Zwitterionic terpolymers, method of making and use on medical devices
US7713541B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2007 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Nov 13, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/282
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Biocompatible terpolymers are manufactured to include a zwitterionic monomer, an alkoxy acrylate monomer, and a hydrophobic monomer. The alkoxy acrylate monomer can be a 2-methoxyethyl methacrylate (MOEMA) or a 2-methoxyethyl methacrylate (EOEMA). Alternatively, the alkoxy acrylate can be 2-methoxyethyl acrylate (MOEA) or 2-methoxyethyl acrylate (EOEA). The alkoxy acrylate monomers advantageously give the zwitterionic copolymers greater ductility, strength, and toughness while maintaining a desired amount of hydrophilicity. The improved toughness allows the zwitterionic copolymers to be processed without cross-linking, which improves the elongation properties of the zwitterionic copolymer, and reduces the risk of cracking during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.