Patents for C08B 3 - Preparation of cellulose esters of organic acids (1,677) |
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01/27/1987 | US4639514 Cyclic process for producing an alkali solution of cellulose carbamate and precipitating the carbamate |
12/10/1986 | EP0204353A1 Process for the preparation of an ester from starch and a monocarboxylic acid, and a composition based on the starch ester thus prepared |
10/23/1986 | WO1986006081A1 Carboxylated cellulose ester and manufacture thereof |
09/24/1986 | EP0195605A2 Process of making gelled cellulose triacetate product and a product made thereby |
06/04/1986 | EP0183461A2 Radiation-curable cellulose coating |
05/20/1986 | US4590266 Reacting cellulose and acetic anahydride; sulfuric acid acetylation catalyst;a< acetic acid solvent |
05/20/1986 | US4590265 Carboxylated cellulose ester and manufacture thereof |
04/16/1986 | EP0178292A2 Process for preparing cellulose carbamates |
04/15/1986 | US4582901 Fluorinated cellulose esters and the use thereof as termiticidal compositions |
01/21/1986 | US4565857 Radiation-curable cellulose coating |
10/22/1985 | US4549012 Fluorinated cellulose acetate polymers |
09/24/1985 | US4543409 Water-insoluble fibers of cellulose acetate, cellulose propionate and cellulose butyrate with an extremely high absorptive capacity for water and physiological liquids |
09/04/1985 | EP0153659A2 Process for preparing microcrystalline triacetyl cellulose |
07/03/1985 | EP0146936A2 Process for preparing cellulose acetate |
06/18/1985 | CA1189068A1 Procedure for precipitating cellulose derivatives |
06/18/1985 | CA1189067A1 Procedure for producing soluble cellulose derivatives |
04/24/1985 | EP0138703A2 Carboxylated cellulose ester |
04/02/1985 | CA1184904A1 Preparation of highly reactive cellulose |
03/12/1985 | US4504355 Concentrator system |
12/11/1984 | US4487926 For uses as fibers, films, moldings, membranes, and coatings |
10/30/1984 | US4480090 Process for esterification of cellulose using as the catalyst the combination of sulfuric acid, phosphoric acid and a hindered aliphatic alcohol |
10/30/1984 | CA1177073A1 Method of producing alkali-soluble cellulose derivative |
10/17/1984 | EP0121776A1 Resolving agent |
07/25/1984 | EP0113824A2 Waterinsoluble fibres from cellulose acetate, cellulose propionate and cellulose butyrate with a very high absorption capacity for water and physiological fluids, and process for their preparation |
07/24/1984 | US4461892 Saponifying cellulose ester; for use as gel filtering material |
04/17/1984 | US4443595 Esterification, catalyst, coatings |
03/27/1984 | US4439605 Process for producing cellulose acetate |
01/24/1984 | CA1161035A1 Prevention of hornification of dissolving pulp |
11/15/1983 | US4415734 Process for preparation of cellulose acetate |
11/15/1983 | CA1157195A1 Modified polymers |
09/13/1983 | US4404369 Reacting cellulose with urea dissolved in ammonia |
08/16/1983 | US4399275 Hydroxyalkylation, acetylation, mercerization |
06/28/1983 | US4390691 Dissolving in chlorinated hydrocarbon, forming droplets, saponification |
05/24/1983 | US4385172 Prevention of hornification of dissolving pulp |
08/17/1982 | CA1129851A1 Antimicrobial poly-alcohols and derivatives thereof |
08/04/1982 | EP0057105A2 Method of producing alkali-soluble cellulose carbamate |
08/03/1982 | US4342865 Using hydrogen peroxide and a monopersulfate salt |
05/11/1982 | US4329451 Preparing an aqueous dispersion of colloidal size particles of a water-insoluble polysaccharide derivative |
05/11/1982 | US4329447 Catalyst for and method of preparing cellulose esters |
05/11/1982 | US4329446 Method of preparing cellulose esters |
03/10/1982 | EP0047064A1 Process for preparing porous, spherical cellulose particles |
02/02/1982 | US4314056 Catalyst for and method of preparing cellulose esters |
12/15/1981 | US4306060 Process for preparation of cellulose acetate |
12/15/1981 | US4305823 Modified with cyclic b-ketonic acids |
09/08/1981 | CA1108364A1 Method of manufacturing cellulose derivative |
08/04/1981 | CA1106364A1 Production of cellulose acetate |
07/14/1981 | CA1104867A1 Photosensitive recording material with a layer container nitrone in an alkali soluble polymer and a subadjacent metallic imaging layer |
06/02/1981 | US4271291 Process for recovering cellulose ester fines |
05/26/1981 | US4269972 Process for producing cellulose diacetate having improved resistance to delustering phenomenon in hot water |
04/07/1981 | US4260740 Carboxylated cellulose ion-exchange materials |
03/17/1981 | US4256877 Method of manufacturing cellulose derivative |
02/03/1981 | US4249000 Semipermeable membranes for reverse osmosis |
12/23/1980 | CA1092287A1 Method for the preparation of polymers which contain free or salified aminic groups and quaternary ammonium groups and products obtained thereby |
12/16/1980 | CA1091658A1 Bases for stable emulsions to be used as lubricants in die-casting, and processes for their manufacture |
11/18/1980 | US4234719 Methanol, carbon monoxide, acetic anhydride, methyl acetate |
11/18/1980 | US4234718 Methanol, carbon monoxide, acetic anhydride, ketene, methyl acetate, acetic acid |
10/14/1980 | US4228276 Direct precipitation method for producing extrusion-grade cellulose acetate powder and resulting product |
05/20/1980 | CA1078085A1 Nonbiodegradable polymers |
05/14/1980 | EP0010871A1 Carboxylated cellulose ion-exchange materials, process for their preparation and their use in removing heavy metal ions from aqueous solutions |
03/11/1980 | US4192228 Avoids breaking fibers |
01/08/1980 | US4182804 From hydrolyzed ethylene/vinyl acetate copolymer or polyvinyl alcohol |
10/30/1979 | CA1065312A1 Viscosity reduction of cellulose derivatives |
09/04/1979 | US4166809 Cellulose propionate n-butyrate and coating compositions containing same |
07/24/1979 | US4162359 Production of cellulose acetate |
01/23/1979 | CA1047033A1 Process for producing organic acid esters of cellulose |
01/02/1979 | US4132642 Process for filtering a cellulose acetate solution |
06/06/1978 | US4093509 Production of pulp slurries employing isatoic anhydride |
12/06/1977 | US4061859 Sulfur dioxide |
09/13/1977 | US4047862 Lightweight paper |
07/12/1977 | US4035457 Nonbiodegradable polymers |
06/14/1977 | US4029726 Cellulosic-liquid composite materials and process of preparing such materials |
04/19/1977 | US4018681 Filtration of cellulosic solutions |
04/05/1977 | US4016353 Esterification |
02/01/1977 | US4006059 Hydrophobic noncovalent binding of proteins to support materials |
12/28/1976 | US4000126 Translucent film and method for manufacturing the same |
06/08/1976 | US3962212 Phosphorylated cellulose ester membrane for use in separation or concentration of substances |
03/16/1976 | US3944518 Polyamides having improved dyeability and thermal stability |