Pressure-sensitive adhesive compositions, pressure-sensitive adhesive layers, and pressure-sensitive adhesive sheets
US8883922B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Dec 19, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2301/408
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are a pressure-sensitive adhesive composition that is produced with no tin compound, has a sufficiently long pot life, and can be rapidly crosslinked in the process of forming a pressure-sensitive adhesive layer; and a pressure-sensitive adhesive layer and a pressure-sensitive adhesive sheet each produced using such a pressure-sensitive adhesive composition. A pressure-sensitive adhesive composition, comprising: 100 parts by weight of an acrylic polymer (A) having an active hydrogen-containing functional group; 0.1 parts by weight to 10 parts by weight of an isocyanate crosslinking agent (B); 0.002 parts by weight to 0.5 parts by weight of a catalyst (C) having an iron active center; and a compound (D) capable of undergoing keto-enol tautomerism, wherein the weight ratio (D/C) of the compound (D) capable of undergoing keto-enol tautomerism to the catalyst (C) having an iron active center is from 3 to 70.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.