High black vehicle performance polyurethane resin used for leather, and preparation method thereof

A polyurethane resin and color development technology, applied in the fields of synthetic leather materials and synthetic leather polyurethane resin materials, can solve the problems of small molecular weight of dispersant, easy migration, affecting color development effect, etc., and achieve good physical properties, wear resistance and other problems. The effect of improving the performance and improving the color development performance

Active Publication Date: 2019-11-26
ZHEJIANG HUAFON SYNTHETIC RESIN
View PDF13 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the amount of polyurethane dispersants on the market is low, the black color development performance of polyurethane resin for leather is not significantly improved. When the amount is increased, the cost will be greatly increased on the one hand, and the physical properties will be ad

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
  • High black vehicle performance polyurethane resin used for leather, and preparation method thereof
  • High black vehicle performance polyurethane resin used for leather, and preparation method thereof
  • High black vehicle performance polyurethane resin used for leather, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The weight percentage composition of the main polyurethane resin and the auxiliary high black color developing resin is as follows:

[0050]Main body polyurethane resin 70%

[0051] Auxiliary high black color developing resin 30%

[0052] The main polyurethane resin is mainly prepared from the following raw materials in parts by weight:

[0053]

[0054] The preparation method of main body polyurethane resin, comprises the steps:

[0055] (1) Add polypolyol and chain extender to the reaction vessel, then add solvent accounting for 70% of the total amount, add catalyst, heat up to 50°C after mixing, stir for 20 minutes, and mix well;

[0056] (2) Add diisocyanate accounting for 95% of the total amount, heat up to 60°C, and react for 2 hours;

[0057] (3) Add the remaining solvent and diisocyanate until the viscosity of the reaction solution reaches 112Pa·s / 25°C, add an end-capping agent, and stir for 30 minutes to obtain the main polyurethane resin.

[0058] The a...

Embodiment 2

[0070] The weight percentage composition of the main polyurethane resin and the auxiliary high black color developing resin is as follows:

[0071] Main body polyurethane resin 90%

[0072] Auxiliary high black color developing resin 10%

[0073] The main polyurethane resin is mainly prepared from the following raw materials in parts by weight:

[0074]

[0075] The preparation method of main body polyurethane resin, comprises the steps:

[0076] (1) Add polypolyol and chain extender to the reaction vessel, then add solvent accounting for 70% of the total amount, add catalyst, heat up to 50°C after mixing, stir for 30min, and mix well;

[0077] (2) Add diisocyanate accounting for 95% of the total amount, heat up to 60°C, and react for 2 hours;

[0078] (3) Add the remaining solvent and diisocyanate until the viscosity of the reaction solution reaches 106 Pa·s / 25°C, add an end-capping agent, and stir for 30 minutes to obtain the main polyurethane resin.

[0079] The auxi...

Embodiment 3

[0090] The weight percentage composition of the main polyurethane resin and the auxiliary high black color developing resin is as follows:

[0091] Main body polyurethane resin 80%

[0092] Auxiliary high black color developing resin 20%

[0093] The main polyurethane resin is mainly prepared from the following raw materials in parts by weight:

[0094]

[0095] The preparation method of main body polyurethane resin, comprises the steps:

[0096] (1) Add polypolyol and chain extender to the reaction vessel, then add solvent accounting for 70% of the total amount, add catalyst, heat up to 50°C after mixing, stir for 20 minutes, and mix well;

[0097] (2) Add diisocyanate accounting for 95% of the total amount, heat up to 70°C, and react for 2 hours;

[0098] (3) Add the remaining solvent and diisocyanate until the viscosity of the reaction solution reaches 109Pa·s / 25°C, add an end-capping agent, and stir for 30 minutes to obtain the main polyurethane resin.

[0099] The ...

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

No PUM Login to view more

Abstract

The invention discloses a high black vehicle performance polyurethane resin used for leather, and a preparation method thereof. The high black vehicle performance polyurethane resin used for leather is composed of 1 to 30% of auxiliary high black vehicle performance resin and the balance main body polyurethane resin; the main body polyurethane resin is mainly prepared from an isocyanate, a polyol,a chain extender, a solvent, an end-capping reagent, and an auxiliary agent; the auxiliary high black vehicle performance resin is prepared from, by weight, 10 to 50 parts of the polyol of the main body resin, 3 to 15 parts of a polyether polyol, 40 to 90 parts of an aromatic polyester polyol, 30 to 130 parts of a diisocyanate, 5 to 40 parts of diethanolamine, 0 to 30 parts of a chain extender, 0.01 to 0.05 part of a catalyst, 0.1 to 1 part of an end-capping reagent, and 150 to 450 parts of N, N-dimethyl formamide. The high black vehicle performance polyurethane resin is excellent in black vehicle performance, the wear resistance is improved greatly, and the high black vehicle performance polyurethane resin is suitable to be taken as a wet method solvent type polyurethane resin used for leather.

Description

technical field [0001] The invention relates to a method for preparing polyurethane resin for leather with high black color development, and belongs to the technical field of materials for synthetic leather, in particular to the field of polyurethane resin materials for synthetic leather. Background technique [0002] Polyurethane resin synthetic leather has excellent performance, plump feel and appearance similar to natural leather. It is an excellent leather substitute and has a wide range of applications in the fields of shoes, bags, clothing, furniture and other synthetic leather products. . [0003] Because synthetic leather is mainly used as daily consumer goods, people have higher requirements on the appearance of synthetic leather, and synthetic leather with high blackness can bring more excellent appearance effect. Preparation of polyurethane resin for leather with high black color development performance, and adding various carbon black dispersants are the two mos...

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): C08G18/66C08G18/32C08G18/40C08G18/42C08G18/48C08L75/06C08L75/08C08L75/04
CPCC08G18/3206C08G18/3275C08G18/4018C08G18/4211C08G18/4238C08G18/425C08G18/4833C08G18/6607C08G18/6622C08G18/664C08G18/6674C08L75/06C08L75/08C08L75/04
Inventor 潘伟净张初银孙凡马元明吴震彭峰方飞
Owner ZHEJIANG HUAFON SYNTHETIC RESIN
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