The present disclosure provides compositions and methods of manufacture of a composite material. In an aspect, the composite material may comprise a cellulosic material and a binder material. In some cases, at least a portion of the cellulosic material may be delignified. In some cases, at least a portion of crystal structure of the cellulosic material may be maintained in the composite material. In some cases, the cellulosic material may comprise a plurality of pores. In some cases, the binder may comprise lime comprising calcium oxide or calcium hydroxide. In some cases, the binder may further comprise silicate.

The present disclosure provides compositions and methods of manufacture of a composite material. In an aspect, the composite material may comprise a cellulosic material and a binder material. In some cases, at least a portion of the cellulosic material may be delignified. In some cases, at least a portion of crystal structure of the cellulosic material may be maintained in the composite material. In some cases, the cellulosic material may comprise a plurality of pores. In some cases, the binder may comprise lime comprising calcium oxide or calcium hydroxide. In some cases, the binder may further comprise silicate.

The present invention fills a long-felt need for an improved phenol-furan resin composition used as a chimney liner with reduced combustibility, and for the preparation of pre-impregnated fiber-reinforced composite material and its use. The invention shows a higher tolerance for certain conditions that are damaging to other resin compositions including higher heat tolerance and higher tolerance for flue gases and other compounds.

The present invention fills a long-felt need for an improved phenol-furan resin composition used as a chimney liner with reduced combustibility, and for the preparation of pre-impregnated fiber-reinforced composite material and its use. The invention shows a higher tolerance for certain conditions that are damaging to other resin compositions including higher heat tolerance and higher tolerance for flue gases and other compounds.

Cellulose II nanocrystal particles have a crystallinity ≥80%, a number-average molecular weight ranging from 1200 to 2500, and a molecular weight distribution coefficient Mw/Mn≤1.30. The cellulose II nanocrystal particles can be prepared by: subjecting a cellulose raw material to an amorphization reconstitution and then to a crystallization acidolysis. The crystallization acidolysis may be carried out under a low concentration acidic condition. The method enables high efficient and clean production and quality control of cellulose nanocrystal materials.

Cellulose II nanocrystal particles have a crystallinity ≥80%, a number-average molecular weight ranging from 1200 to 2500, and a molecular weight distribution coefficient Mw/Mn≤1.30. The cellulose II nanocrystal particles can be prepared by: subjecting a cellulose raw material to an amorphization reconstitution and then to a crystallization acidolysis. The crystallization acidolysis may be carried out under a low concentration acidic condition. The method enables high efficient and clean production and quality control of cellulose nanocrystal materials.

Processes for making absorbent towel paper and soft sanitary tissue paper webs are provided. The processes provide the steps of: (a) providing a papermaking furnish, (b) forming a wet fibrous web having a differential density from the paper making furnish; and, (c) drying the differential density wet fibrous web to not more than about 10% by weight moisture. Step a) provides: i) from about 20.1% to about 99.9% by weight of a softwood pulp fiber mixture; and, ii) from greater than 0% to about 79.9% by weight of a hardwood pulp fiber mixture. Step i) provides u) from about 20.0% to about 99.8% by weight of softwood pulp fiber; and, v) from about 0.05% to about 5.0% by weight of strengthening additive. Step ii) provides w) from about 0.05% to about 79.4% by weight of hardwood pulp fibers; and, x) from about 0.05% to about 20.0% by weight of cellulose nano-filaments.

Processes for making absorbent towel paper and soft sanitary tissue paper webs are provided. The processes provide the steps of: (a) providing a papermaking furnish, (b) forming a wet fibrous web having a differential density from the paper making furnish; and, (c) drying the differential density wet fibrous web to not more than about 10% by weight moisture. Step a) provides: i) from about 20.1% to about 99.9% by weight of a softwood pulp fiber mixture; and, ii) from greater than 0% to about 79.9% by weight of a hardwood pulp fiber mixture. Step i) provides u) from about 20.0% to about 99.8% by weight of softwood pulp fiber; and, v) from about 0.05% to about 5.0% by weight of strengthening additive. Step ii) provides w) from about 0.05% to about 79.4% by weight of hardwood pulp fibers; and, x) from about 0.05% to about 20.0% by weight of cellulose nano-filaments.

Provided are low dust-content particulate polyvinyl alcohol-based compositions suitable for a variety of end uses including for use in subterranean treatments and for manufacturing chemical materials, which are prepared by compacting a specified polyvinyl alcohol polymer resins, optionally with specified additives and/or other polyvinyl alcohols.

The present invention fills a long-felt need for an improved phenol-furan resin composition with reduced combustibility, and for the preparation of pre-impregnated fiber-reinforced composite material and its use. The invention shows a higher tolerance for certain conditions that are damaging to other resin compositions including higher heat tolerance and higher tolerance for flue gases and other compounds.