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:
Jun. 14, 1977
Filed:
Jul. 12, 1976
Applicant:
Inventors:
Wadym Jarowenko, Plainfield, NJ (US);
Henry R Hernandez, Somerville, NJ (US);
Assignee:
National Starch and Chemical Corporation, Bridgewater, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162175 ; 536 48 ; 536 49 ; 536107 ; 536108 ;
Abstract
The use in the manufacture of paper of additives comprising derivatives of starches having particular levels of water fluidity and which contain controlled proportions of cationogenic or cationic substituent groups as well as sulfo-succinate groups. The resulting paper containing the latter additives is characterized by improved retention of pigments and increased strength.