Abstract: A cellulose resin produced by binding cardanol or a derivative thereof to cellulose or a derivative thereof with the use of a cellulose hydroxy group of the cellulose or a derivative thereof and the phenolic hydroxy group of the cardanol or a derivative thereof.

Abstract: Mixed cellulose esters derived from natural products (e.g., natural cellulose esters) may be produced by methods that include acylating a cellulose with a natural esterification reactant or a derivative thereof to yield a natural cellulose ester. In some instances, the natural esterification reactant derivative may be a saponified natural esterification reactant. In some instances, the natural cellulose esters may have a glass transition temperature of about ?55° C. to about 170° C.

Abstract: Cellulose acetates and processes for producing same. The process involves esterifying a cellulose containing material in the presence of a densified gas such as supercritical carbon dioxide to form a cellulose acetate product having a degree of substitution less than 3. The cellulose acetate preferably is sulfate-free.

Abstract: Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by esterifying cellulose in a reaction medium comprising one or more halide ionic liquids and at least one binary component. Cellulose esters prepared via the methods of the present invention can have a degree of substitution (“DS”) of at least 1.5 and can comprise a plurality of ester substituents, where at least 50 percent of the ester substituents comprise alkyl esters having a carbon chain length of at least 6 carbons.

Abstract: An object of the invention is to provide cellulose fibers which can give a cellulose composite that renders high transparency, a reduction in linear expansion coefficient, and a high modulus of elasticity possible. The invention relates to: a process for producing modified cellulose fibers which includes a modification reaction step of reacting cellulose with an aromatic compound in an organic acid to thereby modify the cellulose with an aromatic-ring-containing substituent; cellulose fibers modified with aromatic-ring-containing substituent; a dispersion of the cellulose fibers; and a cellulose fiber composite obtained from the same.

Abstract: A cellulose acylate film satisfying Re?40 is produced by transporting a cellulose acylate film having a substitution degree of acyl substituted for hydroxyl group of cellulose of 2.88 or higher, and subjecting the film to heat treatment at 160° C. or higher.

Abstract: The present invention relates to fluorinated biopolymer and polymer derivatives useful as imaging probes, diagnostic agents and contrast agents and to imaging methods employing the fluorinated biopolymers and polymers.

Abstract: A fatty acid ester of cellulose having excellent transparency, filterability and spinnability in spite of its high content of mannose and xylose, wherein the total molar content of mannose and xylose accounts for at least 7% of that of glucose, mannose and xylose, and the amount of filtration satisfies a specified requirement. Such a fatty acid ester of cellulose is prepared by using a pulp having a low .alpha.-cellulose content as a raw material and a fatty acid corresponding to the ester as a diluent and adding an organic solvent in an amount of at least 10% by weight based on the diluent in any step during the preparation. In the preparation of cellulose diacetate, which excellent filterability and transparency, by the acetic acid process, the cellulose diacetate obtained by aging is dissolved in a solvent which can dissolve it and the resulting cellulose diacetate is recovered.

Abstract: A solid composition of matter comprising one or more polysaccharides which has been cross-linked with either titanium or zirconium cross-linking agents is provided. The composition demonstrates absorbent properties and is useful in absorbent articles of manufacture. Also provided is a method for preparing the compositions.

Abstract: The present invention provides a process for the preparation of water soluble alkali metal salts of cellulose sulfate having a degree of substitution ranging from 1 to 3 and viscosity of 1 percent aqueous solution in excess of 20 centipoises (cps). The process involves the use of chlorosulfuric acid as a sulfonating agent in the presence of pyridine used as a solvent in reaction. The important steps of the process for preparation of the water soluble salts include presoaking of the cellulose in pyridine followed by washing the pyridine salt with an alcohol such as methanol and reacting saturated alkali metal bicarbonate or carbonate solutions with the sulfonated cellulose.

Abstract: Provided is a novel improved process for the preparation of .alpha.-D-cellobiose octaacetate via the acetylative degradation of cellulose or cellulose acetate. The title compound is provided in high yield and quality in a facile one-pot process, amenable to large-scale synthesis.

Abstract: Process for the preparation of finely divided porous cellulose in the form of essentially spherical particles by formation of a suspension, in which an organic solution of a cellulose ester of aromatic or aromatic-aliphatic carboxylic acids containing a C.sub.5 -C.sub.12 alkanol is stirred into an aqueous solution of an anionic surfactant, the solvent is removed and the particles are isolated and hydrolyzed under heterogeneous conditions. They are suitable as adsorbents in e.g. chromatographic processes.

Abstract: A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R" is H or R, R"' denotes R, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and r=0 to 1. A process for preparation of the cellulose derivatives is also disclosed.

Abstract: A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein Cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R" is H or R, Z corresponds to the following groups of atoms: SR", SO.sub.3 H and salts thereof, SO-R, SONR".sub.2, SO.sub.2 -R, SO.sub.2 NR".sub.2, SO.sub.2 H and salts thereof, F, Cl, Br, I, NR".sub.2, PR".sub.2, PO.sub.3 H.sub.2 and salts thereof, PO.sub.2 H(OR), PO(OR).sub.2, PO.sub.2 HR" and salts thereof, POR"(OR) and POR".sub.2, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and z=0.01 to 0.45. A process for preparation of the cellulose derivatives is also disclosed.

Abstract: A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is unmodified cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, m=0.75 to 2.85, and x=0.005 to 2.10. A process for preparation of the cellulose derivatives is also disclosed.

Abstract: The preparation of microcrystalline triacetylcellulose by acid-catalyzed acetylation of microcrystalline cellulose, perfluoroalkanesulfonic acids with 1 to 8 carbon atoms are used as the catalyst, resulting in a non-hazardous process and high yields of exceptionally high purity product, the latter being particularly suitable for chromatographic purposes, in particular for the chromatographic resolution of racemates.

Abstract: Cellulose is modified by the provision of up to 5% by weight of fluorinated ester groups. This material is substantially indistinguishable from cellulose by termites seeking food but is sufficiently toxic to them to be utilizeable as a highly efficient termiticide while being relatively harmless to mammals.

Abstract: A fluorine-containing cellulose derivative which is represented by the general formula: ##STR1## wherein R is acetyl group which may be partially replaced by propionyl or butyryl group, x is 1.7-2.5, y is 0.05-0.6, p is 0,1,2 or 3 and n is the degree of polymerization, to be usable for the material of fibers, moldings, films, semipermeable membranes, coatings or the like.

Abstract: It has been found that certain polymers containing pendant diazo ester groups are photosensitive and have utility in the preparation of both lithographic and relief printing plates, as well as for etching resists for printed circuits. This is a continuation of application Ser. No. 412,218, filed Nov. 2, 1973 now abandoned.