Acid-functionalized copolymers of methyl methacrylate and acrylic resin compositions based thereon
US12312429B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Aug 26, 2022 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Nov 22, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Acid-functionalized copolymers of methyl methacrylate having relatively high glass transition temperatures and molecular weights may be employed to manufacture articles having high light transmission values, low haze, high heat resistance, and high environmental stability, which are useful as optical protection films, zero-zero optical retardation films, and compensation films as well as lighting pipes and optical imaging lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.