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Modified resins and resin compositions

Active Publication Date: 2018-12-04
ASAHI KASEI KOGYO KABUSHIKI KAISHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In this way, polyurethane and polyurea based on the reaction of isocyanate groups are applied to the surface of metal, glass, and plastic as a coating or adhesive to impart functions to the surface. However, for this purpose, the adhesion to the surface must be sufficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0609] Adipic acid dihydrazide and polyisocyanate (DURANATE TPA-100, manufactured by Asahi Kasei Chemical Co., Ltd.) were charged so that the equivalent ratio of isocyanate group to hydrazide group was 1.0, and butyl acetate was mixed to prepare a dispersion with a solid content of 10%. . The dispersion was stirred at 120° C. for 12 hours. Collect a part of the reaction solution with 1 As a result of H-NMR analysis, the peak around 3.3 ppm derived from isocyanate disappeared. After butyl acetate was distilled off with a rotary evaporator, heat resistance was evaluated. The evaluation results are listed in Table 1.

Embodiment 2

[0611] 36 g of hydrazine monohydrate was dissolved in 1 L of isopropanol, cooled to 0° C., and 50 g of hexamethylene diisothiocyanate was added while stirring. The resulting solids are recovered by filtration for use in 1 H-NMR was analyzed, and the result was 4,4'-hexamethylenebisthiosemicarbazide.

[0612] For this 4,4'-hexamethylenebisthiosemicarbazide and polyisocyanate (DURANATE TPA-100, manufactured by Asahi Kasei Chemical Co., Ltd.), the same method as in Example 1 was carried out to evaluate heat resistance. The evaluation results are listed in Table 1.

Embodiment 3

[0614] 36 g of hydrazine monohydrate was dissolved in 1 L of isopropanol, cooled to 0° C., and 50 g of hexamethylene diisocyanate was added while stirring. The resulting solids are recovered by filtration for use in 1 H-NMR is analyzed, and the result is 4,4'-hexamethylenebisemicarbazide.

[0615] For this 4,4'-hexamethylene bisaminocarbazide and polyisocyanate (DURANATE TPA-100, manufactured by Asahi Kasei Chemical Co., Ltd.), the same method as in Example 1 was carried out to evaluate heat resistance. The evaluation results are listed in Table 1.

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PUM

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Abstract

The invention discloses a resin with nitrogen-carbon-sulfur bonds. A nitrogen-carbon-sulfur bond is composed of a nitrogen atom, a carbon atom, and a sulfur atom, these atoms being bonded in that order, and at least one of the bonding of the carbon atom to the sulfur atom and the bonding of the carbon atom to the nitrogen atom is a single bond Bond. When the number average molecular weight of the resin is Mn, and the number of sulfur atoms constituting nitrogen-carbon-sulfur bonds contained in the resin per molecule is n1, Mn is 500 or more, and Mn / n1 is 50 or more and 300 or less.

Description

technical field [0001] The present invention relates to modified resins and resin compositions. Background technique [0002] Isocyanates are known as raw materials for polyurethanes and polyureas. [0003] Polyurethane is produced by the reaction of isocyanate groups and hydroxyl groups. It has excellent tensile strength, abrasion resistance, and oil resistance, and is used in paints, adhesives, and automotive parts. For example, Patent Document 1 discloses a two-component polyurethane coating for packaging films. [0004] Polyurea is produced by the reaction of isocyanate groups and amino groups, and has excellent heat resistance, mechanical strength, and chemical resistance, and is used in injection molded products, films, fibers, and the like. For example, Patent Document 2 discloses a bonding agent using polyurea. [0005] In this way, polyurethane and polyurea based on the reaction of isocyanate groups are applied to the surface of metal, glass, or plastic as a pain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/70C08G18/02C08G18/30C09D5/02C09D201/00
CPCC09D5/02C09D175/04C08G18/3231
Owner ASAHI KASEI KOGYO KABUSHIKI KAISHA