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JPH0647601B2 |
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JPH0647604B2 |
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JPH06505292A |
A one step process for preparing cellulose diacetates from processed film having cellulose triacetate as a base. The process involves use of an organic acid such as acetic acid and a solvolysis agent such as an alkanol or water. Hydrogen...
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JPH0643441B2 |
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JPH06122672A |
PURPOSE: To obtain a new compd. which makes possible introduction of an urethane protecting group into an amino acid and which makes possible simple and economical preparations of an activating carrier for bonding to a nucleophilic compo...
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JPH06503595A |
Cellulose esters of polycarboxylic acids, and their salts, such as the hydrogen cellulose ester of succinic acid, and the potassium salts thereof, are known to be useful in the preparation of conductive layers in composite such as photog...
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JPH06503112A |
(57) [Summary] Since this publication is application data before electronic filing, summary data is not recorded.
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JPH0622801B2 |
Reaction of lignocellulosic material with acetic anhydride greatly improves dimensional stability and resistance to biological attack and is, according to the invention, made in the absence of any cosolvent or added catalyst and in a sim...
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JPH06502214A |
PCT No. PCT/EP92/01669 Sec. 371 Date Mar. 19, 1993 Sec. 102(e) Date Mar. 19, 1993 PCT Filed Jul. 22, 1992 PCT Pub. No. WO93/03064 PCT Pub. Date Feb. 10, 1993A new process has been developed for separating the water and acetic acid presen...
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JPH0665301A |
PURPOSE: To provide a composition and its usage for preventing or curing colonic polyp. CONSTITUTION: The compound shown by the formula is administrated to patients having colonic polyp. In the formula, Q is a deprotonated residue of a p...
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JPH0611334B2 |
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JPH0632801A |
PURPOSE: To produce the useful cellulose esters of high molecular weight economically in a short reaction time by adding cellulose polymer to a mixture of anhydrous trifluoro acetic acid and a specific anhydrous acyl. CONSTITUTION: Allow...
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JPH0586961B2 |
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JPH0582841B2 |
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JPH0579681B2 |
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JPH05507302A |
(57) [Summary] Since this publication is application data before electronic filing, summary data is not recorded.
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JPH05506046A |
(57) [Summary] Since this publication is application data before electronic filing, summary data is not recorded.
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JPH05163301A |
PURPOSE:To produce a cellulose acetate dope which has a high concentration with a low insoluble content and does not corrode metal even when in contact therewith over a prolonged time CONSTITUTION:A mixture of cellulose triacetate and a ...
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JPH0594006A |
PURPOSE: To improve the film strength, moisture resistance and light fastness of the above pellicle by consisting the pellicle of a specific carbonated cellulose deriv. CONSTITUTION: A transparent thin film substantially consisting of th...
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JPH0565301A |
PURPOSE:To obtain the subject derivative excellent in humidity resistance, weathering resistance, etc., and desirable as a coating resin, an adhesive material or the like by reacting a cellulosic material with a specified carbonate compo...
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JPH0517255B2 |
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JPH05500684A |
Process for reducing the degree of substitution of cellulose esters employing Lewis acids as solvolysis promoters is disclosed. Novel low degree of substitution cellulose esters produced by the invention process are also described.
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JPH0479361B2 |
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JPH0477001B2 |
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JPH04333853A |
PURPOSE: To form stable images while preventing the generation of a too much change in electric resistance by environmental fluctuations and to substantially prevent the generation of charge drop-out by having a resin layer contg. hydrox...
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JPH04328754A |
PURPOSE: To provide a member for electrification capable of stably feeding a high-grade image not causing spotted fog, image defects, etc. CONSTITUTION: A resin layer contg. hydroxypropylcellulose is formed on the electric conductive ela...
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JPH04328755A |
PURPOSE: To provide a member for electrification capable of stably feeding a high-grade image not causing spotted fog, image defects, etc. CONSTITUTION: A resin layer contg. cellulose represented by a formula (C6H7 O2(OH)3-m(OCORm)n (whe...
