Abstract: Compositions are disclosed herein comprising one or more crosslinked dextrans or crosslinked dextran-poly alpha-1,3-glucan graft copolymers. Further disclosed are processes for preparing such crosslinked materials, as well as their use in absorption applications.

Abstract: The disclosure relates to poly alpha-1,6-glucan ester compounds comprising poly alpha-1,6-glucan substituted with at least one ester group as defined herein and having a degree of substitution of about 0.001 to about 3.0. The poly alpha-1,6-glucan comprises a backbone of glucose monomer units wherein greater than or equal to 40% of the glucose monomer units are linked via alpha-1,6 glycosidic linkages, and optionally at least 5% of the backbone glucose monomer units have branches via alpha-1,2 and/or alpha-1,3 glycosidic linkages. Compositions comprising a poly alpha-1,6-glucan ester compound can be useful in various applications.

Abstract: Disclosed herein are compositions comprising at least one alpha-glucan graft copolymer derivative compound (e.g., ether or ester) having a degree of substitution (DoS) up to about 3.0. The precursors of these derivative compounds are graft copolymers that comprise a dextran backbone and alpha-glucan side chains. At least about 30% of the glycosidic linkages of the alpha-glucan side chains are alpha-1,3 glycosidic linkages. Further disclosed are methods of producing graft copolymer derivatives, as well as their use in various applications and products.

Abstract: The disclosure relates to poly alpha-1,6-glucan derivatives comprising poly alpha-1,6-glucan substituted with at least one organic group linked to the poly alpha-1,6-glucan through a linkage moiety selected from ether, sulfonyl, carbonate, or carbamoyl/carbamate, and having a degree of substitution of about 0.001 to about 3.0. The poly alpha-1,6-glucan comprises a backbone of glucose monomer units wherein greater than or equal to 40% of the glucose monomer units are linked via alpha-1,6 glycosidic linkages, and optionally at least 5% of the backbone glucose monomer units have branches via alpha-1,2 and/or alpha-1,3 glycosidic linkages. Compositions comprising a poly alpha-1,6-glucan derivative can be useful in various applications.

Abstract: Disclosed herein are food and food dough comprising at least flour and/or meal, and insoluble alpha-1,3-glucan. Further disclosed are methods of producing such food and food dough.

Abstract: A process is disclosed herein comprising the steps: a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis; b) combining the product obtained in step a) with polyacrylonitrile; and c) spinning fibers.

Abstract: Compositions are disclosed herein comprising one or more crosslinked dextrans or crosslinked dextran-poly alpha-1,3-glucan graft copolymers. Further disclosed are processes for preparing such crosslinked materials, as well as their use in absorption applications.

Abstract: A process is disclosed herein comprising the steps: a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis; b) combining the product obtained in step a) with polyacrylonitrile; and c) spinning fibers.

Abstract: The disclosure relates to polysaccharide derivatives comprising a polysaccharide substituted with at least one carbamate group, wherein the polysaccharide comprises poly alpha-1,3-glucan, poly alpha-1,3-1,6-glucan, or a mixture thereof, and the polysaccharide derivative has a degree of substitution of about 0.001 to about 3 with the carbamate group. The disclosure further relates to compositions comprising the polysaccharide derivative, and to a fiber, film, coating, or article comprising the polysaccharide derivative.

Abstract: Compositions are disclosed herein comprising one or more crosslinked dextrans or crosslinked dextran-poly alpha-1,3-glucan graft copolymers. Further disclosed are processes for preparing such crosslinked materials, as well as their use in absorption applications.

Abstract: A process is disclosed herein comprising the step of contacting an esterifying agent and a polysaccharide in the presence of a solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, wherein the polysaccharide ester composition comprises a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis. In one embodiment, the polysaccharide comprises poly alpha-1,3-glucan.

