Aqueous resin composition, image forming method, and printed material
AssigneeMitsubishi Chemical Corporation
InventorsAkiteru FUJII, Yuqing XU, Sachiko SAWADA, Yuuya HIRAMOTO
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Abstract
An aqueous resin composition including at least: a polyurethane resin that contains a carboxylate group; a crosslinking agent that contains at least two or more carbodiimide groups in one molecule; and a surfactant, wherein a molar ratio of the carbodiimide groups contained in the crosslinking agent to the carboxylate group contained in the polyurethane resin is 0.1 or greater and 5.0 or less, and the aqueous resin composition further contains an amine compound having a pkb of 3.5 or greater and 4.7 or less.
Claims15
An aqueous resin composition, comprising:
- a polyurethane resin that contains a carboxylate group;
- a crosslinking agent that contains at least two carbodiimide groups in one molecule;
- a surfactant;
- and
- an amine compound having a pkb of 3.5 to 4.7;
- wherein a molar ratio of carbodiimide groups contained in the crosslinking agent to carboxylate groups contained in the polyurethane resin is 0.1 to 5.0.
An aqueous resin composition, comprising:
- a polyurethane resin that contains a carboxylate group;
- a crosslinking agent that contains at least two carbodiimide groups in one molecule;
- and
- a surfactant;
- wherein:
- the polyurethane resin is a polyether polyurethane resin;
- and
- a molar ratio of carbodiimide groups contained in the crosslinking agent to carboxylate groups contained in the polyurethane resin is 0.1 to 2.9.
An aqueous resin composition, comprising:
- a polyurethane resin that contains a carboxylate group;
- a crosslinking agent that contains two or more carbodiimide groups in one molecule;
- and
- a surfactant;
- wherein:
- a carbodiimide group equivalent of the crosslinking agent is 400 mol−1 to 700 mol−1;
- and
- a molar ratio of carbodiimide groups contained in the crosslinking agent to carboxylate groups contained in the polyurethane resin is 0.4 or greater.
A digital printing type image forming method, comprising:
- coating a printing medium with an aqueous resin composition to form an adhesive layer;
- and
- forming an ink layer with an ink:
- wherein the aqueous resin composition comprises a polyurethane resin containing a carboxylate group, and a crosslinking agent containing at least two carbodiimide groups in one molecule.
A printed material comprising:
- an adhesive layer and an ink layer on a printing medium;
- wherein the adhesive layer has a crosslinked structure derived from a polyurethane resin containing a carboxylate group and a crosslinking agent containing a carbodiimide group.
Dependencies are inferred from the claim text.