Class 536/86 - Comminuting

Subclass of Class 536 - Organic compounds -- part of the class 532-570 series
Definition: Processes which include physically subdividing units of
No. of patents: 23
Last issue date: 04/01/2008

Number	Title	Issue Date
7351422	Hemostatic soluble cellulose fibers containing coagulating protein for treating wound and process for producing the same Proposed is a novel soluble trauma-healing and hemostatic cellulose fiber capable of absorbing and readily dissolving hemorrhaging trauma loci when applied thereto and of promoting the hemostatic action of blood platelets and fibrin and cell adhesion to the trauma s...	04/01/2008
7022837	Cellulose ethers and method of preparing the same The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cell...	04/04/2006
6943247	Building material compositions Described is a building material composition prepared from or having added thereto a particulate material selected from particulate polysaccharides or particulate polysaccharide derivatives. The particulate material of the building material composition is prepared b...	09/13/2005
6914139	Solution of cellulose acylate dissolved in mixed solvent of ketone and ester In a cellulose acylate solution, cellulose acylate is dissolved in an essentially non-chlorinated solvent. The essentially non-chlorinated solvent is a mixture of a ketone having a solubility parameter of 19 to 21 and an ester having a solubility parameter of 19 to ...	07/05/2005
6849729	Low-substituted cellulose ether powder and production process thereof Provided is a cellulose polymer having a water retention property, and good feeling upon use when applied to the skin and being suitably used as a carrier. More specifically, provided is a low-substituted cellulose ether powder comprising primary particles wherein a...	02/01/2005
6294008	Haze-free cellulose ether capsules and process for making Disclosed is a cellulose ether composition having a low molecular weight cellulose ether of a viscosity of about 200 centipoise or less in a two percent aqueous solution at 20° C. The composition has a sodium chloride content of about 0.3 weight percent ...	09/25/2001
6235893	Process for making cellulose ether having enhanced gel strength According to the present invention, there is a methylcellulose having a methoxy substitution of about 21 to about 42 percent based upon the weight of the cellulose ether and elastic modulus (EM) of EMࣙ181.3×(v0.2711) wherein "v" is viscosity...	05/22/2001
5589589	Process for screening cellulose ethers A process and apparatus for screening cellulose ethers which have a finely fibrous or wad-like or woolly structure, wherein the process comprises the following steps: a) applying the cellulose ether (material to be screened) to a sieve surface, b) dividin...	12/31/1996
5488104	Process for comminuting cellulose ethers This invention is a process for comminuting a cellulose ether which comprises extruding a hydrated cellulose ether through a plurality of orifices, each orifice having a cross-sectional area of from about 7.5×10-9 m2 to about 1×10	01/30/1996
5463036	Carboxymethylcellulose and its use in textile printing The present invention relates to carboxymethylcellulose (CMC) having a lower degree of substitution and to its use in textile printing....	10/31/1995
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
4820813	Grinding process for high viscosity cellulose ethers High viscosity cellulose ether products are produced by grinding a substantially dry high molecular weight cellulose ether under conditions of mild mechanical impact such as those encountered in a high speed air swept impact mill. It has been found that s...	04/11/1989
4689408	Method of preparing salts of carboxymethylcellulose Disclosed are novel sodium salt of carboxymethylcellulose (CMC) which are substantially nonfibrous, have a degree of substitution (D.S.) of 0.2 to 0.9 and an absorbency of at least 25 g. liquid/g. the novel CMC material, and are prepared from a cellulose ...	08/25/1987
4507473	Process for the continuous granulation of carboxymethyl cellulose A continuous process for the granulation of alcohol- and water-moist carboxymethyl cellulose (CM) produced by standard methods, wherein the CMC still moist with adhering aqueous alcohol is continuously introduced into a stirring unit, of which the length-...	03/26/1985
4439333	Heavy brine viscosifiers Polymeric compositions for, and methods of, increasing the viscosity of aqueous brine well servicing fluids comprising adding to the brine a composition containing hydroxyethyl cellulose, a solid organic activating agent for the hydroxyethyl cellulose, an...	03/27/1984
4415124	Method for the production of micropowders from cellulose ethers or cellulose A method for the production of micropowders from cellulose ethers or cellulose comprising (a) subjecting a cellulose ether or a cellulose having a fine-fiber, cottony or woolly structure to a consolidation or embrittlement sufficient whereby in one mill p...	11/15/1983
4329451	Preparing an aqueous dispersion of colloidal size particles of a water-insoluble polysaccharide derivative An aqueous dispersion of colloidal size particles of a water-insoluble, polysaccharide derivative such as ethylcellulose is prepared by grinding the water-insoluble, polysaccharide derivative in the presence of water. A suspending agent is optionally empl...	05/11/1982
4254258	Process for the preparation of cellulose ether derivatives There is disclosed an improved process for preparing cellulose ether derivatives which in pertinent part accomplishes this by providing for the uniform distribution of caustic and etherifying reagents over the exposed area of fiberized, never-dried, non-p...	03/03/1981
4158634	Particles of thermoplastic polymer, and process of making the same Finely comminuted particles of a normally solid thermoplastic organic polymer, which is particularly useful as a toner base for electrostatic reproduction utilizing pressure fusing on the toner, is prepared by dissolving a polymer in a normally solid firs...	06/19/1979
4076935	Grinding method for cellulose A method of reducing the particle size of cellulose compounds selected from the group consisting of cellulose and ether derivatives thereof which comprises grinding said compounds in a vibration mill in the presence of air and in the presence of sufficien...	02/28/1978
4044198	Method for cold-milling cellulose derivatives This invention relates to an improvement in the method for the cold-milling of a cellulose derivative, in which the cellulose derivative is cooled by means of liquid nitrogen until it becomes brittle and the thus cooled cellulose derivative is milled in a...	08/23/1977

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Class 536/86 - Comminuting