Class 430/137.16 - Chemical after treating of polymer

Subclass of Class 430 - Radiation imagery chemistry: process, composition, or product thereof
Definition: Process wherein the polymer is chemically treated subsequent
No. of patents: 38
Last issue date: 05/10/2011

Number	Title	Issue Date
7939238	Dry toner and method of preparing same A dry toner for developing an electrostatic image, including a toner binder containing a urea-modified polyester. The toner has an average sphericity of 0.96 or more and contains no more than 30% by weight of particles having a sphericity of less than 0.95. ...	05/10/2011
7749674	Toner, developer, image developer and image forming apparatus A toner including toner particles including a binder resin, a colorant, and an inorganic particulate material present on a surface of the toner particles. The toner particles have a surface roughness (Ra) of from 1 to 30 nm, a standard deviation of the surface rough...	07/06/2010
7405027	Liquid toners comprising toner particles prepared in a solvent other than the carrier liquid Methods of preparing a liquid electrographic toner composition are provided, wherein a polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions is first prepared in a hydrocarbon re...	07/29/2008
7365150	Process for producing polyester resin for toner A polyester resin for toner which is obtained through polymerization in the presence of a release agent ingredient with a melting point of 60–100° C. or a release agent ingredient comprising an alcohol component, and which has a softening temperature of 100–160...	04/29/2008
7354972	Amphipathic polymer particles and methods of manufacturing the same The invention is directed to amphipathic polymeric particles that serve as both the dispersant and the binder in water based inks, ink compositions containing these particles, and methods for making the particles. The polymeric particles contain both hydrophilic and...	04/08/2008
7294443	Toner composition and method for manufacturing the toner composition A toner composition including toner particles including a binder resin; and a colorant, and a charge controlling agent which is at least located on a surface of the toner particles, wherein the toner composition has a spherical degree of from 0.96 to 0.99, and where...	11/13/2007
7285367	Method of manufacturing a toner A method of manufacturing a toner for developing static charges in an aqueous system is provided which includes preparation step for a resin kneaded product, preparation step for the aqueous dispersion of a less water-soluble alkaline earth metal salt, preparation s...	10/23/2007
7220528	Amphipathic polymer particles and methods of manufacturing the same The invention is directed to amphipathic polymeric particles that serve as both the dispersant and the binder in water based inks, ink compositions containing these particles, and methods for making the particles. The polymeric particles contain both hydrophilic and...	05/22/2007
7214463	Toner processes A toner process comprised of a first heating of a mixture of an acicular magnetite dispersion, a colorant dispersion, a wax dispersion, and a core latex comprised of a first latex containing a vinyl crystalline polyester resin substantially free of crosslinking, and...	05/08/2007
7141347	Process for manufacturing a toner A toner manufacturing process capable of providing a toner with uniform charge amounts. A mixture of a synthetic resin having an acidic leaving group and a coloring agent as essential components is emulsified in an aqueous solution to produce synthetic resin particl...	11/28/2006
7078144	Method for manufacturing toner The present invention relates to a method for manufacturing a toner with adjusted particle size distribution having a step of preparing colored particles that contain a binder resin and a colorant, and a step of classifying the colored particles. In the classificati...	07/18/2006
6991886	Closed air circulation toner rounding Toner is rounded by vigorously mixing less than about 5 percent by weight of particulate silica to the total weight of a starting toner in a closed, recirculating air system. The starting toner contains at least about 4.5 percent by weight of the starting toner of a...	01/31/2006
6432605	Method of producing toner by way of dispersion polymerization for use in developing latent electrostatic images A process for preparing a dispersion polymerized color toner for developing latent electrostatic images includes polymerization of a macromer in a liquid organic medium in which the macromer or the resulting polymer resin is not soluble. The liquid organi...	08/13/2002
6395442	Toner and production method of the same A toner for electrophotography is disclosed. The resin binder is obtained by fusing fine resin particles comprising a crystalline material and amorphous polymer in a water-based medium. The crystalline material preferably has a melting point of 60 to 130�...	05/28/2002
6387583	Method of producing toner for developing latent electrostatic images by way of dispersion dyeing A process for preparing a dispersion dyed color toner for developing latent electrostatic images includes dyeing a particulate polymer resin in organic medium in which the resin is not soluble. The resin is a functionalized resin having sites suitable for...	05/14/2002
6355392	Method of producing toner by way of dispersion polymerization for use in developing latent electrostatic images A process for preparing a dispersion polymerized color toner for developing latent electrostatic images includes polymerization of a macromer in a liquid organic medium in which the macromer or the resulting polymer resin is not soluble. The liquid organi...	03/12/2002
6352810	Toner coagulant processes A process for the preparation of toner comprising mixing a colorant, a latex, and a polyamine followed by aggregation and coalescence, and wherein said process is accomplished in the presence of an oxidizing agent....	03/05/2002
6054244	Process for producing toner A process for producing a toner comprises the steps of: adjusting to 4.0 to 6.0 the pH of an aqueous medium containing a calcium phosphates obtained by mixing an aqueous phosphate solution with an aqueous calcium salt solution; dispersing in the aqueous m...	04/25/2000
6017670	Electrophotographic toner and process for the preparation thereof An electrophotographic toner having a volume-average particle diameter of from 3 to 15 μm. The toner comprises a spherical particulate material having an average circularity of not less than 0.97 having a colorant encapsulated in a binder resin. The bind...	01/25/2000
