Polyurethane resin composition for printing ink binder

A polyurethane resin and composition technology, applied in polyurea/polyurethane coatings, inks, applications, etc., can solve the problems of poor water resistance, alcohol resistance, exudation, residual solvents, etc., and achieve excellent printing properties and printing adaptability.

Active Publication Date: 2016-02-17
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of hydroxycarboxylic acid to the ink, there is a problem of residual solvent, and the water resistance and alcohol bleeding resistance are poor.

Method used

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  • Polyurethane resin composition for printing ink binder
  • Polyurethane resin composition for printing ink binder
  • Polyurethane resin composition for printing ink binder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0065] Hereinafter, although an Example is given and the embodiment of this invention is described in detail, this invention is not limited to these Examples. Hereinafter, "parts" and "%" represent "parts by weight" and "% by weight" unless otherwise noted.

[0066] It should be noted that the hydroxyl value is calculated by converting the amount of hydroxyl groups in 1 g of the resin into mg of potassium hydroxide by acetylating the hydroxyl groups in the resin with an excess acetylating reagent and back-titrating the remaining acid with a base. The value thus obtained; and the value measured in accordance with JIS K0070. The amine value is the number of mg of potassium hydroxide equivalent to the hydrochloric acid equivalent required to neutralize the amino groups contained in 1 g of the resin. The acid value is the number of mg of potassium hydroxide required to neutralize the acid groups contained in 1 g of the resin. The measurement method may be a known method, and gene...

Synthetic example 1

[0072] Into a four-necked flask equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen gas introduction tube, 111.99 parts of PPA2000 (hydroxyl value 56.1 mgKOH / g) with a molecular weight of 2000 and 111.99 parts of PPG1000 (hydroxyl value 112.2 mgKOH / g) with a molecular weight of 1000 were added , 52.65 parts of toluene diisocyanate, 0.03 parts of tin (II) 2-ethylhexanoate, and 82.5 parts of ethyl acetate were reacted at 90° C. for 3 hours under a nitrogen stream to obtain 359.16 parts of a solution of a terminal isocyanate prepolymer. Next, 21.74 parts of isophoronediamine, 1.64 parts of monoethanolamine, 290 parts of isopropanol, and 327.47 parts of ethyl acetate were mixed, and 359.16 parts of the obtained solvent solution of the terminal isocyanate prepolymer was added to the mixed material. Parts were slowly added at room temperature, followed by reaction at 50° C. for 1 hour to obtain a polyurethane resin composition (PU01) with a solid content of 30....

Synthetic example 2～26

[0074] Urethane resin compositions (PU02 to PU26) were obtained by the same operation as in Synthesis Example 1 using the addition ratios in Tables 1 to 3.

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Abstract

The present invention provides a polyurethane resin composition, which comprises: a polyurethane resin and a mixed solvent containing an ester solvent and an alcohol; The urethane prepolymer with isocyanate group at the end is further reacted with organic diamine and alkanolamine to control [NCO(all)] / [OH] and [NCO(TDI)] / [OH], The polyurethane resin obtained by the hydroxyl value of the polyurethane resin and the ratio of organic diamine to alkanolamine.

Description

technical field [0001] The present invention relates to a polyurethane resin composition and a printing ink composition. Background technique [0002] Conventionally, examples of solvents used in printing inks include aromatic solvents such as toluene and xylene, which have relatively strong solubility, and ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone. However, in recent years, the printing ink industry has been required to consider environmental issues from the perspective of global-scale environmental preservation and regulations. Therefore, development of printing inks using ester / alcohol solvents that excludes these aromatic solvents and ketone solvents has been desired. Therefore, research and development of an ester / alcohol solvent-based printing ink is underway. However, ester / alcohol solvents have lower solvency than aromatic and ketone solvents, and thus are poor in printability. In addition, when the solvency of the ester / alcohol solven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/12C09D11/102C09D11/033C08G18/10C08G18/32C08L75/12C09D11/00
CPCC08G18/12C08G18/3228C08G18/3234C08G18/3271C08G18/3275C08G18/4018C08G18/4238C08G18/4825C08G18/6603C08G18/6618C08G18/6622C08G18/755C08G18/7614C08G18/7671C09D11/033C09D11/102C08G18/32C08G18/7621C08G18/2865C09D175/04C08G18/324C08G18/2815
Inventor 中川知子志鹰基小藤通久野村雄史幡野佑悟
Owner TOYO INK SC HOLD CO LTD
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