Pressure-sensitive adhesive tape or sheet

Details Pressure-sensitive adhesive tape or sheet Pressure-sensitive adhesive tape or sheet

2003-11-06

2011-10-18

Chevalier, Alicia (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

C428S343000, C428S354000, C428S3550RA, C428S304400, C428S317100, C428S317300, C524S556000

Reexamination Certificate

active

08039103

ABSTRACT:
A pressure-sensitive adhesive tape or sheet is characterized by having a substrate having a pressure-sensitive adhesive layer on at least one side thereof, wherein the whole of the pressure-sensitive adhesive layer is formed of an aqueous dispersion type pressure-sensitive adhesive composition containing, as a base polymer, (A) an acrylic polymer containing a (meth)acrylic acid C4-12alkyl ester as the major monomer component; and in a surface portion of the pressure-sensitive adhesive layer within the range of up to 3 nm inward from the outer face of the pressure-sensitive adhesive layer, (B) an anionic emulsifier containing a sulfur atom is contained in a specific proportion, and (C) a hydrophilic polymer is contained in a specific proportion.

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Istvan Benedek and Luc J. Heymans, “Pressure-Sensitive Adhesive Technology”, Marcel Dekker Inc., Chapter 8, p. 412, 1997.

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