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AssigneeUniversity of Pittsburgh—Of the Commonwealth System of Higher Education
InventorsEric Beckman, W. Carroll, Toby Chapman, Kristen Minnich, Dennis Sagl, Richard Goddard
Estimating the term…
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.
A composition comprising water, paper product pulp, 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 sugar containing a reducible function.
13-40. (canceled)
A composition comprising paper product pulp and a component formed from 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 sugar containing a reducible function wherein the at least one hydrophilic polymer and the sugar are at least partially reacted before being contacted with the paper product pulp.
The composition of claim 49 wherein the copolymer is at least 0.5% by weight of vinyl amine.
Dependencies are inferred from the claim text.