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US 12,392,089 B2Granted
Laminate and food packaging material
AssigneeMitsui Chemicals, Inc.
InventorShirou Honma
Life of this patent
Estimating the term…
Abstract
A laminate includes a paper substrate, an anchor coat layer disposed at a one-surface side of the paper substrate, and a barrier coat layer disposed at a one-surface side of the anchor coat layer. The paper substrate has a density of 0.72 g/cm3 or more. The barrier coat layer contains a gas barrier polyurethane resin.
Claims11
A laminate comprising:
- a paper substrate;
- an anchor coat layer disposed at a one-surface side of the paper substrate;
- and
- a barrier coat layer disposed at a one-surface side of the anchor coat layer, wherein the paper substrate has a density of 0.72 g/cm3 or more,
- the barrier coat layer contains a gas barrier polyurethane resin,
- in the barrier coat layer, the gas barrier polyurethane resin contains a secondary reaction product of:
- an isocyanate group-terminated prepolymer;
- and
- a chain extender, and
- the isocyanate group-terminated prepolymer is a primary reaction product of:
- a polyisocyanate component containing xylylene diisocyanate and/or 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.
10 more elements
Dependencies are inferred from the claim text.