football leather, and also relates to a preparation method and application. Background technique [0002] Nowadays, in the production process of football leather, the adhesive layer resin used for bonding the spherical surface and the inner elastic substrate is mostly solvent-based polyurethane resin. In the bonding process, it is difficult to completely remove the organic solvent used, resulting in residual solvent in the finished leather. With the increasingly stringent national environmental protection policies and the increasing awareness of environmental protection, it is the general trend to develop more environmentally friendly polyurethane resins for the adhesive layer of football leather. [0003] In the synthetic leather industry, the environmentally friendly polyurethane resins cur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C08G18/32C08G18/40C08G18/42C08G18/48C08G18/66
CPCC08G18/3206C08G18/3275C08G18/4018C08G18/4202C08G18/4288C08G18/4825C08G18/4854C08G18/6644C08G18/6677C09J175/04
Inventor 姚克俭王海峰李晓飞孔为青
Owner HEFEI ANLI POLYURETHANE NEW MATERIAL
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