Patents
Sitemap › C08 - Organic macromolecular compounds; Their preparation or chemical working-up; Compositions based thereon › C08B - Polysaccharides; Derivatives thereof › C08B 11 - Preparation of cellulose ethers
Patents for C08B 11 - Preparation of cellulose ethers (2,701)
09/1984
09/05/1984EP0117419A1 Process for the preparation of highly substituted carboxyalkyl celluloses and their mixed ethers
08/1984
08/08/1984EP0114990A2 Ethylhydroxyalkylmethylcellulose ethers
07/1984
07/17/1984US4460766 Dispersing auxiliary for preparing cellulose ethers
07/17/1984CA1171082A1 Preparation of cmc with improved substituent uniformity using borax
07/03/1984US4458068 Protective colloids
06/1984
06/26/1984US4456751 Multiple stage process for preparing mixed hydroxyalkylcellulose ethers
06/19/1984US4455169 Carboxymethyl hydroxyethyl cellulose
06/12/1984US4454045 Ion exchanging
05/1984
05/29/1984CA1168230A1 Controlled release compositions
05/23/1984EP0108991A1 Process for preparing cellulose ethers from cellulose activated by ammonia
04/1984
04/25/1984EP0106228A1 Sodium carboxymethylcellulose
04/11/1984EP0105231A2 Process for etherifying cellulose with alkyl esters of monochloroacetic acid
04/11/1984EP0105171A1 Process for preparing dispersive cellulose ethers
04/04/1984EP0104467A2 Esterified carboxymethyl celluloses and a process for the preparation of them
03/1984
03/28/1984EP0104009A1 Process for making cross-linked carboxymethyl hydroxyethyl cellulose
03/28/1984EP0103970A2 Amine salts and products containing them
03/21/1984EP0103164A2 Process for preparing cellulose derivatives with desired solution viscosities
03/20/1984US4438264 Process for the production of hydroxyethyl methyl cellulose
03/20/1984US4438262 Highly dielectric polysaccharides
03/14/1984EP0102505A2 Method for controlling cellulose etherification reaction
03/06/1984US4435564 Compositions and processes for using hydroxyethyl cellulose in heavy brines
03/06/1984CA1163090A1 Fluid loss control in saturated salt cement slurries
01/1984
01/31/1984US4429120 Ethylhydroxyalkylmethylcellulose ethers
01/17/1984US4426518 Process for producing an alkali salt of a carboxymethylcellulose ether
01/03/1984US4424347 Modified hydroxyalkyl celluloses and method of preparation
12/1983
12/13/1983US4420611 Stabilization of irradiated carboxymethyl cellulose
12/06/1983US4419510 Vapor phase
12/06/1983CA1158159A1 Hydroxyalkyl starch drug carrier
11/1983
11/15/1983US4415683 Resistant to bacteria; coloring; hazing; paints; protective coatings
11/15/1983US4415124 Consolidation, embrittlement, and grinding
11/15/1983CA1157180A1 Method of improving dispersibility of anionic cellulose ethers
11/09/1983EP0093368A1 Process for preparing hydroxyalkylmethyl cellulose ethers
11/01/1983US4413121 Cellulose ethers and cellulose mixed ethers having at least one phosphorus-containing substituent, and process for their manufacture
10/1983
10/25/1983CA1155837A1 Method of preparing hydroxyethyl ethers of cellulose
10/18/1983US4410694 Process for producing fibrous carboxymethyl cellulose
10/18/1983US4410693 Process for preparing cellulose derivatives
10/05/1983EP0090271A2 Stabilization of alkali polysaccharides
09/1983
09/13/1983US4404370 Purification of cellulose and starch ethers with counter current washing
08/1983
08/30/1983US4401813 Process for preparing alkali metal salt of carboxymethyl cellulose
08/23/1983US4400502 Readily dispersible anionic, water-soluble cellulose derivatives and a method for their preparation
08/09/1983US4398024 Solid-jacket sieve centrifuge
07/1983
07/26/1983USRE31323 Preparation of water-insoluble carboxymethyl cellulose absorbents
07/26/1983US4395546 Decoloring effluents
07/06/1983EP0083056A2 Hydroxyalkyl celluloses with stability against degradation, process for their preparation and their use
06/1983
06/28/1983US4390692 Amide catalyst
06/21/1983US4389393 Sustained release therapeutic compositions based on high molecular weight hydroxypropylmethylcellulose
06/08/1983EP0080678A2 Process for preparing water-soluble cellulose ethers with dimethoxyethane as a dispersing agent
05/1983
05/17/1983US4384113 Contacting with tetravalent onium salt prior to mixing with a strong base
04/1983
04/26/1983US4381239 Method for reducing the pyrogen content of or removing pyrogens from substances contaminated therewith
04/20/1983EP0076988A2 Process for preparing cellulose ethers
04/13/1983EP0076698A2 Highly dielectric polysaccharides
04/12/1983US4379918 Process for preparing water-soluble phosphonomethyl ethers of cellulose
03/1983
03/23/1983EP0074631A1 Process for producing an alkali salt of a carboxymethylcellulose ether
