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:
Aug. 15, 2006
Filed:
Sep. 23, 2002
Eric J. Beckman, Aspinwall, PA (US);
W. Eamon Carroll, Orefield, PA (US);
Toby Chapman, Pittsburgh, PA (US);
Kristen E. Minnich, Allentown, PA (US);
Dennis Sagl, Fogelsville, PA (US);
Richard J. Goddard, Fogelsville, PA (US);
Eric J. Beckman, Aspinwall, PA (US);
W. Eamon Carroll, Orefield, PA (US);
Toby Chapman, Pittsburgh, PA (US);
Kristen E. Minnich, Allentown, PA (US);
Dennis Sagl, Fogelsville, PA (US);
Richard J. Goddard, Fogelsville, PA (US);
University of Pittsburgh, Pittsburgh, PA (US);
Abstract
A composition includes at least one hydrophilic polymer containing primary (—NH) and/or secondary (—NHR) amine groups and at least one saccharide containing a reducible function. A method of increasing the strength of paper includes the step of contacting the paper with a composition comprising (i) at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function. A hydrogel composition is formed from a mixture of at least one hydrophilic polymer containing at least two groups which are independently the same or different a primary amine group or a secondary amine group and at least one saccharide containing a reducible function.