LAMINATE PRINTING INK COMPOSITION FOR FLEXIBLE PACKAGING

WIPO Patent Application WO/2020/235526

A1

The invention addresses the problem of providing a printing ink composition for a laminate for flexible packaging having excellent long-term stability for which the printing ink composition for a laminate for flexible packaging can be designed so that environmentally detrimental chlorine is not used, a higher content of a plant-derived material can be used, and improvements in adhesiveness thereof on films including various types of film and various high-function barrier films can be achieved.　As a solution to the problem, provided is a flexible packaging laminate printing ink composition, which is a printing ink composition for a laminate, containing a pigment, a binder resin, and an organic solvent, wherein the binder resin contains a polyurethane resin (A) having a urethane group concentration of 0.3 to 2.4 mmol/g and containing, at each terminus, a urea bond having an amino group, and a polyurethane resin (B) having a urethane group concentration of 2.0 to 6.0 mmol/g and containing no urea bond, the mass ratio of the polyurethane resin (A) versus the polyurethane resin (B) being 95:5 to 50:50.

HARADA JUNICHI (JP)
OGAWA TORU (JP)
MAEOKA YOSHIAKI (JP)
UMEBAYASHI NAOFUMI (JP)

PCT/JP2020/019640

November 26, 2020

May 18, 2020

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SAKATA INX CORP (JP)

B32B27/00; B32B27/40; B65D65/40; C09D11/102; C09D11/106; C09J175/06

WO2018003596A1	2018-01-04
WO2018199085A1	2018-11-01
WO2015068412A1	2015-05-14

JP2017019991A	2017-01-26
JP2016130297A	2016-07-21
JP2018095831A	2018-06-21
JP2016183339A	2016-10-20
JP2016065129A	2016-04-28
JP2018076461A	2018-05-17

YAMADA, Yasuyuki et al. (JP)

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