The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 1985
Filed:
Nov. 23, 1983
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; B32B / ;
U.S. Cl.
CPC ...
428402 ; 526201 ; 526314 ;
Abstract
The invention relates to bead polymers based on vinylene carbonate which are distinguished, in particular, by high porosity and which are well suited as carrier materials for biologically active substances. The preparation of these bead polymers is carried out, according to the invention, in the presence of certain dispersion stabilizers.