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:
Aug. 29, 1995
Filed:
Jun. 14, 1994
Klaus Szablikowski, Walsrode, DE;
Wolfgang Koch, Bomlitz, DE;
Heinrich Leffers, Walsrode, DE;
Hans-Gunter Poersch-Panke, Walsrode, DE;
Branislav Boehmer, Walsrode, DE;
Wolff Walsrode Aktiengesellschaft, Walsrode, DE;
Abstract
A method for the preparation of water-soluble, cationic amine polymers by the continuous or batch-wise reaction of a polymer having primary, secondary or tertiary amine functions in its side chain or primary chain as a starting material, wherein the reaction is carried out with an epoxide, a glycidyl ether or a mixture of different epoxides and glycidyl ethers in aqueous solution without additional solvent at a temperature of 30.degree. to 90.degree. C. and at a pH of 8 to 14 within 3 to 30 minutes, the epoxides or glycidyl ethers are added as one batch or in portions, and after adjusting the pH of the aqueous solution of the cationic polymer, which is >13.5 after the reaction with epoxide or glycidyl ether, using a mineral or carboxylic acid, the product solution is obtained without additional work-up steps.