Cellulosic composition

US7628888B2 · kind B2 · utility

Assignee

• University of Pittsburgh—Of the Commonwealth System of Higher Education · US

Inventors

• Eric J. Beckman · Wilkinsburg, US
• W. Eamon Carroll · Orefield, US
• Toby Chapman · Pittsburgh, US
• Kristen Elaine Minnich · Allentown, US
• Dennis Sagl · Fogelsville, US
• Richard Joseph Goddard · Fogelsville, US

Key dates

• Filing date: Jun 12, 2006
• Grant date: Dec 8, 2009
• Expiry date: Aug 9, 2026

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H17/56
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A composition includes at least one hydrophilic polymer containing primary (—NH2) 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.