Patents for C08B 15 - Preparation of other cellulose derivatives or modified cellulose (3,279)
12/1983
12/27/1983US4423158 Ion adsorbent for metals having a coordination number greater than two
12/06/1983CA1158159A1 Hydroxyalkyl starch drug carrier
10/1983
10/13/1983WO1983003433A1 Procedure for treating cellulose derivative fibres
10/04/1983CA1154560A1 Method of producing absorbable surgical suture material based on monocarboxycellulose
09/1983
09/13/1983US4404371 Alkyl chloroformates, tert-amine catalysis
09/13/1983US4404369 Reacting cellulose with urea dissolved in ammonia
07/1983
07/26/1983USRE31323 Preparation of water-insoluble carboxymethyl cellulose absorbents
07/26/1983US4395546 Decoloring effluents
07/07/1983WO1983002279A1 Procedure for precipitating cellulose derivative
07/07/1983WO1983002278A1 Procedure for producing soluble cellulose derivatives
07/05/1983US4391973 Readily hydratable cellulose and preparation thereof
07/05/1983CA1149380A1 Alloy fibers of rayon and an alkali metal or ammonium salt of a copolymer of polyacrylic acid and methacrylic acid having improved absorbency
06/1983
06/28/1983US4390692 Amide catalyst
05/1983
05/11/1983WO1983001622A1 Polysaccharide-based product
05/10/1983US4383089 Process for the production of polyepoxy silicate resin
05/10/1983US4383078 Process for the production of alkali metal polyhydroxy lignin-cellulose polymer
05/03/1983US4382136 Epoxide, lewis acid
04/1983
04/19/1983US4380592 Process for the production of polyhydroxy lignin-cellulose silicate polymer
03/1983
03/22/1983US4377674 Process for the production of polyhydroxy lignin-cellulose silicate polymer
03/22/1983US4377669 Photocrosslinkable polyester with side tricyclic imidyl groups
03/22/1983US4377668 Photoresists
03/08/1983US4376173 Lignin, cellulose, polyurethane foam, polyisocyanate
03/08/1983US4376171 Lignin, cellulose, polyurethane foam
02/1983
02/22/1983CA1141758A1 Microfibrillated cellulose
02/08/1983US4372328 Fibrous material for tobacco smoke filter
02/01/1983CA1140328A1 Aqueous solutions containing crosslinked hydroxyethyl carboxyethyl cellulose
01/1983
01/04/1983US4367326 Process for the production of polyepoxy silicate resins
12/1982
12/28/1982US4366310 Controlled release compositions
12/28/1982US4366070 Viscosifier & fluid loss control system
12/21/1982US4364393 Treating an oxidized cellulose thread with a transition metal salt complexing with a polydentate; high tensile strength
11/1982
11/16/1982US4359548 Polyesterurethane copolymers
11/02/1982US4357468 Sorbents of cellulose basis capable of forming inclusion complexes and a process for the preparation thereof
11/02/1982US4357467 Acid hydrolysis with hydrochloric acid
08/1982
08/31/1982US4347345 Process for the production of broken-down organic lignin-cellulose silicate polymers
08/04/1982EP0057105A2 Method of producing alkali-soluble cellulose carbamate
07/1982
07/21/1982EP0056360A1 Cross-linked carboxymethylcellulose carbonate and preparation thereof
07/20/1982US4340731 Polycarboxyalkyl-cellulose having high fluid absorbing and retaining properties, and process for preparing same
07/20/1982US4340585 Salified anionic resin for cholesterol and lipid lowering
07/13/1982US4339366 Process for the production of polyester resins
07/13/1982CA1127792A1 Photocrosslinkable polymers with side tricyclic imidyl groups
07/07/1982EP0055556A2 Conversion of municipal waste to fuel
07/06/1982CA1127151A1 Cross-linking of cellulose sulfate esters with tetravalent metal ions
06/1982
06/29/1982US4337095 Hydroxymethyl cellulose from paraformaldehyde and cellulose
06/22/1982US4336340 Process for the production of broken-down organic lignin-cellulose polymers
06/01/1982US4332916 Ion exchange polymers on improved porous substrates
05/1982
05/18/1982US4330440 Activated matrix and method of activation
05/11/1982CA1123415A1 Preparation of water-insoluble carboxymethyl cellulose absorbents
04/1982
04/06/1982US4323494 Oxidated silicon acid, polyisocyanate, polyurethane
03/1982
03/31/1982EP0048612A2 Thickener and method for making same
03/23/1982US4321367 Method for the preparation of cross-linked polysaccharide ethers
03/02/1982US4317752 Polyurethane foams; insulation; construction materials
02/1982
02/09/1982US4314916 Process for the production of broken down lignin-cellulose silicate copolymers
02/02/1982US4313857 Broken-down organic lignin-cellulose silicate polymers
01/1982
01/27/1982EP0044658A1 Improved method of increasing the accessibility of cellulosic material in lignocellulosic materials
01/27/1982EP0044622A2 Solubilisation and hydrolysis of carbohydrates
01/26/1982US4312981 Modified cellulosic products having enhanced thermal, solvent, and biological properties
01/06/1982EP0043097A1 Hardenable coating and binding agents, and their use
12/1981
12/15/1981US4306080 Process for the purification of industrial effluents
