Loading patent…
AssigneeAkzona Incorporated
InventorAlan W. Meierhoefer
Estimating the term…
An alloyed cellulosic fiber containing an alkali metal salt or ammonium salt of a copolymer or terpolymer of acrylic acid and/or methacrylic acid and an aliphatic ester of at least one of the acids is prepared by a process wherein the copolymer or terpolymer is mixed with a viscose solution and the mixture is extruded through a spinneret into a conventional spin bath and processed into staple fibers which are adapted to be used in absorbent articles and the like. The alloyed cellulosic fiber of the invention has increased fluid absorbency characteristics over the fibers of the same cellulose composition without the alloying material. An unsaturated aliphatic dicarboxylic acid such as maleic acid or anhydride may be incorporated in the copolymer or terpolymer. Also, a copolymer or terpolymer of acrylic acid or methacrylic acid and an aliphatic ester of acrylic acid or methacrylic acid may contain radicals obtained from acryloamidoalkane sulfonic acid or an unsaturated phosphorous acid.
A fluid absorbent cellulose fiber containing in an admixture with cellulose an alkali metal salt or ammonium salt of a polymer having repeating units derived from an aliphatic ester of acrylic acid or methacrylic acid and having repeating units derived from at least one member from the group consisting essentially of acrylic acid, methacrylic acid or an anhydride thereof and acrylamidoalkyl sulfonic acid.
An article of manufacture for absorbing fluids comprising regenerated cellulose fibers containing in physical mixture with said cellulose an alkali metal salt or ammonium salt of a polymer having repeating units derived from an aliphatic ester of acrylic acid or methacrylic acid and having repeating units derived from at least one member of the group consisting essentially of acrylic acid, methacrylic acid or an anhydride thereof and acrylamidoalkyl sulfonic acid.
A method of improving the fluid absorbency of a regenerated cellulose fiber which comprises physically admixing in the fiber an alkali metal salt or ammonium salt of
A method of improving the fluid absorbency of a regenerated cellulose fiber which comprises physically admixing in the fiber an alkali metal salt or ammonium salt of a polymer of acrylic acid or methyacrylic acid or anhydride thereof and an aliphatic ester of acrylic acid or methacrylic acid.
A method of making a fluid absorbent fiber comprising mixing an alkali metal salt or ammonium salt of
Dependencies are inferred from the claim text.