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. 14, 1998
Filed:
Aug. 08, 1995
Applicant:
Inventors:
Jurgen Reiners, Leverkusen, DE;
Hans-Josef Laas, Cologne, DE;
Joachim Konig, Odenthal, DE;
Helmut Reiff, Leverkusen, DE;
Joachim Probst, Leverkusen, DE;
Bruno Bomer, Bergisch Gladbach, DE;
Reinhard Halpaap, Odenthal-Gloebusch, DE;
Fritz Puchner, Cologne, DE;
Harro Traubel, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 44 ; 528 52 ; 528 53 ; 528 66 ; 528 71 ; 1621641 ; 1621643 ; 1621646 ; 162135 ;
Abstract
The invention relates to a new process for the preparation of cellulose-containing material provided with a dry-strength and wet-strength finish and/or sized, characterised in that the cellulose-containing material is treated with a water-dispersible polyisocyanate mixture (I), which contains tertiary amino and/or ammonium groups, optionally polyether units and optionally hydrophobic groups.