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| Number | Title | Issue Date |
| 7247759 | Fluorination reactor Fluorination reactions in which an organic compound to be fluorinated is contacted with elemental fluorine and HF is produced as a byproduct are disclosed, wherein the elemental fluorine is contacted with the organic compound in the presence of a fluoride-adsorbing ... | 07/24/2007 |
| 7230140 | Perfluoropolyether derivative A novel perfluoropolyether derivative which is less likely to undergo decomposition, which is free from a problem of deterioration during its use, and which is useful as a lubricating oil or a coating agent, is provided. A compound represented by the followin... | 06/12/2007 |
| 7060756 | Polymer electrolyte with aromatic sulfone crosslinking A method is provided for obtaining crosslinked polymers having pendent sulfonic acid groups by crosslinking through the sulfonic acid groups or their precursors with aromatic crosslinkers or aromatic pendent crosslinking groups to form aromatic sulfones. Such crossl... | 06/13/2006 |
| 6972317 | Monohydric polyfluorooxetane polymer and radiation curable coatings containing a monofunctional polyfluorooxetane polymer Monofunctional polyfluorooxetane oligomers and polymers are prepared by the cationic polymerization of fluorooxetane monomers with a monoalcohol. The fluorooxetane oligomers or polymers can be copolymerized with generally cyclic ethers. Alternatively, the polyfluoro... | 12/06/2005 |
| 6969776 | Process for producing fluorinated ketone The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow... | 11/29/2005 |
| 6956138 | Method for producing a fluorine-containing compound The present invention provides a method for obtaining a compound useful as a raw material for various fluororesins in high yield by a short process by using a starting material which is inexpensive and readily available. ... | 10/18/2005 |
| 6590041 | Chlorinated vinyl chloride-based resin and molded articles The present invention provides a vinyl chloride resin having a high void ratio and micropores in the interior of particles thereof and allowing high level filling and distribution of various compounding additives a method of producing the same; a chlorina... | 07/08/2003 |
| 6462142 | Processes for improved surface properties incorporating compressive heating of reactive gases An apparatus and method are used to modify the surface chemistry of an article. The article to be surface treated has at least a surface region that includes at least one polymer. The method comprises the steps of placing one or more articles into a close... | 10/08/2002 |
| 6384149 | Process for production of chlorinated polyvinyl chloride resin A polyvinyl chloride resin having an average particle diameter of not less than 150 μm and porosity at 31-1,011 psi of not less than 0.15 cc/g is suspended in an aqueous medium and chlorinated by blowing gaseous chlorine into the aqueous suspension. In t... | 05/07/2002 |
| 6277922 | Disperant system for making polyvinyl chloride which produces low color chlorinated polyvinyl chloride Chlorinated polyvinyl chloride (CPVC) is prepared from polyvinyl chloride (PVC). When PVC is made utilizing polyvinyl alcohol, the low molecular weight CPVC compound so prepared is colored. A low molecular weight CPVC compound prepared from PVC that was m... | 08/21/2001 |
| 6242539 | Process for production of chlorinated polyvinyl chloride resin A polyvinyl chloride resin having an average particle diameter of not less than 150 μm and porosity at 31-1,011 psi of not less than 0.15 cc/g is suspended in an aqueous medium and chlorinated by blowing gaseous chlorine into the aqueous suspension. In t... | 06/05/2001 |
| 6197895 | Process for production of chlorinated polyvinyl chloride resin In producing chlorinated polyvinyl chloride resin having chlorination degree of 60-73% by weight, wherein polyvinyl chloride resin is suspended in an aqueous medium and chlorine gas is blown into said suspension under beam of a mercury lamp in the tempera... | 03/06/2001 |
| 6093775 | Polymers with pendant fluoroalkylsulfide groups Polymers having pendant fluoroalkylsulfide side chains and processes for their preparation by nucleophilic displacement of halides in preformed polymers using fluoroalkylthiols are disclosed which provide oil and water repellency and antisoil properties t... | 07/25/2000 |
| 6090895 | Crosslinked ion conductive membranes A method is provided for making crosslinked acidic polymers useful as ion conductive membranes, such as crosslinked sulfonated polyether ketones, sulfonated polysulfones, sulfonated polystyrenes, and other acidic polymers, by crosslinking with a species w... | 07/18/2000 |
| 5969053 | Higher modulus compositions incorporating particulate rubber A plastic article having a number of surfaces with at least one surface being modified by contacting that surface with a reactive gas atmosphere containing F2, Cl2, O2, Ozone, SO3, oxidative acids, or mixtures t... | 10/19/1999 |
| 5753776 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 05/19/1998 |
| 5674949 | Liquid-phase fluorination This invention pertains to a method for liquid-phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/07/1997 |
| 5571870 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 11/05/1996 |
| 5539059 | Perfluorinated polyethers This invention pertains to perfluoropolyethers and perhalogenated chlorofluoropolyethers that can be prepared by fluorinating addition polymers made by polymerizing epoxides.... | 07/23/1996 |
| 5461117 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/24/1995 |