5800957	Toner for electrostatic latent image development and process for producing the same A toner for electrostatic latent image development composed of a core substance containing a colorant and a binder resin and an outer shell, in which the colorant in the core substance is treated with an amino-containing coupling agent and a rosin derivat...	09/01/1998
5716746	Magnetic toner and process for producing magnetic toner A magnetic toner which is excellent in the low temperature fixability and the anti-offset properties is disclosed. The binder resin of the toner comprises a non-crosslinked styrene polymer, a non-crosslinked styrene copolymer or a mixture of these, and a ...	02/10/1998
5639582	Electrophotographic toner composition and process for the preparation thereof An electrophotographic toner composition which can fix an electrostatic latent image without causing offset in the presence of a small amount of a fuser oil or in the absence of fuser oil in the heat roll fixing process. In a first embodiment, the electro...	06/17/1997
5609979	Spheroidal particles useful for electrostatography A method of production of microparticles of a thermoplastic polymer suitable as a toner for electrostatographic processes comprising the steps of melting the material in a continuous non-solvent phase having a boiling point higher than the melting point o...	03/11/1997
5427883	Toner composition for electrophotography The present invention provides a toner composition mainly comprising a binder resin (D) which contains at least 20% by weight of an urethane-modified polyester resin (C) obtained by reacting a polyester resin (A) with an isocyanate compound (B) and whose ...	06/27/1995
5340678	Dry tower for developing electrostatic image, process for producing same, and image formation method using same A dry toner for developing an electrostatic latent image comprising toner particles and fine particles of a lubricant coated with an inorganic compound fine powder and an image formation method using the same. The toner is excellent in fluidity, cleaning ...	08/23/1994
5316882	Ferrite green beads and method of producing carrier particles A green bead composite for the manufacture of magnetic carrier particles for electrophotography is disclosed. The composite comprises a synthetic polyester or polyurethane as the binder for metal oxide and other metal salt particles. The dried, nonmagneti...	05/31/1994
5272212	Colored spherical fine particles, process for production thereof and applications thereof The present invention provides colored spherical fine particles comprising fine particles and a coloring agent uniformly dispersed therein. The colored spherical fine particles of the present invention can be produced by reaction an unsaturated polymer with an...	12/21/1993
5238768	Toner compositions with sulfone charge enhancing additives A negatively charged toner composition comprised of resin particles, colorants, optional surface additives, and a dihydroxyaryl sulfone charge enhancing additive, or an unsymmetrical hydroxyaryl sulfone charge enhancing additive obtained from the condensa...	08/24/1993
5215847	Process for obtaining improved dispersion of components in toner particles Toner with well-dispersed component subparticles is prepared by a method wherein an attritor is initially used to disperse the subparticles in a core monomer, and attrition is continued during initial polymerization of the monomer. Interfacial polymerizat...	06/01/1993
5202211	Toner powder comprising particles having a coating of fluorine-doped tin oxide particles A toner powder comprising toner particles which carry on their surface and/or in an edge zone close to the surface fine particles of electrically conductive material consisting of fluorine-doped tin oxide. The fluorine-doped tin oxide particles have a pri...	04/13/1993
5096797	Method for improving performance of barium and strontium ferrite carrier particles with acid wash In the electrographic developer compositions, the performance of strontium ferrite or barium ferrite carrier particles is improved by treating the carrier particles with an aqueous acid solution. This treatment reduces the tendency toward early life dusti...	03/17/1992
5053305	Composition and method for developing electrostatic latent images A composition for developing electrostatic latent images in electrographic printing or copying machinery is provided in which a toner component is blended with 10 to 40% by weight of a carrier. The toner component includes magnetic toner particles each ha...	10/01/1991
5009979	Electrostatographic particulate toner and developer compositions A toner composition comprised of resin particles, colorant material and an effect change controlling amount of at least one charge enhancing additive of the formula: ##STR1## wherein R1 and R2 are lower alkyl groups having 1 to ...	04/23/1991
4996127	Toner for developing an electrostatically charged image This invention provides a toner composed of associated particles of secondary particles comprising primary particles of a polymer having an acidic or basic polar group and particles of a coloring agent and optionally a charge controlling agent and a proce...	02/26/1991
4994340	Magnetic toner A magnetic toner comprising at least a binder resin, a magnetic powder and polyolefine is disclosed. The magnetic toner comprises a Wadel's globularity ranging from 0.4 to 0.8, and polyolefine comprises a content ranging from 10 to 40 weight % on a surfac...	02/19/1991
4828954	Toner composition with treated inorganic powder A toner composition is disclosed, which contains an inorganic powder having been subjected to surface treatment with a compound having an onium salt structure, containing no polymerizable unsaturated bond, and having a functional group capable of bonding ...	05/09/1989
4737435	Method of modifying the charging propensity of carrier particles for electrostatographic developers The invention provides a method of modifying the triboelectric charging propensity of carrier particles coated with a fluorohydrocarbon polymer or copolymer. The method comprises dehydrofluorinating the polymer or copolymer by contacting the coated partic...	04/12/1988
4264697	Imaging system An electrostatographic developer mixture comprising finely-divided positively charging toner particles electrostatically clinging to negatively charging carrier particles. The toner particles comprise a resin, a colorant, and a charge inducing material se...	04/28/1981

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Class 430/137.16 - Chemical after treating of polymer