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JPH04289285A |
PURPOSE: To produce pulp having novel physical properties at a low cost regardless of broadleaf trees or needle-leaf trees without using sulfur and chlorine by using a specific cellulose derivative as an active component. CONSTITUTION: W...
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JPH04505334A |
Compounds of the formula 1 PS - O - A - (CH2)n - B - D (1) wherein PS-O represents an alkoxide residue of any of the free hydroxy groups of a polysaccharide (PS-OH) compound with molecular weight (Mw) of from 40,000 to 5,000,000 selected...
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JPH0455622B2 |
The present invention concerns a cyclic process for producing an alkali aqueous solution of cellulose carbamate, for precipitating the cellulose carbamate from the alkali solution and for recovering and recycling the remaining chemicals....
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JPH0455621B2 |
The present invention concerns a cyclic process for producing an alkali solution of cellulose carbamate, for precipitating the cellulose carbamate from the alkali solution and for recovering and recycling the chemicals. The process compr...
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JPH04221385A |
PURPOSE: To provide a separation method of a diastereomer of a hetrazepine derivative into its enantiomer with high purity. CONSTITUTION: A diastereomer of a hetrazepine derivative is subjected to liquid chromatography using cellulose tr...
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JPH0430377B2 |
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JPH0428331B2 |
A tubular film sausage casing comprising a cellulose aminomethanate wherein from 0.5 to 30 numerical percent of the cellulose hydroxy groups have been substituted with aminomethanate groups. The casing may be crosslinked or may be fiber ...
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JPH0424367B2 |
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JPH0423603B2 |
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JPH0412418B2 |
A moisture sensitive material prepared by cross-linking cellulose acetate butyrate with at least one compound selected from the group consisting of compounds containing two or more isocyanate groups; copmpounds containing two or more epo...
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JPH0411255B2 |
This invention relates to an optical resolving agent containing cellulose acetate of the II type and provides an optical resolving agent which exhibits an excellent power of resolving various isomers, in particular, optical isomers which...
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JPH0380402B2 |
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JPH0379448B2 |
The invention refers to water-insoluble fibers of cellulose acetate cellulose propionate and cellulose butyrate with an extremely high absorptive capacity for water and physiological liquids and to a process for their preparation.
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JPH0372081B2 |
A fluorine-containing cellulose derivative which is represented by the general formula: +TR 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 th...
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JPH03249290A |
PURPOSE: To obtain a bleached cellulose having high crystallinity, low polymerization degree and narrow polymerization degree distribution by extracting a defibrated lignocellulose substance successively with water, an alcohol and a caus...
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JPH03199201A |
PURPOSE:To impart excellent weather resistance, moist heat resistance, dark- moist heat resistance and shelf stability and usefully prevent deterioration of a substrate of a photographic material, an optical filter, a protecting layer fo...
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JPH03184924A |
PURPOSE: To esterify an α-amino-protected amino acid, by esterfying an α-amino- suitably protected amino acid in an aprotic and non-basic solvent in the presence of 2,4,6-mesitylene-1-sulfonyl-3-nitro-1,2,4-triazolide and a weak base. ...
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JPH0347285B2 |
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JPH0345734B2 |
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JPH036921B2 |
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JPH02263833A |
PURPOSE:To decolor a blue coloring matter formed by crosslinking, expand utilization thereof for food, etc., and obtain the subject crosslinked product by crosslinking a specific amino group-containing compound with a ylidoid compound an...
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JPH0246601B2 |
A process for precipitating cellulose carbamate from alkali solution comprises contacting the solution with a solution containing inorganic salt, whereby the cellulose carbamate precipitates. The carbamate solution is spun in a solution ...
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JPH02227401A |
NEW MATERIAL:A compound expressed by formula I [l or m>=0; n>0; l+m+n=3; X is H, F or Cl; q is 1-200; p is 5-300 polymerization degree of cellulose derivative; R is cyano, (substituted) 1-8C alkyl, 2-8C acyl, aryl, hydroxyethyl, hydroxyp...
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