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US 12,577,437 B2Granted
Pressure-sensitive adhesive sheet
AssigneeNitto Denko Corporation
InventorsAmane Sawamura, Shuhei Yamamoto
Life of this patent
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Abstract
A pressure-sensitive adhesive sheet 1 includes a plastic substrate 2, an adhesion-facilitating layer 3, and a pressure-sensitive adhesive layer 4 in the order in which they appear toward one side in a thickness direction. The adhesion-facilitating layer 3 includes an adhesive composition containing a polyester component and an oxazoline component. The pressure-sensitive adhesive layer 4 contains a water-dispersible polymer.
Claims6
A pressure-sensitive adhesive sheet comprising:
- a plastic substrate;
- an adhesion-facilitating layer;
- and
- a pressure-sensitive adhesive layer sequentially toward one side in a thickness direction, wherein
- the adhesion-facilitating layer contains an adhesive composition containing an oxazoline group-containing polyester polymer containing a polyester component and an oxazoline component,
- the pressure-sensitive adhesive layer contains a water-dispersible polymer,
- the water-dispersible polymer includes a water-dispersible acrylic polymer,
- the water-dispersible acrylic polymer is a polymer of a monomer component,
- the monomer component contains a carboxy group-containing vinyl monomer, and
- a ratio of the carboxy group-containing vinyl monomer to the monomer component is 0.1% by mass or more and 10% by mass or less.
7 more elements
Dependencies are inferred from the claim text.