Abstract: A process is disclosed herein comprising the steps: a) contacting an esterifying agent and a polysaccharide in the presence of a first solvent and suitable reaction conditions for a reaction time sufficient to form a product comprising a polysaccharide ester composition, the polysaccharide ester composition comprising a polysaccharide ester having a degree of substitution of about 0.001 to about 3; wherein the esterifying agent comprises an acyl halide, a phosphoryl halide, a carboxylic acid anhydride, a haloformic acid ester, a carbonic acid ester, or a vinyl ester; and the ratio of esterifying agent to polysaccharide is in the range of about 0.001:1 to about 3:1 on a molar equivalent basis; b) combining the product obtained in step a) with polyacrylonitrile; and c) spinning fibers.

Abstract: A method for making polysaccharide dialdehydes is disclosed, which uses a combination of precipitation and separation steps to purify the polysaccharide dialdehyde formed by oxidation of a polysaccharide with periodate. The method is simple, rapid, and provides a polysaccharide dialdehyde having very low levels of iodine-containing species and a low ash content. The polysaccharide dialdehyde is particularly suitable for preparing hydrogel adhesives for medical applications.

Abstract: The invention pertains to a process for preparing a printing form from a curable composition that includes an bisphenol-based epoxy resin; an amine curing agent selected from primary amines and secondary amines, the agent having an amine equivalent weight of less than or equal to 200 g/equivalent; and, a multi-epoxy reactive diluent. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.

Abstract: The invention pertains to a printing form and a process for preparing the printing form from a curable composition that includes an epoxy novolac resin having an epoxide equivalent weight of 156 to 300 g/equivalent, and an amine curing agent selected from primary amines and secondary amines, the agent having an amine equivalent weight of less than or equal to 60 g/equivalent. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.

Abstract: A method for purifying liquid alkanes, especially dicyclic alkanes, for use in immersion lithography is provided. The method produces alkanes having absorbance at 193 nm of ?0.1/cm, and residue of ?100 ppm. The liquid alkane compositions are useful as immersion liquids in photomicrolithography employed for production of electronic circuits.

Abstract: A process for preparing amide acetals represented in Formula I comprising dehydrating a reactant mixture comprising reactants selected from a group consisting of N-acyl dialkanol amines, O-acyl dialkanol amines and mixtures thereof wherein n and m are independently 2 or 3; p is 1, 2 or 3; R1 and R2 can be the same or different and are each independently hydrogen, a linear or branched alkyl, cycloalkyl or aryl group with 1-20 C atoms; R represents hydrogen, a branched or linear alkyl, cycloalkyl, aryl or an alkenyl group with 1-20 C-atoms, each may have one or more substituents.

Abstract: Iron, cobalt, chromium or vanadium complexes of 2,6-pyridinedicarboxaldehydes diimines and 2,6-diacylpyridines diimines which are suitable for catalyzing the oligomerization of ethylene to ?-olefins exhibit more prolonged catalytic activity if aryl groups attached to the imino carbon atom(s) are substituted with at least one nitro group.

Abstract: Described in this invention is a catalytic process for making amide acetals from nitrites and diethanolamines. Amide acetals can be further crosslinked by hydrolyzing the amide acetal groups, and subsequently reacting the hydroxyl groups and/or the amine functions that are formed, to crosslink the composition.

Abstract: A melt polymerization process for the preparation of poly(1,3-propylene-co-isosorbide) terephthalate (3GIT), new 3GITs and products made from the 3GITs. The process comprises (a) providing a mixture comprising terephthalic acid or its alkyl ester, 1,3-propanediol and isosorbide in a molar ratio of diols to terephthalic acid or its alkyl ester of from about 1.1:1 to about 1.6:1 and a molar ratio of 1,3-propanediol to isosorbide of from about 2:1 to about 10:1; (b) reacting the mixture in an inert atmosphere at a temperature of about 180 to about 245° C., with concurrent removal of a distillate comprising at least 80% of the water or alkanol volatile reaction product, wherein the distillate contains less than about 5 weight % 1,3-propanediol and less than 1 weight % isosorbide; and (c) continuing the reaction in the presence of a polycondensation catalyst at a pressure of about 0.25 to about 2 mm Hg and about 245 to about 260° C.