Patent ID: 11945200
Assignee: NITTO BELGIUM NV
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A pressure-sensitive adhesive sheet comprising a waterproof layer and a pressure-sensitive adhesive layer on at least a surface of the waterproof layer,
wherein the pressure-sensitive adhesive layer comprises, as adhesion-tightening agent, a phosphate,
the phosphate is a compound represented by the formula (2) or a salt thereof,, wherein R1 is —OH or —(OCH2CH2)nOR3, R2 represents —(OCH2CH2)mOR4, n and m are independently an integer between 1 and 30, and R3 and R4 are independently selected from linear or branched alkyl groups, aryl groups or alkylaryl groups, and
the pressure-sensitive adhesive layer has a surface hardness of 0.5 MPa or less.