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Polycarbonate diol containing carbonate compound

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

Active Publication Date: 2015-07-01
ASAHI KASEI KK
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  • 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

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  • Polycarbonate diol containing carbonate compound
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  • Polycarbonate diol containing carbonate compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0190] Put 640g (7.3mol) ethylene carbonate, 400g (3.9mol) 1,5-pentanediol, 410g (3.5mol) into a 2L glass flask equipped with a rectification tower filled with regular packing and a stirring device ) 1,6-Hexanediol. 0.35 g of titanium tetraisopropoxide as a catalyst was further added to the flask, and the mixture in the flask was stirred and heated under normal pressure to start the reaction. The reaction start temperature was set to 140°C, and the reaction was performed at this temperature for 15 hours. Then, the reaction temperature was slowly raised to 160°C over 15 hours, and the reaction was carried out while distilling off the produced mixture of ethylene glycol and ethylene carbonate. Then, the pressure in the flask was reduced to 10 kPa, and the reaction was carried out at 164° C. for a further 15 hours while distilling off the mixture of the diol and ethylene carbonate. Then, 0.39 g of 2-ethylhexyl acid phosphate was added as a phosphorus compound to the flask, and t...

Embodiment 2

[0192] Let the addition amount of 1,3,9,11-tetraoxacycloheptadecanyl-2,10-dione (in formula (B), the carbonate compound in the case of l=5 and m=6) be Except 0.5 g, the same method as in Example 1 was used to obtain a polycarbonate diol composition. Table 1 shows the result 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 the formula (A) and a terminal hydroxyl group, and the R and the ratio of each repeating unit are shown in Table 1.

Embodiment 3

[0194] Let the addition amount of 1,3,9,11-tetraoxacycloheptadecyl-2,10-dione (in formula (B), the carbonate compound in the case of l=5 and m=6) be Except 11 g, the same method as in Example 1 was used to obtain a polycarbonate diol composition. Table 1 shows the result 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 the formula (A) and a terminal hydroxyl group, and the R and the ratio of each repeating unit are shown in Table 1.

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PUM

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Abstract

The invention relates to polycarbonate diol containing a carbonate compound, aiming to provide a polycarbonate diol compound which is suitable to be used as materials of a coating and a binder, or a raw material as a thermoplastic elastomer. According to the invention, the polycarbonate diol compound can obtain a smooth coating film when supplying forming materials used for a coating material, and can not damage chemical reagent performance. In addition, the polycarbonate diol compound can obtain excellent polyurethane when used as a raw material for polyurethane, but not damage mechanical strength. The polycarbonate diol compound includes a repeat unit and a rear end hydroxyl polycarbonate diol represented by a specific formula and 0.05-5 weight % of carbonic acid ester compounds represented by a specific formula.

Description

Technical field [0001] The present invention relates to polycarbonate diols. Background technique [0002] Polycarbonate diols are known, for example, as soft segments of polyurethanes, thermoplastic elastomers, etc., as raw materials excellent in hydrolysis resistance, light resistance, oxidation degradation resistance, heat resistance, and the like. However, when polycarbonate diol is used as a constituent material of a coating material, the interaction between the polycarbonate diol bonds is strong, and therefore 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 (for example, refer to Patent Document 1). In addition, new cyclic carbonates useful as solvents such as electrolyte solution...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D7/12C08G18/44
CPCC08K5/06C08L75/04C08K5/04C09D175/04C09D169/00C08L69/00C08G18/44C08G18/10C08G18/246C08G18/73C08G18/792C08K3/02C08K5/109C09D175/06C08G18/3234C08G18/3206
Inventor 上野英三郎
Owner ASAHI KASEI KK
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