Yellowing resistant PSA
US12037523B2 · kind B2 · utility
0Cited by
23References
21Claims
0Family size
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Inventors
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Mar 25, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2433/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided herein is a pressure sensitive adhesive (PSA) comprising a polycrylate base polymer, a crosslinker and a fluorescer. The crosslinker does not comprise a metal acetylacetonate, a metal alkoxide, or an alkoxy-metal acetylacetonate, and the fluorescer comprises less than 0.1 wt. % metal oxide based on the solid weight of the adhesive. The adhesive is resistant to yellowing under adverse conditions such as high temperature treatment and/or exposure to UV.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.