Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polycarbonate diol, thermoplastic polyurethane, coating composition and coating film

A technology of polycarbonate diol and composition, applied in the direction of polyurea/polyurethane coating, coating, etc., can solve the problem of requiring a large amount of solvent, and achieve the effect of excellent wear resistance and excellent chemical resistance

Active Publication Date: 2016-06-29
ASAHI KASEI KK
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polycarbonate diol mainly made of 1,6-hexanediol exists in a solid state at room temperature due to its high crystallinity. Disadvantages such as handling barriers such as a large amount of solvents

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
  • Polycarbonate diol, thermoplastic polyurethane, coating composition and coating film
  • Polycarbonate diol, thermoplastic polyurethane, coating composition and coating film
  • Polycarbonate diol, thermoplastic polyurethane, coating composition and coating film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] 840 g (7.1 mol) of diethyl carbonate, 240 g (2.7 mol) of 1,4-butanediol, 1,5-pentanediol, and 360 g (3.5 mol) of alcohol and 175 g (1.5 mol) of 1,6-hexanediol. Furthermore, 0.5 g of titanium tetrabutoxide was added as a catalyst, and it stirred and heated under normal pressure. Next, the reaction temperature was gradually raised from 150° C. to 190° C., and the reaction was carried out for 15 hours while distilling off a mixture of ethanol and diethyl carbonate produced. Thereafter, the reaction was further performed at 190° C. for 8 hours while reducing the pressure to 15 kPa and distilling off a mixture of diol and diethyl carbonate. Table 1 shows the results of analyzing the obtained polycarbonate diol. This polycarbonate diol is abbreviated as PC-1.

Embodiment 2

[0101] The reaction was carried out using the apparatus shown in Example 1. 760 g (8.6 mol) of ethylene carbonate, 210 g (2.3 mol) of 1,4-butanediol, 550 g (5.3 mol) of 1,5-pentanediol, and 115 g (1.0 mol) of 1,6-hexanediol were added. Furthermore, 0.5 g of titanium tetrabutoxide was added as a catalyst, and it stirred and heated under normal pressure. Next, the reaction temperature was gradually raised from 150° C. to 190° C., and the reaction was carried out for 15 hours while distilling off a mixture of ethylene glycol and ethylene carbonate generated. Thereafter, the pressure was reduced to 14 kPa, and the reaction was further performed at 190° C. for 8 hours while distilling off diol and ethylene carbonate. Table 1 shows the analysis results of the obtained polycarbonate diol. The polycarbonate diol is abbreviated as PC-2.

Embodiment 3

[0103] Add 740g (8.4mol) of ethylene carbonate, 170g (1.9mol) of 1,4-butanediol, 390g (3.8mol) of 1,5-pentanediol and 330g (2.8mol) of 1,6-hexanediol, In addition, the reaction was performed under the conditions shown in Example 2 using the apparatus of Example 1. Table 1 shows the analysis results of the obtained polycarbonate diol. The polycarbonate diol is abbreviated as PC-3.

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 provides polycarbonate diol, thermoplastic polyurethane, a coating composition and a coating film. The polycarbonate diol has excellent treatability and develops good compatibility with a curing agent, and further provides the thermoplastic polyurethane that is tough and has excellent chemical resistance, provides the coating film that has excellent friction resistance, chemical resistance and transparency as the coating composition. According to the polycarbonate diol, at least one portion of repetitive units presented by the formula (A) is repetitive units presented by the formula (B), (C) and (D); the sum of the repetitive units presented by the formula (B), (C) and (D) is 80-100 mol% of the repetitive units presented by the formula (A); relative to the sum of the repetitive units presented by the formula (B), (C) and (D), the repetitive unit presented by the formula (B) is 18-40 mol%; and a ratio of the repetitive units presented by the formula (C) and (D) is 40:60-85:15 by molar ratio.

Description

technical field [0001] The present invention relates to polycarbonate diols, thermoplastic polyurethanes, coating compositions and coating films. Background technique [0002] Polycarbonate diol is known to be a raw material excellent in hydrolysis resistance, light resistance, oxidative degradation resistance, heat resistance, etc. as a soft segment of, for example, polyurethane, thermoplastic elastomer, and the like. However, polycarbonate diol mainly made of 1,6-hexanediol exists in a solid state at room temperature due to its high crystallinity. Disadvantages such as handling barriers such as a large amount of solvents. [0003] In order to solve such disadvantages, various liquid polycarbonate diols have been proposed. For example, there has been proposed a polycarbonate diol in which the diol component consists of 1,6-hexanediol and 1,4-cyclohexanedimethanol and is liquid at normal temperature (for example, refer to Patent Document 1). In addition, it has been propo...

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): C08G64/02C08G64/30C08G18/44C09D175/06
CPCC08G18/06C08G18/44C08G64/02C08L75/04C09D175/04
Inventor 上野英三郎大谷哲也
Owner ASAHI KASEI KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com