Heterotelechelic block copolymers and process for producing the same
US5925720A · kind A · utility
210Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/922
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention provides a heterotelechelic oligomer or polymer which is represented by formula below: ##STR1## wherein R.sup.1 and R.sup.2 form an acetal, or, combined with each other, denote oxy (.dbd.O), PA1 p, m, n and q each denote a certain integer, PA1 L is a group which forms an ester, and PA1 Z denotes a certain functional group. This invention a so provides a process to produce the above oligomer or polymer by means of living polymeri-zation. Since this oligomer or polymer forms a high- molecular micelle which is stable in an aqueous solvent, said oligomer or polymer will be useful as a carrier for drug delivery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.