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:
Dec. 08, 1987
Filed:
Feb. 13, 1985
Applicant:
Inventors:
Reinmar Peppmoller, Krefeld, DE;
Friedlieb Koschier, Sippersfeld, DE;
Assignee:
Chemische Fabrik Stockhausen GmbH, Krefeld, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
524 77 ; 524270 ; 524271 ; 524272 ;
Abstract
The present invention relates to mixtures of water-soluble synthetic anionic polymers consisting of at least 80%-wt. acrylamide and/or methacrylamide and sizing media based on partly or totally saponified natural resins as well as the use of such mixtures in the production of paper and cardboard in order to reduce the absorbency and improve the dry strength of these products.