Transparent and antistatic PMMA composition
US12071538B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Aug 27, 2018 |
| Grant date | Aug 27, 2024 |
| Priority date | — |
| Expiry date | Aug 27, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A transparent antistatic composition based on polymethyl methacrylate (PMMA), including: 55% to 99.9% by weight of PMMA, and 0.1% to 45% by weight of at least one polyamide (PA) block-containing and polyether (PE) block-containing copolymer (PEBA) including polyethylene glycol (PEG), with respect to the total composition weight, said copolymer being characterized in that it includes in the range 50% to 80% by weight of PEG with respect to the total weight of copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.