Functionalized polymers of &agr;-amino acids and the method of preparation thereof
US6590061B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Functionalized homopolymers and copolymers of &agr;-amino acids of the general formula 1, wherein X is oxygen or sulphur; R1 could be alkyl, alkenyl, substituted alkyl, aryl or substituted aryl; structure [A]n represents a poly(amino acid) chain based on &agr;-amino acids or their derivatives with protected functional groups, wherein n could be in the range of 1-500; Y is either OH, or a structure of the formula 2, wherein R2 is H or an amino-acid residue, or a structure of the formula 3, wherein Z and Z′ are either NH or O; R3 is a chemical structure selected from alkyls, substituted alkyls, aryls, substituted aryls, or a polymer selected from a group comprising poly(ethylene oxide), poly(propylene oxide) and polybutadiene; P is hydrogen or an acyl group derived from a carboxylic acid selected from the group including alkanoic acids, succinic acid, maleic acid, acrylic acid, phthalic acids and cyclohexane dicarboxylic acids, or it is an acyl selected from a group consisting of compounds according to a general formula 4, wherein R4 is selected from the group including C1 to C5 alkyls, CH2—O—CH2—CH2, CH2—O—CH2—CH2—CH2, and O—(CH2…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.