Aqueous urethane-urea resin composition and production method, and, reactive emulsifier and emulsification method

A resin composition, urethane technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of removing organic solvents, uneconomical, complicated operations, etc., and achieves excellent productivity, fine particle size, and storage. Excellent stability

Active Publication Date: 2016-09-28
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very uneconomical to use a lot of energy and complicated operations when removing the solvent, and it is difficult to completely remove the used organic solvent from the obtained water-based polyurethane resin

Method used

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  • Aqueous urethane-urea resin composition and production method, and, reactive emulsifier and emulsification method
  • Aqueous urethane-urea resin composition and production method, and, reactive emulsifier and emulsification method
  • Aqueous urethane-urea resin composition and production method, and, reactive emulsifier and emulsification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061]Add 225 parts of difunctional polypropylene glycol (the number average molecular weight is 750), 13.4 parts of dimethylol propionic acid, and 177.9 parts of isophorone diisocyanate, and carry out the reaction for 60 minutes at a temperature of 90° C. to obtain an isocyanate group content of 8.1%, a urethane prepolymer having a carboxylic acid value of 13.5 mgKOH / g. After cooling the obtained urethane prepolymer to 60° C., 10.1 parts of triethylamine was mixed, and then 670 parts of emulsified water (20° C.) was added, and the mixture was mixed with a homomixer (manufactured by Primix, Inc. Homomixer MARK2), the same as in the following Examples 2 to 11 and Comparative Synthesis Example 1 to Comparative Synthesis Example 3) mixed and emulsified. The emulsion temperature is 30°C. Then, an aqueous solution obtained by diluting 22 parts of ethylenediamine with 198 parts of water was added to increase the molecular weight. The obtained emulsion had a non-volatile content of...

Embodiment 2

[0063] Add 165 parts of polytetramethylene glycol (the number average molecular weight is 1000), 13.4 parts of dimethylolpropionic acid, and 120.8 parts of isophorone diisocyanate, and react at a temperature of 90°C for 60 minutes to obtain isocyanate groups A urethane prepolymer having a content of 7.8% and a carboxylic acid value of 18.7 mgKOH / g. After cooling the obtained urethane prepolymer to 60° C., 10.1 parts of triethylamine were mixed, and 390 parts of emulsified water (20° C.) were added thereto, and mixed and emulsified with a homomixer. The temperature of its emulsion is 31°C. Then, an aqueous solution obtained by diluting 15 parts of ethylenediamine with 60 parts of water was added to increase the molecular weight. The obtained emulsion had a non-volatile content of 40.6%, a particle diameter of 0.06 µm, and a viscosity of 60 mPa·s / 20°C.

Embodiment 3

[0065] Except using the polyester polyol (the number average molecular weight is 1000) that contains 3-methyl-1,5-pentanediol and adipic acid, in the same manner as in Example 2, an isocyanate group content of 7.9%, a carboxyl group A urethane prepolymer having an acid value of 18.7 mgKOH / g. After cooling the obtained urethane prepolymer to 60° C., 10.1 parts of triethylamine were mixed, and 390 parts of emulsified water (20° C.) were added thereto, and mixed and emulsified with a homomixer. The emulsion temperature is 30°C. Then, an aqueous solution obtained by diluting 15 parts of ethylenediamine with 60 parts of water was added to increase the molecular weight. The obtained emulsion had a non-volatile content of 40.6%, a particle diameter of 0.09 µm, and a viscosity of 50 mPa·s / 20°C.

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Abstract

Provided are an aqueous urethane-urea resin composition and a production method therefor, allowing for the production of an aqueous urethane-urea resin composition having a refined particle diameter, excellent storage stability, and no less capabilities than in prior art, even without using an organic solvent, and whereof the productivity is excellent, as no organic solvent is used. The invention relates to the aqueous urethane-urea resin composition comprising an isocyanate monomer and an urethane prepolymer containing no hydrophilic groups, which have been emulsified and dispersed in water in the presence of an adduct of dialkanol alkanoic acid having an isocyanate at each of the two ends, and polymerized with a multivalent amine compound. In the mixture comprising the isocyanate monomer, the urethane prepolymer containing no hydrophilic groups, and the adduct of dialcanol alkanoic acid having an isocyanate at each of the two ends, the amount of residual NCO groups is between 3.5 and 9.5 percent by mass inclusive.

Description

technical field [0001] The present invention relates to a water-based urethane urea resin composition and a method for producing the same. In addition, the present invention also relates to a reactive emulsifier and an emulsification method. Background technique [0002] Conventionally, water-based polyurethane resins have been used in a wide range of applications as materials that can be used as adhesives, coating agents, paints, modifiers, adhesives, and the like. As such a water-based polyurethane resin, it is known that the method of self-emulsifying and dispersing the urethane resin skeleton with an anionic, cationic, nonionic, and other hydrophilic groups can make the particle size finer, and Excellent performance. [0003] Water-based resins are widely used in various fields from the viewpoint of safety and sanitation, environmental protection, and resource conservation. Usually, in the manufacture of water-based polyurethane resin, a hydrophilic group-containing u...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08G18/00C08G18/10C08G18/32C08G18/72
CPCC08G18/0823C08G18/4238C08G18/4825C08G18/4854C08G18/6651C08G18/6685C08G18/755C08G18/758C08G2170/80C09D175/04C08G18/12C08G18/3228
Inventor和田秀一
OwnerDAI ICHI KOGYO SEIYAKU CO LTD