Method for reducing residual acrylic acid in acrylic acid polymer gels
AssigneeNalco Chemical Company
InventorsKristy M. Bailey, Patrick J. Marek
Life of this patent
Estimating the term…
Abstract
A method for reducing the residual acrylic acid present in water-insoluble polyacrylic acid water absorbent gel polymers which comprises treating these polymers with at least 0.5 mole of either amino acid cysteine or lysine per mole of acrylic acid present in said waters for at least 15 minutes at a temperature of at least 80.degree. C.
Claims3
A method for reducing the residual acrylic acid present in water-insoluble polyacrylic acid water absorbent gel polymers which comprises treating these polymers with at least 0.5 mole of either amino acid cysteine or lysine per mole of residual acrylic acid present in said polymers for at least 15 minutes at a temperature of at least 80.degree. C.
Dependencies are inferred from the claim text.