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:
Sep. 11, 2001
Filed:
Apr. 06, 1999
Applicant:
Inventors:
Donald Kendall Drummond, Quakertown, PA (US);
Patrick Clinton Wernett, Upper Black Eddy, PA (US);
Assignee:
Minerals Technologies Inc., Bethlehem, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 1/737 ; D21H 1/763 ; D21H 1/728 ;
U.S. Cl.
CPC ...
D21H 1/737 ; D21H 1/763 ; D21H 1/728 ;
Abstract
Novel polymers are provided having phosphonated and sulphonated substituent groups such that the polymers is multifunctional in its use. Optional amide substituents are used to reduce electrostatic charge density or for hydrogen bonding. An advantage of the polymer is the flexibility of using it for multiple purposes. A particular application is for bonding paper fillers and paper fiber together.