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:
Feb. 27, 1996
Filed:
May. 12, 1995
Applicant:
Inventors:
Louis R Dragner, Rock Hill, SC (US);
Bernard F North, Rock Hill, SC (US);
Assignee:
Sequa Chemicals, Inc., Chester, SC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H / ; D21H / ; D21H / ;
U.S. Cl.
CPC ...
1621646 ; 162166 ; 162179 ; 162167 ;
Abstract
A method of enhancing the opacity of paper and paper of enhanced opaqueness is provided wherein a reaction product of fatty acid, diamine and a glyoxal product an further including a surfactant, is added to a slurry of cellulose fibers in a papermaking process.