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US 5,665,853 AGranted
Dry strength resin compositions
AssigneeGEO Speciality Chemicals, Inc.
InventorJose M. Rodriguez
Life of this patent
Estimating the term…
Abstract
The tensile strength properties of paper are improved by adding to paper stock a resin composition comprising a water-soluble polymer containing a polyhydric alcohol such as sorbitol in the backbone of the polymeric molecule.
Claims3
A resin composition consisting of a water-soluble polymer molecule wherein the backbone of said polymer molecule consists of sorbitol copolymerized with a co-monomer selected from the group consisting of an alkylamine, citric acid, and formaldehyde.
Dependencies are inferred from the claim text.