Polyurethane resin

一种聚氨酯树脂、氨基甲酸酯的技术，应用在聚氨酯树脂领域，能够解决成本高、制造工序复杂、低模量等问题，达到简单制造、廉价且制造、优异胶粘性的效果

Active Publication Date: 2012-11-21
SUNSTAR GIKEN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a polyurethane resin with low modulus and high elongation is produced by the above-mentioned method, the viscosity of the polyurethane resin increases and the handling properties deteriorate, and the production process is complicated and expensive.

Method used

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  • Polyurethane resin
  • Polyurethane resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] 458 g of polyoxypropylene monoalcohol (manufactured by Asahi Glass Co., Ltd. PML-S-1005) with a number average molecular weight of 5000, 462 g of polyoxypropylene diol with a number average molecular weight of 13000 (manufactured by Asahi Glass Urethane Co., Ltd. PML-4013), isophorone 53 g of diisocyanate (Desmodur I manufactured by Sumika Bayer) were mixed. This mixture was reacted at 90° C. for 24 hours to obtain a polyurethane prepolymer.

[0077] 21 g of aminoethylaminopropylmethyldimethoxysilane (KBM-602 manufactured by Shin-Etsu Chemical Co., Ltd.) was added to 515 g of this prepolymer, and stirred at 30° C. for 30 minutes. Then, 7.3 g of aminopropylmethyldimethoxysilane (KBM-902 manufactured by Shin-Etsu Chemical Co., Ltd.) and 0.3 g of methanol were put into the prepolymer, and stirred at 30° C. for 30 minutes to obtain a polyurethane resin. .

Embodiment 2

[0079]458 g of polyoxypropylene monoalcohol (manufactured by Asahi Glass Co., Ltd. PML-S-1005) with a number average molecular weight of 5000, 462 g of polyoxypropylene diol with a number average molecular weight of 13000 (manufactured by Asahi Glass Urethane Co., Ltd. PML-4013), isophorone 53 g of diisocyanate (Desmodur I manufactured by Sumika Bayer) were mixed. This mixture was reacted at 90° C. for 24 hours to obtain a polyurethane prepolymer.

[0080] 21 g of aminoethylaminopropylmethyltrimethoxysilane (KBM-603 manufactured by Shin-Etsu Chemical Co., Ltd.) was added to 515 g of this prepolymer, and stirred at 30° C. for 30 minutes. Then, 7.3 g of aminopropylmethyldimethoxysilane (KBM-902 manufactured by Shin-Etsu Chemical Co., Ltd.) and 0.3 g of methanol were put into the prepolymer, and stirred at 30° C. for 30 minutes to obtain a polyurethane resin. .

Embodiment 3 and 4、 and comparative example 3

[0089] Base

[0090] The ingredients with the weights shown in Table 1 were put into a mixing mixer equipped with a heating and pressure reducing device, and stirred for 30 minutes. Then, the mixture was mixed and stirred at 60° C. for 30 minutes, and then stirred and mixed for 20 minutes under reduced vacuum to obtain a base.

[0091] Hardener

[0092] The curing catalyst and calcium carbonate of the weight shown in Table 1 were mixed at room temperature, and mixed and stirred for 10 minutes to obtain a curing agent.

[0093] The base prepared as described above was mixed with a curing agent at a ratio of 100:10 (weight ratio) to obtain a curable composition.

[0094] [Table 1]

[0095]

[0096] Unit: [g]

[0097] (Note 1) Manufactured by Matsumoto Yushi Co., Ltd., average particle size 60 μm, Tg 140°C

[0098] (Note 2) Ground calcium carbonate, "WHITON SB" manufactured by Shiraishi Calcium Co., Ltd., average particle size 3.7 μm

[0099] (Note 3) "Calfine 500" manuf...

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Abstract

Disclosed is a solvent-free polyurethane resin that has superior adhesive properties, physical properties, handling properties and storage stability properties and can be used suitably in curable compositions having the physical properties of a low modulus and high elongation after curing. Also disclosed is a method for producing this polyurethane resin easily and inexpensively. The average number of terminal hydroxyl groups in this polyurethane resin is 1.3 - 2.1, and the polyurethane resin is obtained by reacting a urethane prepolymer, which is obtained by reacting a mixture of a mono-ol and polyol with a polyisocyanate, and a compound having cross-linked silyl groups as well as imino groups and amino groups.

Description

technical field [0001] This patent application claims priority to Japanese Patent Application No. 2010-60779 (filing date: March 17, 2010), and all of them are hereby incorporated by reference into this specification. [0002] The present invention relates to a polyurethane resin, in particular, to a solvent-free polyurethane resin, which is excellent in curability with physical properties of low modulus and high elongation, and a method for producing the same. Composition, and has excellent adhesive properties, physical properties, handling and storage stability. Background technique [0003] Conventionally, it is known that a polyurethane resin produced from a urethane prepolymer to which a silane compound having an amino group in the molecule is added at the end has an excellent Physical properties, such as excellent ductility and toughness (Patent Documents 1 and 2). However, in the above-mentioned polyurethane resin, the prepolymer exhibits basicity due to the seconda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08G18/32C08G18/48
CPCC08G18/4825C08G18/755C08G2190/00C08G18/283C09J175/04C08G18/12C08G18/289C08G18/3893
Inventor 中西群牛尼伸也伊藤正比吕
Owner SUNSTAR GIKEN KK
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