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

Polycarbonate Diols Containing Carbonate Compounds

A polycarbonate diol, compound technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of strong interaction, damage to the surface smoothness of the coating film, etc., to achieve the effect of smooth coating

Active Publication Date: 2017-08-22
ASAHI KASEI KK
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when polycarbonate diol is used as a constituent material of paint, the interaction between polycarbonate diol bonds is strong, so the smoothness of the coating film surface may be impaired

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 Diols Containing Carbonate Compounds
  • Polycarbonate Diols Containing Carbonate Compounds
  • Polycarbonate Diols Containing Carbonate Compounds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0190] 640g (7.3mol) of ethylene carbonate, 400g (3.9mol) of 1,5-pentanediol, 410g (3.5mol) of ) 1,6-hexanediol. Further, 0.35 g of titanium tetraisopropoxide was added as a catalyst to the flask, and the mixture in the flask was stirred and heated under normal pressure to start the reaction. The reaction initiation temperature was set at 140° C., and the reaction was performed at this temperature for 15 hours. Then, the reaction temperature was gradually raised to 160° C. over 15 hours, and the reaction was performed while distilling off the mixture of ethylene glycol and ethylene carbonate produced. Then, the pressure in the said flask was reduced to 10 kPa, and reaction was further performed at 164 degreeC for 15 hours, distilling off the mixture of diol and ethylene carbonate. Then, 0.39 g of 2-ethylhexyl acid phosphate was added as a phosphorus compound to the flask, and the mixture in the flask was heated at 120° C. for 5 hours to obtain polycarbonate diol. Add 2 g of...

Embodiment 2

[0192] The amount of 1,3,9,11-tetraoxacycloheptadecyl-2,10-dione (the carbonate compound in the case of l=5 and m=6 in the formula (B)) to be added is set to The polycarbonate diol composition was obtained in the same manner as in Example 1 except that it was 0.5 g. Table 1 shows the results of analyzing the obtained polycarbonate diol composition. This polycarbonate diol composition is abbreviated as PC-2. The obtained polycarbonate diol has a repeating unit represented by formula (A) and a terminal hydroxyl group, and R and the ratio of each repeating unit are shown in Table 1.

Embodiment 3

[0194] The amount of 1,3,9,11-tetraoxacycloheptadecyl-2,10-dione (the carbonate compound in the case of l=5 and m=6 in the formula (B)) to be added is set to 11 g, except that, in the same manner as in Example 1, a polycarbonate diol composition was obtained. Table 1 shows the results of analyzing the obtained polycarbonate diol composition. This polycarbonate diol composition is abbreviated as PC-3. The obtained polycarbonate diol has a repeating unit represented by formula (A) and a terminal hydroxyl group, and R and the ratio of each repeating unit are shown in Table 1.

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 present invention relates to a polycarbonate diol containing a carbonate compound, and an object of the present invention is to provide a polycarbonate diol composition suitable as a coating material, an adhesive material, or a thermoplastic elastomer raw material. An object of the present invention is to provide a polycarbonate diol composition capable of obtaining a smooth coating film without impairing chemical resistance when used as a constituent material of a paint. Another object of the present invention is to provide a polycarbonate diol composition capable of obtaining polyurethane excellent in oil resistance without impairing mechanical strength when used as a raw material of polyurethane. The polycarbonate diol composition of the present invention contains a polycarbonate diol containing a repeating unit represented by a specific formula and a terminal hydroxyl group, and 0.05 to 5% by weight of a carbonate compound represented by the specific formula.

Description

technical field [0001] This invention relates to polycarbonate diols. Background technique [0002] Polycarbonate diols are known, for example, as soft segments of polyurethanes and thermoplastic elastomers, and as raw materials excellent in hydrolysis resistance, light resistance, oxidative degradation resistance, heat resistance, and the like. However, when polycarbonate diol is used as a constituent material of paint, the interaction between polycarbonate diol bonds is strong, and thus the smoothness of the coating film surface may be impaired. [0003] On the other hand, various additives having a cyclic carbonate structure are disclosed. For example, an additive having a cyclic carbonate structure that reduces the viscosity of an epoxy resin without significantly deteriorating mechanical properties and / or solvent resistance is disclosed (for example, refer to Patent Document 1). In addition, novel cyclic carbonates useful as solvents such as electrolytic solutions, po...

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): C08G18/44
CPCC08G18/44C08G18/10C08G18/246C08G18/73C08G18/792C08K3/02C08K5/06C08K5/109C09D175/06
Inventor 上野英三郎
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