FLUID ABSORBENT CELLULOSE FIBERS CONTAINING ALKALINE SALTS OF POLYMERS OF ACRYLIC ACID, METHACRYLIC ACID OR AN ACRYLOAMIDOALKANE SULFONIC ACID WITH ALIPHATIC ESTERS OF ACRYLIC ACID OR METHACRYLIC ACID

摘要

Abstract of the DisclosureAn alloyed cellulosic fiber containing an alkalimetal salt or ammonium salt of a copolymer or terpolymer ofacrylic acid and/or methacrylic acid and an aliphatic ester ofat least one of the acids is prepared by a process wherein thecopolymer or terpolymer is mixed with a viscose solution andthe mixture is extruded through a spinneret into a conventionalspin bath and processed into staple fibers which are adapted tobe used in absorbent articles and the like. The alloyedcellulosic fiber of the invention has increased fluid absor-bency characteristics over the fibers of the same cellulosecomposition without the alloying material. An unsaturatedaliphatic dicarboxylic acid such as maleic acid or anhydridemay be incorporated in the copolymer or terpolymer. Also, acopolymer ox terpolymer of acrylic acid or methacrylic acid andan aliphatic ester of acrylic acid or methacrylic acid contain-ing radicals obtained from acryloamidoalkane sulfonic acid or anunsaturated phosphorous acid or a polymer prepared by reactingan acryloamidoalkane sulfonic acid may be used.