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Package of polycarbonate diol, saving method, and transporting method

A polycarbonate diol, packaging technology, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve problems such as the reduction of commodity value, and achieve the effect of inhibiting the intensification of coloring

Active Publication Date: 2017-02-01
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polycarbonate diol produced by such a general method is usually slightly colored, so when it is used as a raw material for polyurethane or urethane acrylate, the obtained polyurethane, etc. may also be colored, and the commercial value may be lowered.

Method used

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  • Package of polycarbonate diol, saving method, and transporting method
  • Package of polycarbonate diol, saving method, and transporting method
  • Package of polycarbonate diol, saving method, and transporting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0163] (storage test)

[0164] As packing containers for packing polycarbonate diol, 10 steel drums (manufactured by JFE CONTAINER CO., LTD.) (No. 1 to No. 10) were prepared. A layer of iron phosphate was formed on the portion of the packaging container that was in contact with the polycarbonate diol. 200 kg of polycarbonate diol (product name: T5652, manufactured by Asahi Kasei Chemical Co., Ltd.) was put into this packaging container, and this packaging container was sealed to obtain a package. The obtained packages were stored in an indoor warehouse (room temperature 20±20° C.) for one year. Before this storage, the content of the cyclic carbonate and the cyclic ether in the polycarbonate diol was analyzed by the method described above, and the total amount was 0.3% by mass based on 100% by mass of the polycarbonate diol. The Hazen chroma (APHA) of the polycarbonate diol before storage was 10, and the APHA of the polycarbonate diol after storage in an indoor warehouse (ro...

Embodiment 2

[0166] (storage test)

[0167] As packing containers for packing polycarbonate diol, 10 steel drums (manufactured by JFE CONTAINER CO., LTD.) (No. 1 to No. 10) were prepared. A zinc phosphate layer was formed on the part of the packaging container that was in contact with the polycarbonate diol. 200 kg of polycarbonate diol (product name: T5652, Asahi Kasei Chemical Co., Ltd.) was put into the packaging container, and the packaging container was sealed to obtain a package. The obtained packages were stored in an indoor warehouse (room temperature 20±20° C.) for one year. The Hazen Chromaticity (APHA) of the polycarbonate diol before the above storage is 10, and the maximum APHA of the polycarbonate diol after storage in an indoor warehouse (room temperature 20±20°C) for one year is 1 barrel. , the rest remain unchanged, still 10. The results are shown in Table 1.

Embodiment 3

[0174] (storage test)

[0175] A storage test was performed in the same manner as in Example 1, except that it was stored in a heating room at 60° C. for 3 months instead of storage in an indoor warehouse. The maximum value of APHA of the polycarbonate diol after this storage test was 30. The results are shown in Table 2.

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PUM

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Abstract

A package of polycarbonate diol, and a saving method and a transporting method. An object of the present invention is to provide a technique for suppressing the coloring of polycarbonate diol in a package. The present invention is a package which is a package in which a polycarbonate diol is packaged in a packaging container, and a portion of a packaging container that contacts a polycarbonate diol is formed with a layer containing a metal salt of phosphoric acid or resin layer.

Description

technical field [0001] The present invention relates to a polycarbonate diol package, storage method, and transportation method. Background technique [0002] Polycarbonate diol is generally produced by a method of transesterifying a carbonate compound and a dihydroxy compound. The polycarbonate diol produced by such a general method is usually slightly colored, and therefore, when used as a raw material of polyurethane or urethane acrylate, the obtained polyurethane and the like are also colored, and the commercial value may be lowered. Therefore, various methods for reducing coloration of polycarbonate diols have been proposed. For example, Patent Document 1 describes a method in which a polycarbonate polyol is produced by transesterification of a diaryl carbonate and an aliphatic dihydroxy compound, first using a hydrorefined aliphatic dihydroxy compound, thereby The coloring of the obtained polycarbonate diol is reduced. In addition, for example, Patent Document 2 des...

Claims

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Application Information

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IPC IPC(8): C09D5/08C09D1/00C09D163/00C09D161/06
CPCC09D1/00C09D5/08C09D161/06C09D163/00
Inventor 高瀬俊介星野恵理子
Owner ASAHI KASEI KK
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