Abstract: 1,3-glucan is effective to separate a compound from a mixture containing the same, in particular for the optical resolution.

Abstract: A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of optical isomers.

Abstract: Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.

Abstract: A fungicidal and bactericidal method of imparting fungicidal and bactericidal properties to an article by coating or impregnating the article with a solution of a quaternary ammonium salt of alginic acid or carboxymethyl cellulose (which is insoluble or sparingly soluble in water) in an organic solvent and thereafter removing the solvent from the article.

Abstract: 1,3-glucan is effective to separate a compound from a mixture containing the same, in particular for the optical resolution.

Abstract: A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of optical isomers.

Abstract: A mortar composition comprises a mortar and a carboxymethyl hydroxyethyl cellulose (CMHEC) having a degree of substitution (DS), by carboxymethyl group per a glucose unit, of 0.7 or less and a molar substitution (MS), by ethylene oxide per a glucose unit, of 1.2 to 7.0.

Abstract: A quaternary ammonium salt of carboxymethylcellulose having the formula ##STR1## wherein R is a hydrogen atom or a quaternary ammonio carboxymethyl group, and n is an integer from 10 to 1000, provided that a degree of substitution by carboxymethyl group per anhydrous glucose unit in said carboxymethylcellulose is 1.5 or more.

Abstract: A process for preparing a graft polymer by subjecting a cyclic ester to ring-opening polymerization in the presence of a cellulose derivative in the presence of a ring-opening polymerization catalyst for the cyclic ester. The resulting graft polymer has high transparency, good film-formability and high solubility and can be suitably used as a novel polymer material.

Abstract: A carboxyalkyl acetyl cellulose having a degree of substitution (DS) by the carboxyalkyl group per anhydroglucose unit of 0.2-2.5 and a degree of substitution (DS) by acetyl group per anhydroglucose unit of 0.5-2.8, the alkyl in the carboxyalkyl group being a C.sub.1-3 alkyl, and a salt thereof, and a process for the preparation of carboxyalkyl acetyl celluloses by acetylating an alkali metal salt of a carboxyalkyl cellulose having a degree of substitution by the carboxyalkyl group per anhydroglucose unit of 0.2-2.5, after converting it into the acid-form by treatment with an aqueous acid solution, with acetic anhydride in the presence of catalyst to obtain a carboxyalkyl acetyl cellulose having a degree of substitution by the carboxyalkyl group per anhydroglucose unit of 0.2-2.5 and a degree of substitution by acetyl group per anhydroglucose unit of 0.5-2.8, and if needed converting it into the corresponding salt.

Abstract: Novel cellulose ester derivatives having good solubility which are useful for coating agent, thickening agent, protective colloid, etc.; and a method for the preparation of said cellulose ester derivatives wherein cellulose is reacted with a specific lactone such as glycolide, lactide or .epsilon.-caprolactone in a solvent and in the presence of a catalyst for esterification.

Abstract: This invention relates to a process for producing ethylcarboxymethylcellulose 0.4 to 1.2 in D.S. of carboxymethyl and 1.5 to 2.5 in D.S. of ethyoxyl. The compound of the present invention possesses good solubility in organic solvents and is useful as an enteric coating material.

Abstract: A smoking composition comprising, as one component, an ester of one or more aliphatic acids and a carbohydrate including cellulose, starch, and the like. The smoking composition is mild and non-irritating, has no off-flavor, and no unpleasant aftertaste remains after smoking.