| 5359011 | Process for the complete neutralization of chlorinated polyvinyl chloride and product resulting therefrom A novel process has been found in which effectively and completely neutralizes chlorinated polyvinyl chloride resin. The process comprises neutralizing the chlorinated polyvinyl chloride resin by a weak non-gassing base. The weak non-gassing base has a pK... | 10/25/1994 |
| 5340880 | Post-chlorinated suspension-polymerized poly(vinyl chloride) having at least 70 percent chlorine A novel chlorinated poly(vinyl chloride) ("CPVC") resin is prepared by a two-step process which uses an organic peroxide catalyst rather than a source of actinic light. The novel two-step "photoless" process yields a CPVC ("two-step CPVC") which, even at ... | 08/23/1994 |
| 5332790 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 07/26/1994 |
| 5322903 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5322904 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5216088 | Two-step process for post-chlorinating poly(vinyl chloride) A two-step process for the post-chlorination of PVC homopolymer and other predominantly vinyl chloride-containing polymers is disclosed, which process produces chlorinated PVC ("CPVC") containing at least 70% by weight Cl, in a fast, but controllable, aqu... | 06/01/1993 |
| 5093432 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 03/03/1992 |
| 5086122 | Crosslinked chlorinated polyvinyl chloride resin compositions Chlorinated polyvinyl chloride resins when crosslinked have improved melt strength in comparison with non-crosslinked chlorinated polyvinyl chloride resins. Moreover, the crosslinked chlorinated polyvinyl chloride resins have unexpected improved processin... | 02/04/1992 |
| 5006607 | Dispersant system for making polyvinyl chloride which produces low color chlorinated polyvinyl chloride Chlorinated polyvinyl chloride (CPVC) is prepared from polyvinyl chloride (PVC). When PVC is made utilizing polyvinyl alcohol, the low molecular weight CPVC compound so prepared is colored. A low molecular weight CPVC compound prepared from PVC that was m... | 04/09/1991 |
| 4983687 | Crosslinked chlorinated polyvinyl chloride resin compositions Chlorinated polyvinyl chloride resins when crosslinked have improved melt strength in comparison with non-crosslinked chlorinated polyvinyl chloride resins. Moreover, the crosslinked chlorinated polyvinyl chloride resins have unexpected improved processin... | 01/08/1991 |
| 4874823 | Chlorinated polyvinyl chloride-vinyl acetate copolymers having good low and high temperature stability A chlorinated copolymer made from vinyl chloride monomers and vinyl containing comonomers such as vinyl acetate has good low (e.g., about 120° C.) and high (e.g., about 170° C.) temperature stability as measured by hydrogen chloride elimination. The cop... | 10/17/1989 |
| 4650832 | Process for the manufacture of halogenated polymers In a process for the continuous halogenation of polymers by contacting polymer and halogenating agent in a continuous flow device in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture, ... | 03/17/1987 |
| 4554326 | Process for the manufacture of halogenated polymers In a process for the continuous halogenation of polymers by contacting polymer and halogenating agent in a continuous flow device in which the polymer and halogenating agent are subjected to deformation during reaction and in which means are provided for ... | 11/19/1985 |
| 4548995 | Process for the manufacture of halogenated polymers In a process for the continuous halogenation of polymers by contacting polymer and halogenating agent in a continuous flow device in which means are provided for disengaging reaction by-products and unreacted halogenating agent from the reaction mixture, ... | 10/22/1985 |
| 4544707 | Manganese-tertiary phosphine-polymer complexes The present invention relates to novel polymer compositions and the novel method of their synthesis. The novel polymer compositions are synthesized by forming a tetrahydrofuran solution of a polymer selected from the group consisting of polyvinylchloride,... | 10/01/1985 |
| 4536266 | Process for the fluorination of a surface layer of formed bodies made of plastics Method for the fluorination of a surface layer of articles molded from plastic, vulcanized rubber or other such macromolecular substances by the exposure of at least a part of the article's surface to a fluorine-yielding liquid in a controllable reaction,... | 08/20/1985 |
| 4459387 | Chlorination of poly(vinyl chloride) in liquid chlorine, and chlorinated poly(vinyl chloride) composition A process is disclosed for photochlorinating poly(vinyl chloride), ("PVC"), suspended in liquid chlorine ("Cl2 ") which swells the PVC and permits chlorination to occur in a gel phase. PVC starting material is in the form of solid free-flowing ... | 07/10/1984 |
| 4448658 | Use of high-intensity rapidly-pulsating actinic radiation in the chlorination of polyvinyl chloride resin The present invention pertains to the chlorination of polyvinyl chloride resin particles by exposing said particles of polyvinyl chloride particles while associated with chlorine to high-intensity pulsating actinic radiation.... | 05/15/1984 |
| 4412898 | Process for chlorination of PVC in water without use of swelling agents A process is disclosed which permits the photochlorination of poly(vinyl chloride) resin ("PVC"), in an aqueous medium without the use of swelling agents such as are conventionally used. The chlorination reaction proceeds in an aqueous suspension having a... | 11/01/1983 |
| 4386189 | Process for the post-chlorination of vinyl chloride polymers A simple and practical method for making post-chlorinated polymers based upon vinyl chloride is provided based upon conducting the chlorination reaction on a granular polymer suspended in aqueous hydrochloric acid in the presence of a stoichiometric exces... | 05/31/1983 |
