Binder for solvent-based printing ink, and solvent-based printing ink including same

A printing ink and adhesive technology, which is applied in the field of solvent-based printing ink adhesives and solvent-based printing inks, can solve the problem of insufficient ink resolubility, poor ink stability, and poor boiling resistance. problems, to achieve the effects of excellent ink stability, excellent boiling resistance, and less blockage

Pending Publication Date: 2018-04-20
SANYO CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A polyurethane resin containing polypropylene glycol that does not use toluene but only solvents such as MEK and ethyl acetate has been proposed (for example, see Patent Document 2), but the resolubility of the ink is insufficient, plate blocking occurs during printing, and the use of Problems such as poor ink stability or poor boiling resistance caused by alcohol mixed with a large amount of water

Method used

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  • Binder for solvent-based printing ink, and solvent-based printing ink including same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0115] After adding 57.9 parts of 1,2-propanediol and 1.0 parts of potassium hydroxide into a reaction vessel with a stirring device and a temperature control device, continuously add 2380.3 parts of EO while controlling the reaction temperature at 100°C to 110°C under stirring and PO 540.8 parts. 60.0 parts of water and 60.0 parts of alkali adsorbent "Kyoward 600" (manufactured by Kyowa Chemical Industry Co., Ltd.) were added to the obtained crude polyether polyol containing a catalyst, purified by adsorption treatment, filtration, and drying, and further added 3- (3,5-di-tert-butyl-4-hydroxyphenyl) 6-methylheptyl propionate ("IRGANOX1135" manufactured by BASF Japan Co., Ltd.) 0.9 parts, stirred and dissolved to obtain polyether diol (A-1) 3000 copies. Polyether diol (A-1) is an EO / PO random addition product of 1,2-propanediol, and the weight ratio of EO / PO is 80 / 20 and Mn=4000.

manufacture example 2

[0117] After adding 50.6 parts of 1,2-propanediol and 1.0 parts of potassium hydroxide into a reaction vessel with a stirring device and a temperature control device, continuously add 1651.2 parts of EO while controlling the reaction temperature at 100°C to 110°C under stirring and PO 1297.2 parts. 60.0 parts of water and 60.0 parts of alkali adsorbent "Kyoward 600" (manufactured by Kyowa Chemical Industry Co., Ltd.) were added to the obtained crude polyether polyol containing a catalyst, purified by adsorption treatment, filtration, and drying, and further added 3- (3,5-di-tert-butyl-4-hydroxyphenyl) 6-methylheptyl propionate ("IRGANOX1135" manufactured by BASF Japan Co., Ltd.) 0.9 part, stirred and dissolved to obtain polyether diol (A-2) 3000 copies. Polyether diol (A-2) is an EO / PO random addition product of 1,2-propanediol, and the weight ratio of EO / PO is 55 / 45 and Mn=4900.

manufacture example 3

[0119] After adding 87.8 parts of 1,2-propanediol and 1.0 parts of potassium hydroxide into a reaction vessel equipped with a stirring device and a temperature control device, continuously add 898.7 parts of EO while controlling the reaction temperature at 100°C to 110°C under stirring and PO 2012.5 copies. 60.0 parts of water and 60.0 parts of alkali adsorbent "Kyoward 600" (manufactured by Kyowa Chemical Industry Co., Ltd.) were added to the obtained crude polyether polyol containing a catalyst, purified by adsorption treatment, filtration, and drying, and further added 3- (3,5-di-tert-butyl-4-hydroxyphenyl) 6-methylheptyl propionate ("IRGANOX1135" manufactured by BASF Japan Co., Ltd.) 0.9 part, stirred and dissolved to obtain polyether diol (A-3) 3000 copies. Polyether diol (A-3) is an EO / PO random addition product of 1,2-propanediol, and the weight ratio of EO / PO is 30 / 70 and Mn=2000.

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Abstract

Provided is a binder for solvent-based printing inks which are extensively usable on various plastic films, can be highly easily redissolved in solvents, and rarely cause printing plate clogging during printing, which have excellent ink stability even in case where water has come thereinto, and which have excellent boiling resistance. The binder for solvent-based printing inks according to the present invention comprises a polyurethane-urea resin (U), wherein the polyurethane-urea resin (U) is a resin obtained from, as essential constituent monomers, a polyether diol (A) that is an adduct obtained by causing alkylene oxides comprising ethylene oxide and 1,2-propylene oxide to add to a compound (F) having two active hydrogen atoms, a diamine (B), and a diisocyanate (C), the polyurethane-urea resin (U) having a content of oxyethylene groups of 2-24 wt%.

Description

technical field [0001] The present invention relates to a binder for solvent-based printing inks and a solvent-based printing ink. Background technique [0002] Conventionally, printing inks using polyurethane resin as a binder have excellent adhesion to polyester films and nylon films alone, but they do not have sufficient adhesion to polyolefin films such as polyethylene films and polypropylene films, which are general-purpose films. In addition, printing inks using chlorinated polyolefins as adhesives show good adhesion to polyolefin films, but do not have sufficient adhesion to polyester films and nylon films, so there are substrate films that are damaged The question of limitations. It has been proposed to use a polyurethane resin and a chlorinated polyolefin in combination for the purpose of widely using it in various plastic films (for example, see Patent Document 1). [0003] However, in recent years, environmental considerations have been emphasized, and it is str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/102C08G18/48C08G18/66
CPCC08G18/48C08G18/66C09D11/102
Inventor 藤冈正考
Owner SANYO CHEM IND LTD
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