Hot-melt pressure-sensitive adhesive composition based on polyurethane/(meth)acrylic
US11873429B2 · kind B2 · utility
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3References
18Claims
0Family size
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Key dates
| Filing date | Jun 19, 2020 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Feb 7, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2475/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A hot-melt pressure-sensitive adhesive composition comprises: The polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4. The said polyurethane (a) has a mean functionality of functional groups of formula (I) strictly of greater than 1.9.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.