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. 31, 1987
Filed:
Sep. 04, 1985
Applicant:
Inventors:
Assignee:
Dic-Hercules Chemicals, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524107 ; 524365 ; 524555 ; 524556 ;
Abstract
A ketene dimer aqueous dispersion for paper sizing comprising a ketene dimer compound, an acrylamide type polymer having cationic groups and optionally an anionic dispersant and an aqueous medium is disclosed. This dispersion has a ketene dimer content as high as about 25 -30% and good storage stability.