Method for preparing microparticles having a selected polymer molecular weight
US6534092B2 · kind B2 · utility
28Cited by
34References
44Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 14, 2002 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Feb 14, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for preparing microparticles having a selected polymer molecular weight. The hold time and temperature of a solution containing a nucleophilic compound and a polymer having a starting molecular weight are controlled in order to control the molecular weight of the polymer in the finished microparticle product. In this manner a selected polymer molecular weight in the finished microparticle product can be achieved from a variety of starting material molecular weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.