12/01/1981US4303786 Isonitrile derivatives of macromolecules containing hydroxyl groups
11/1981
11/03/1981US4298395 Halogenated pyrimidine activator for binding ligands
10/1981
10/06/1981CA1110009A1 Process for the preparation of solutions of cellulose derivatives which can be coagulated and spun to form regenerated cellulose bodies
09/1981
09/29/1981US4292214 Process for the production of polyurethane products
09/01/1981US4286964 Polyfunctional epoxides and halohydrins used as bridging groups to bind aromatic amine group-containing alcohols and thiols to hydroxyl bearing substrates
08/1981
08/18/1981CA1107268A1 Preparation of water-insoluble carboxymethyl cellulose absorbents
08/11/1981US4283509 Photocrosslinkable polymers with side tricyclic imidyl groups
08/11/1981US4283311 Process for the production of broken down cellulose copolymers
08/11/1981CA1106841A1 Activated matrix and method of activation
07/1981
07/21/1981CA1105209A1 Textile conditioning compositions with low content of cationic materials
07/15/1981EP0032004A2 Controlled release compositions
06/1981
06/16/1981CA1103158A1 Method for preparing biocompatible materials and articles produced thereby
04/1981
04/22/1981EP0027377A1 Derivatives of hydroxyl-bearing substrates, process for their preparation and a method of application
04/21/1981US4263274 Applying aldehyde starches
04/14/1981CA1099439A1 Photocross-linkable polymers
04/08/1981EP0026204A1 Process for the production of alkali metal-cellulose-silicates and their reaction products
03/1981
03/31/1981US4259355 Chewing gum containing flavor composition and flavor composition therefor
03/24/1981US4258136 Process for producing wood adsorbents for mercury ions by graft polymerization of acrolein onto xanthated wood meal followed by conversion to thiosemicarbazone
03/24/1981CA1098245A1 Crosslinkable polymeric compounds
02/1981
02/24/1981CA1217765B Method of rendering lignin separable from cellulose and hemicellulose in lignocellulosic material and the product so produced
02/24/1981CA1096374A1 Method of rendering lignin separable from cellulose and hemicellulose in lignocellulosic material and the product so produced
02/11/1981EP0023561A1 Polycarboxyalkyl-cellulose having high fluid absorbing and retaining properties, and process for preparing same
02/10/1981US4250306 Process and equipment for preparing swellable cross-linked carboxyalkylcelluloses from natural cellulose or cellulose hydrate and use thereof
02/03/1981US4248595 Process for preparing swellable cross-linked carboxyalkylcelluloses, in the form of fibers, from cellulose hydrate and use thereof
01/1981
01/27/1981US4247657 Process for the production of alkali metal-cellulose-silicates and their reaction products
01/07/1981EP0020469A1 Process for depolymerising cellulose fibers and depolymerised cellulosic material with a low crystallinity degree obtainable by this process.
01/06/1981US4243776 Preparation of non-thrombogenic polymeric material article with platelet anti-aggregative agent
12/1980
12/30/1980US4242506 Cross-linking of cellulose sulfate esters with tetravalent metal ions
12/23/1980US4241194 Amino resin or phenolic resin products are useful for thermal or sound insulating building materials
12/23/1980CA1092287A1 Method for the preparation of polymers which contain free or salified aminic groups and quaternary ammonium groups and products obtained thereby
12/23/1980CA1092083A1 Ionically modified cellulose materials
12/02/1980US4237016 Textile conditioning compositions with low content of cationic materials
11/1980
11/26/1980EP0019403A2 Hydroxyalkyl-starch drug carrier
11/13/1980WO1980002374A1 Hydroxyalkyl starch drug carrier
10/1980
10/16/1980WO1980002142A1 Process for the production of alkali metal-cellulose-silicates and their reaction products
10/07/1980US4226982 Process to break down cellulose polymers and produce cellular solid or solid reaction products
09/1980
09/23/1980US4224439 Carbonylated polysacchride; affinity chromatography matrix; immobilization of biologically active compounds; radioimmunoassay
09/09/1980CA1085388A1 Cationically modified cellulose-containing materials and their use for the purification of industrial effluent
09/02/1980US4220757 Process for the production of alkali metal-cellulose-silicates and their reaction products
08/1980
08/19/1980CA1084048A1 Process for the preparation of high d.s. polysaccharides
07/1980
07/09/1980EP0012804A1 Salts of a non toxic, activated anion exchange resin capable of establishing a stable binding with bile acids and 2-(4'-(p-chlorobenzoyl)-phenoxy)-2-(methyl)-propionic acid and pharmaceutical compositions comprising these salts
05/1980
05/01/1980WO1980000843A1 Depolymerised cellulosic material with a low cristalline ratio obtained from cellulose fibres and method of preparation
1 ... 22 23 24 25 26 27 28 29 30 31 32 33