Procedure for obtaining modified acrylic sheets of high impact resistance
US6734230B1 · kind B1 · utility
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38Claims
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Key dates
| Filing date | Jul 8, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Jul 8, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A procedure for the production of a modified acrylic sheet with high impact resistance, of the type in which a prepolymerization is done of a mix of monomers with a polymer of dissolved dienic monomers. The procedure is done in batches at low temperatures without there being a separation of the polymer of dienic monomers from the rest of the mix. The procedure facilitates obtaining a modified acrylic sheet with high impact resistance whose transmittance is kept after being subjected to an accelerated degradation, and whose impact properties are not reduced more than 50% after said accelerated degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.