Buffer polymers, co-immobile buffer and enzyme polymers and methods of synthesis thereof
US6762213B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2002 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Aug 8, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/6446
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane polymer includes at least one buffer selected to adjust pH to a pH within a desired range. The buffer compound is immobilized within the polymer, and the polymer has a buffer capacity in excess of 3 micromoles of acid or base per gram polymer. A polymer includes at least one enzyme that is selected to catalyze a reaction of a substance. The enzyme is immobilized within the polymer. The polymer also includes at least one buffer selected to adjust the pH in the vicinity of the enzyme to a pH within a desired range. The buffer compound is also immobilized within the polymer. The polymer preferably has enzyme activity and a buffer capacity in excess of 3 micromoles acid or base per gram polymer. In one embodiment, each of the enzyme(s) and the buffer(s) are covalently bonded to the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.