02/1983
02/01/1983CA1140541A1 Modified nonionic cellulose ethers
01/1983
01/18/1983CA1139746A1 Continuous process and apparatus for producing water-soluble hydroxyalkyl cellulose and related ethers
12/1982
12/28/1982US4366310 Controlled release compositions
12/21/1982US4364836 Process for the removal of alkali metal halides from cellulose ethers soluble in cold water and use of the purified products in washing and cleansing agent compositions
12/14/1982US4363784 Apparatus for continuously producing water-soluble hydroxyalkyl cellulose and related ethers
12/07/1982CA1137080A1 Surfactant-soluble cellulose derivatives
11/1982
11/17/1982EP0064722A2 Process for the purification of mixtures containing water, salts, glycolate ions and organic solvents, and the application of this process to the preparation of alkali carboxymethyl polysaccharide ethers
11/09/1982US4358587 Water-soluble cellulose mixed ethers which contain a phosphonomethyl substituent and a process for preparing same
11/02/1982US4357468 Sorbents of cellulose basis capable of forming inclusion complexes and a process for the preparation thereof
10/1982
10/06/1982EP0061686A2 Cellulose ether and cellulose mixture ether having at least a phosphorous-containing substituent, and process for their preparation
07/1982
07/20/1982US4340731 Polycarboxyalkyl-cellulose having high fluid absorbing and retaining properties, and process for preparing same
07/14/1982EP0055820A1 Preparation of CMC with improved substituent uniformity using borax
07/13/1982US4339574 Reaction of alkali cellulose with alcohol
07/13/1982US4339573 Preparation of cellulose derivatives using highly reactive alkali cellulose
07/13/1982CA1127635A1 Process for reducing the viscosity of cellulose ethers by means of ozone and application thereof
06/1982
06/22/1982US4336188 Method for the preparation of macromolecularized adenine derivatives
06/16/1982EP0053741A1 Purification of cellulose and starch ethers
06/15/1982CA1125931A1 Process for removing cationic substances from aqueous solutions
05/1982
05/26/1982EP0052337A2 Purification of cellulose and starch ethers
05/12/1982EP0051182A1 Process for preparing water-soluble phosphonomethyl-cellulose ethers
05/12/1982EP0051181A1 Water-soluble mixed cellulose ethers with a phosphonomethyl substituent, and a process for their preparation
05/11/1982US4329451 Preparing an aqueous dispersion of colloidal size particles of a water-insoluble polysaccharide derivative
04/1982
04/21/1982EP0049815A2 Process for preparing micropowders of cellulose ethers
02/1982
02/23/1982US4316982 Process for reducing the viscosity of cellulose ethers by means of ozone and application thereof
01/1982
01/19/1982US4311833 Process for preparing ethylcarboxymethylcellulose
01/12/1982US4310663 Continuous process for producing water-soluble hydroxyalkyl cellulose and related ethers
01/05/1982US4309535 Method of improving dispersibility of anionic cellulose ethers
12/1981
12/15/1981US4306080 Process for the purification of industrial effluents
12/15/1981US4306061 Preparation of CMC with improved substituent uniformity using borax
12/09/1981EP0041364A1 Method of preparing hydroxyethyl ethers of cellulose
11/1981
11/03/1981US4298728 Method of preparing hydroxyethyl ethers of cellulose
11/03/1981US4298395 Halogenated pyrimidine activator for binding ligands
10/1981
10/21/1981EP0038107A2 Method of improving dispersibility of water-soluble anionic cellulose ethers
10/20/1981US4296235 Process for the removal of alkali metal halides from cellulose ethers soluble in cold water and use of the purified products in washing and cleansing agent compositions
09/1981
09/29/1981US4292426 Process of producing hydroxypropyl cellulose
09/16/1981EP0035653A2 Process for the continuous preparation of cellulose ethers
09/08/1981CA1108364A1 Method of manufacturing cellulose derivative
09/02/1981EP0034692A2 The use of starch derivatives as indicators
08/1981
08/18/1981CA1107268A1 Preparation of water-insoluble carboxymethyl cellulose absorbents
08/11/1981US4283229 Process for the preparation and use of stable cellulose ether suspensions
07/1981
07/15/1981EP0032004A2 Controlled release compositions
07/14/1981US4278790 Lithium chloride, dimethylacetamide
06/1981
06/09/1981US4272526 Hypnotics
04/1981
04/21/1981US4263146 Contacting with anionic cellulose
04/21/1981CA1099708A1 Cellulosic ion exchange fibers and preparing method thereof
04/07/1981CA1098692A1 Process and apparatus for the continuous drying and/or granulating of loose material
03/1981
03/24/1981CA1098245A1 Crosslinkable polymeric compounds
1 ... 16 17 18 19 20 21 22 23 24 25 26 27 28