Abstract: A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend.

Abstract: A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1795-96, a method of making the blend and materials which incorporate the blend.

Abstract: Carboxylated, mercerized cellulose fiber having at least 12 meq/100 g of carboxyl substitution at the C-6 position of the anhydroglucose units, which includes at least 20% cellulose II, may be produced by catalytically carboxylating mercerized cellulose fiber in at least two catalytic carboxylation stages in a continuous series in which the pH is adjusted, and a primary oxoammonium salt catalyst (or precursor thereof) and secondary oxidant is added, at the beginning of each stage. Optionally, the carboxylated, mercerized cellulose may be made substantially free of aldehyde groups by means of a stabilizing step following the final carboxylation stage, in which aldehyde groups present in the fibers are converted to carboxyl groups.

Abstract: A method of curing cementitious material comprising added a fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose having a degree of substitution of 0.01 to 0.45 to the material during mixing. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose may also include bleached or partially bleached wood pulp fiber. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose has a substituent content of from 10 to 150 meq/100 g cellulose fiber. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose is 0.1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autogenous shrinkage of the cementitious material is reduced.

Abstract: A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend.

Abstract: Carboxylated, mercerized cellulose fiber having at least 12 meq/100 g of carboxyl substitution at the C-6 position of the anhydroglucose units, which includes at least 20% cellulose II, may be produced by catalytically carboxylating mercerized cellulose fiber in at least two catalytic carboxylation stages in a continuous series in which the pH is adjusted, and a primary oxoammonium salt catalyst (or precursor thereof) and secondary oxidant is added, at the beginning of each stage. Optionally, the carboxylated, mercerized cellulose may be made substantially free of aldehyde groups by means of a stabilizing step following the final carboxylation stage, in which aldehyde groups present in the fibers are converted to carboxyl groups.

Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly(diallyldimethylammonium chloride). The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.

Abstract: A method for making particles containing carboxyalkyl cellulose, comprising blending a carboxyalkyl cellulose and a starch in water to provide an aqueous gel; treating the aqueous gel with a crosslinking agent to provide a crosslinked gel; drying the crosslinked gel to provide a solid; comminuting the solid to provide a plurality of particles.

Abstract: Manufacturing carboxylated fiber by catalytically carboxylating cellulose fiber in at least two catalytic carboxylation stages in series in which a primary catalyst and secondary oxidizing agent and, if necessary, pH adjustment agent is added at the beginning of each stage.

Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly(diallyldimethylammonium chloride). The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.

Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly(diallyldimethyl ammonium)chloride. The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.

Abstract: Manufacturing carboxylated fiber by catalytically carboxylating cellulose fiber in at least two catalytic carboxylation stages in series in which a primary catalyst and secondary oxidizing agent and, if necessary, pH adjustment agent is added at the beginning of each stage.

Abstract: A method of curing cementitious material comprising added a fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose having a degree of substitution of 0.01 to 0.45 to the material during mixing. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose may also include bleached or partially bleached wood pulp fiber. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose has a substituent content of from 10 to 150 meq/100 g cellulose fiber. The fibrillated carboxyalkyl cellulose, cellulose alkylsulfonic acid, phosphorylated cellulose or sulfated cellulose is 0.1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autogenous shrinkage of the cementitious material is reduced.

Abstract: A fiber-cement product which includes a treated cellulose wood pulp fiber. The fiber is treated with fibrillated carboxymethyl cellulose or a carboxyethyl cellulose and poly (diallyldimethyl ammonium)chloride. The fiber can be bleached or partially bleached, refined or unrefined or a mixture of refined and unrefined fiber.

Abstract: A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend.

Abstract: Particles comprising a combination of a carboxyalkyl cellulose and a starch, wherein the particles comprise a plurality of non-permanent metal crosslinks. The non-permanent intra-fiber metal crosslinks include multi-valent metal ion crosslinks formed with one or more metal ions selected from aluminum, boron, bismuth, titanium, and zirconium ions.

Abstract: Cellulose fibers having particles attached thereto, the particles comprising a carboxyalkyl cellulose, a starch, and a plurality of non-permanent metal crosslinks. The non-permanent intra-fiber metal crosslinks include multi-valent metal ion crosslinks formed with one or more metal ions selected from aluminum, boron, bismuth, titanium, and zirconium ions.

Abstract: A method for making mixed polymer composite fibers in which a carboxyalkyl cellulose and a starch are blended in water to provide an aqueous gel; the aqueous gel treated with a first crosslinking agent to provide a crosslinked gel; the crosslinked gel mixed with a water-miscible solvent to provide fibers; and the fibers treated with a second crosslinking agent to provide crosslinked mixed polymer composite fibers.

Abstract: A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend.

Abstract: A method for making fibers having particles attached thereto, comprising blending a carboxyalkyl cellulose and a starch in water to provide an aqueous gel; treating the aqueous gel with a first crosslinking agent to provide a crosslinked gel; drying the crosslinked gel to provide a solid; comminuting the solid to provide a plurality of particles; combining at least a portion of the plurality of particles with a aqueous dispersion comprising cellulose fibers and a first water-miscible solvent and, optionally, a second crosslinking agent, to provide a mixture comprising swollen particles and cellulose fibers; and adding a second water-miscible solvent to the mixture to provide fibers having particles attached thereto.