Patent · US Expired

Underwater or under-hydrocarbon pelletizing of biologically-active-compound-containing melts

US6632389B1 · kind B1 · utility

8Cited by

7References

9Claims

0Family size

Assignee

BASF SE

Inventors

Andreas Ernst · Worms, DE
Thomas Kessler · Schifferstadt, DE
Gunther Berndl · Herxheim, DE

Key dates

Filing date	Aug 23, 2000
Grant date	Oct 14, 2003
Priority date	—
Expiry date	May 15, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29K2105/0005
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A process for producing pellets comprising biologically active substances in which the biologically active substances are homogeneously dispersed in a matrix based on at least one thermoplastic polymer, which polymer has in aqueous medium a pH-dependent solubility, by homogeneous mixing of the starting materials in the melt and subsequent extrusion and shaping, which comprises the shaping being performed in a cooling medium in which the pellets are not soluble or dispersible.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.