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| Number | Title | Issue Date |
| 5977346 | Fatty acid ester of cellulose, cellulose diacetate and processes for the preparation thereof 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 an... | 11/02/1999 |
| 5532350 | Crosslinked polysaccharides useful as absorbent materials 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 m... | 07/02/1996 |
| 5378828 | Process for preparing soluble alkali metal salts of cellulose sulfate using chlorosulfuric acid and pyridine 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 pr... | 01/03/1995 |
| 5294703 | Process for preparing -D-cellobiose octaacetate Provided is a novel improved process for the preparation of -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 ... | 03/15/1994 |
| 5026841 | Process for the preparation of finely divided porous cellulose particles 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... | 06/25/1991 |
| 4997935 | Modified cellulose for biocompatible dialysis membranes III and process for preparation thereof 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'... | 03/05/1991 |
| 4981959 | Modified cellulose for biocompatible dialysis membranes II and process for preparation thereof 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... | 01/01/1991 |
| 4981960 | Modified cellulose for biocompatible dialysis membranes IV and process for preparation thereof 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'... | 01/01/1991 |
| 4697007 | Preparation of microcrystalline triacetylcellulose 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 ex... | 09/29/1987 |
| 4582901 | Fluorinated cellulose esters and the use thereof as termiticidal compositions 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 te... | 04/15/1986 |
| 4487926 | Fluorine-containing cellulose derivatives 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 d... | 12/11/1984 |
| 4038253 | Photocross-linkable polymers containing pendant diazoester groups 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 continuati... | 07/26/1977 |
