Coating agent and laminate
AssigneeMitsui Chemicals, Inc.
InventorsKazuyuki FUKUDA, Tomoharu MIYANAGA, Chikako KOUDA, Takashi UCHIDA, Masaya KUSUMOTO
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Abstract
In a coating agent obtained by water-dispersing a polyurethane resin, the polyurethane resin is a secondary reaction product of an isocyanate group-terminated prepolymer and a chain extender. The isocyanate group-terminated prepolymer is a primary reaction product of a polyisocyanate component containing a xylylene diisocyanate and/or a hydrogenated xylylene diisocyanate, and an active hydrogen group-containing component containing a short chain diol having 2 to 6 carbon atoms and an active hydrogen compound having a hydrophilic group; and the viscosity at 25° C. of the coating agent is 50 mPa·s or more.
Claims9
A coating agent obtained by water-dispersing a polyurethane resin and a thickener, wherein
- the polyurethane resin is a secondary reaction product of an isocyanate group-terminated prepolymer and a chain extender, the isocyanate group-terminated prepolymer being a primary reaction product of a polyisocyanate component containing a xylylene diisocyanate and/or a hydrogenated xylylene diisocyanate, and an active hydrogen group-containing component containing a short chain diol having 2 to 6 carbon atoms and an active hydrogen compound having a hydrophilic group;
- and
- a content ratio of the thickener is 0.1% by mass or more and 20% by mass or less with respect to the total solid content of the polyurethane resin and the thickener.
A coating agent obtained by water-dispersing a polyurethane resin, wherein
- the polyurethane resin is a secondary reaction product of an isocyanate group-terminated prepolymer and a chain extender, the isocyanate group-terminated prepolymer being a primary reaction product of a polyisocyanate component containing a xylylene diisocyanate and/or a hydrogenated xylylene diisocyanate, and an active hydrogen group-containing component containing a short chain diol having 2 to 6 carbon atoms and an active hydrogen compound having a hydrophilic group;
- and
- the viscosity at 25° C. of the coating agent is 50 mPa·s or more.
A laminate comprising:
- a substrate made of paper and a polyurethane layer laminated on at least one surface of the substrate, wherein
- the polyurethane layer includes a dried product of the coating agent according to claim
Dependencies are inferred from the claim text.