Decreasing Molecular Weight Of Polymer Of Indeterminate Structure Patents (Class 570/152)
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Patent number: 11884607Abstract: The present disclosure provides a process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and at least one trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, reacting the reactant stream in the presence of a first catalyst at a first reaction temperature from about 25° C. to about 400° C. to produce an intermediate product stream comprising trifluoroacetyl iodide, and reacting the intermediate product stream in the presence of a second catalyst at a second reaction temperature from about 200° C. to about 600° C. to produce a final product stream comprising the trifluoroiodomethane.Type: GrantFiled: August 17, 2022Date of Patent: January 30, 2024Assignee: Honeywell International Inc.Inventors: Haridasan K. Nair, Glenn Matthies, Rajiv Ratna Singh, Terris Yang, Haiyou Wang, Ryan J. Hulse, Rajiv Banavali
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Patent number: 11555136Abstract: The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCl), and a method of forming an azeotrope or azeotrope-like composition comprising the step of combining trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I) to form an azeotrope or azeotrope-like composition.Type: GrantFiled: November 19, 2021Date of Patent: January 17, 2023Assignee: Honeywell International Inc.Inventors: Hang T. Pham, Ryan J. Hulse, Rajiv Ratna Singh, Haridasan K. Nair
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Patent number: 10752565Abstract: The present disclosure provides a gas-phase process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, and reacting the reactant stream in the presence of a catalyst at a temperature from about 200° C. to about 600° C. to produce a product stream comprising the trifluoroiodomethane.Type: GrantFiled: August 23, 2019Date of Patent: August 25, 2020Assignee: Honeywell International Inc.Inventors: Haridasan K. Nair, Rajiv Banavali, Rajiv Ratna Singh
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Patent number: 8212091Abstract: A process for depolymerizing fluoropolymers includes continuously feeding a solid fluoropolymer, in particulate form, into a horizontal cylindrical first reaction zone. The fluoropolymer particles enter the first reaction zone at one end. Within the first reaction zone, a central axle from which protrudes at least one paddle, continuously rotates. The rotating paddle serves to advance the fluoropolymer particles along the reaction zone while agitating them. As the fluoropolymer particles pass along the reaction zone, they are subjected to an elevated temperature, thereby depolymerizing the fluoropolymer into a fluoro-containing compound-rich gas phase. A residual solids phase is withdrawn at the other end of the first reaction zone, as is the gas phase. Optionally, the gas phase is passed through a second reaction zone which is also at an elevated temperature. The gas phase is quenched, thereby to recover the fluoro-containing compounds as gaseous products.Type: GrantFiled: November 24, 2006Date of Patent: July 3, 2012Assignee: The South African Nuclear Energy Corporation LimitedInventors: Izak Jacobus Van Der Walt, Alfred Teo Grunenberg, Johannes Theodorus Nel
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Publication number: 20090149679Abstract: A process for depolymerizing fluoropolymers includes continuously feeding a solid fluoropolymer, in particulate form, into a horizontal cylindrical first reaction zone. The fluoropolymer particles enter the first reaction zone at one end. Within the first reaction zone, a central axle from which protrudes at least one paddle, continuously rotates. The rotating paddle serves to advance the fluoropolymer particles along the reaction zone while agitating them. As the fluoropolymer particles pass along the reaction zone, they are subjected to an elevated temperature, thereby depolymerizing the fluoropolymer into a fluoro-containing compound-rich gas phase. A residual solids phase is withdrawn at the other end of the first reaction zone, as is the gas phase. Optionally, the gas phase is passed through a second reaction zone which is also at an elevated temperature. The gas phase is quenched, thereby to recover the fluoro-containing compounds as gaseous products.Type: ApplicationFiled: November 24, 2006Publication date: June 11, 2009Inventors: Izak Jacobus Van Der Walt, Alfred Teo Grunenberg, Johannes Theodorus Nel
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Publication number: 20040204618Abstract: 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.Type: ApplicationFiled: April 28, 2004Publication date: October 14, 2004Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Takashi Okazoe, Kunio Watanabe, Shin Tatematsu, Masahiro Ito, Daisuke Shirakawa, Masao Iwaya, Hidekazu Okamoto
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Patent number: 6534687Abstract: Shaped soap product comprising talc, one or more fatty acids having 12-22 carbon atoms in the form of their alkali soaps and one or more cationic surfactants with the simultaneous absence of alkyl (oligo)glycosides.Type: GrantFiled: July 9, 2001Date of Patent: March 18, 2003Assignee: Beiersdorf AGInventors: Michael Schultz, Jens Treu
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Patent number: 6251843Abstract: A detergent composition which is suitable for making into bars for personal washing comprises: (a) 10 to 60% wt. of a synthetic, non-soap detergent; (b) 20 to 60% wt. of water soluble material which is neither soap nor a non-soap detergent and which has a melting point in the range 40° C. to 100° C.; and (c) 5 to 50% wt. of water insoluble material which is neither soap nor a non-soap detergent and which has a melting point in the range 40° C. to 100° C. The content of water, if any does not exceed 20% wt. of the composition and better is less than 15% wt. The materials (b) and (c) serve to give structure to the bars. The compositions can be prepared by melting together the above mentioned components at a temperature of 50-100° C., without the conventional energetic working. Desirably the molten mixture contains less than 20% wt. material, other than synthetic, non-soap detergent, which does not enter the liquid phase.Type: GrantFiled: September 28, 1999Date of Patent: June 26, 2001Assignee: Unilever Home & Personal Care USA, division of Conopco, Inc.Inventors: John George Chambers, Bryan Stuart Joy, Melissa Iva Katz, John Gerrard Sheehan
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Patent number: 6174928Abstract: A fluorinated oligomer having COOH groups at both end and a &rgr;50° value of 1,000 to 10,000 is produced by swelling a fluorine rubber crosslinking product in an organic solvent, followed by decomposition in the presence of a base and a peroxide. The obtained fluorinated oligomer is soluble in solvent and thus easy to separate from fillers, etc., and can be effectively used as a chain-elongating agent for epoxy resin, isocyanate resin, oxazoline resin, etc.Type: GrantFiled: March 26, 1999Date of Patent: January 16, 2001Assignee: Nippon Mektron, LimitedInventors: Fumiyo Mizuide, Haruyoshi Tatsu, Sergey Vasilievich Sokolov, Michail Vasiliyevich Zhuravlev, Igor Vladimirovich Kokotin, Olga Viktorinovna Blagodatova
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Patent number: 5432259Abstract: The pyrolysis of fluorine polymers leads to a high yield of pure fluorinated monomers if the finely divided polymer is introduced, with steam, into a fluidized bed reactor which contains an inert, granular material as the fluidized material, the steam functioning as the fluidizing gas.Type: GrantFiled: October 4, 1994Date of Patent: July 11, 1995Assignee: Hoechst AktiengesellschaftInventors: Thomas Schottle, Klaus Hintzer, Hans J. Staudt, Herbert Weber