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:
Mar. 19, 1991
Filed:
Jan. 19, 1990
Jurgen Fock, Duesseldorf, DE;
Dietmar Schedlitzki, Essen, DE;
Th. Goldschmidt AG, Essen, DE;
Abstract
Polyoxylalkylene ether with an average molecular weight of 400 to 10,000 with at least one terminal hydroxyl group and at least one lateral --SO.sub.3 X group (X=hydrogen, alkali metal or ammonium ion) is disclosed. The polyoxyalkylene ether is obtainable by the statistical or blockwise addition reaction of (a) .alpha.-alkylene oxides with 2 to 14 carbon atoms or mixtures thereof and (b) allyl and/or methallyl glycidyl ethers to monohydric to quadrihydric aliphatic alcohols with up to 8 carbon atoms, the ratio of component (a) to component (b) being selected so that at least one allyl ether group is linked to the average molecule, reacting the polymer by a known reaction with, based on the allyl ether groups, at least equimolar amounts of a compound of the formula HSO.sub.3 Y (Y=alkali or ammonium ion) and if necessary, exchanging the cation Y against a hydrogen ion also by a known procedure. The compounds are suitable as polyol components for the preparation of stable, ionic, aqueous polyurethane dispersions with a high solids content.