Title:
LAMINATE PRINTING INK COMPOSITION FOR SOFT PACKAGING
Document Type and Number:
WIPO Patent Application WO/2018/066699
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a laminate printing ink composition for soft packaging having superior suitability for printing, blocking resistance, impression drum staining, laminate suitability, and other characteristics relative to the conventional laminate printing ink composition for soft packaging. To solve this problem, the present invention provides a laminate printing ink composition for soft packaging, the composition having a pigment, a binder resin, and an organic solvent as main components thereof, wherein the binder resin is a polyurethane resin obtained by reacting a polymeric polyol and a polyisocyanate including dicyclohexylmethane-4,4'-diisocyanate, the polyurethane resin satisfying conditions (1) through (3). Condition (1): The mass ratio of dicyclohexylmethane-4,4'-diisocyanate and polyisocyanates other than dicyclohexylmethane-4,4'-diisocyanate (dicyclohexylmethane-4,4'-diisocyanate/polyisocyanates other than dicyclohexylmethane-4,4'-diisocyanate) is equal to 100/0 to 5/95. Condition (2): The usage ratio of the polyisocyanate and the polymeric polyol in terms of the equivalent ratio of isocyanate groups:hydroxyl groups (isocyanate index) is in the range of 1.2 to 2.3. Condition (3): The polyurethane resin has an amine value.
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Inventors:
OGAWA TORU (JP)
HARADA JUNICHI (JP)
AKASAKA KENTA (JP)
KOBAYASHI KYOHEI (JP)
HARADA JUNICHI (JP)
AKASAKA KENTA (JP)
KOBAYASHI KYOHEI (JP)
Application Number:
PCT/JP2017/036511
Publication Date:
April 12, 2018
Filing Date:
October 06, 2017
Export Citation:
Assignee:
SAKATA INX CORP (JP)
International Classes:
C09D11/102
Foreign References:
| JPH0463877A | 1992-02-28 | |||
| JPH11323234A | 1999-11-26 | |||
| JP2013116936A | 2013-06-13 | |||
| JP2015108057A | 2015-06-11 |
Attorney, Agent or Firm:
YAMADA Yasuyuki et al. (JP)
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