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:
Apr. 12, 1994
Filed:
Mar. 26, 1993
Applicant:
Inventors:
Matthias Krull, Bad Soden am Taunus, DE;
Christoph Naumann, Niedernhausen, DE;
Herrmann Hoffmann, Kelkheim, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526240 ; 526278 ; 526271 ; 526264 ; 526287 ;
Abstract
The invention relates to alkenylaminoalkane-1,1-diphosphonic acid derivatives of the formula I ##STR1## in which R.sup.1 to R.sup.5, a, b, and Z have the meaning given in the description and to processes for their preparation. The invention furthermore relates to copolymers comprising 0.1-50 mol %, preferably 1-15 mol %, of at least one alkenylaminoalkane-1,1-diphosphonate unit of the formula I and 99.9-50 mol %, preferably 99-85 mol %, of at least one carboxylic acid unit of the formula II