Patent application number | Description | Published |
20130089671 | POLYMERS FORMED FROM 2,3,3,3-TETRAFLUOROPROPENE AND ARTICLES AND USES THEREOF - The present invention generally relates to a novel polymeric material formed, at least in part, from monomeric material comprising 2,3,3,3-tetrafluoropropene (CF | 04-11-2013 |
20130090439 | Polymerization Of 2,3,3,3-Tetrafluoropropene And Polymers Formed From 2,3,3,3-Tetrafluoropropene - The present invention relates to methods of producing polymerized 2,3,3,3-tetrafluoropropene (poly-1234yf) using one or a combination of the techniques provided herein. In certain embodiments, such techniques include (1) emulsion polymerization; (2) suspension polymerization; (3) solution polymerization; (4) supercritical carbon dioxide polymerization; (5) transition metal catalyzed polymerization; (6) radiation or thermal polymerization; and combinations thereof. A wide array of initiators, catalysts, and solvents may be used in such polymerization processes and may include, but are not limited to, (1) radical initiators; (2) ionic initiators; and (3) single-site and multiple-site catalysts. | 04-11-2013 |
20140044764 | USE OF 2,3,3,3-TETRAFLUOROPROPENE/VINYLIDENE FLUORIDE COPOLYMERS TO PREVENT BIOFOULING - A copolymer comprising 2,3,3,3-tetrafluoropropene and vinylidene fluoride and having a surface energy of between about 20 and about 30 mJ/m | 02-13-2014 |
20140051818 | SYNTHESIS OF HIGH MOLECULAR WEIGHT POLY(2,3,3,3-TETRAFLUOROPROPENE) - A process of synthesizing poly(2,3,3,3-tetrafluoropropene), comprising reacting 2,3,3,3-tetrafluoropropene monomers in a reaction medium in the presence of an initiator, wherein the initiator is added to the reaction medium in multiple portions at different times during the process. | 02-20-2014 |
20140138314 | FLUORINATED ETHYLENE-PROPYLENE POLYMERIC MEMBRANES FOR GAS SEPARATIONS - A fluorinated ethylene-propylene polymeric membrane comprising a copolymer comprising 2,3,3,3-tetrafluoropropene and vinylidene fluoride is disclosed. The fluorinated ethylene-propylene polymeric membranes of the invention are especially useful in gas separation processes in air purification, petrochemical, refinery, and natural gas industries. | 05-22-2014 |
20140138317 | BLEND POLYMERIC MEMBRANES CONTAINING FLUORINATED ETHYLENE-PROPYLENE POLYMERS FOR GAS SEPARATIONS - The present invention generally relates to gas separation membranes and, in particular, to high selectivity fluorinated ethylene-propylene polymer-comprising polymeric blend membranes for gas separations. The polymeric blend membrane comprises a fluorinated ethylene-propylene polymer and a second polymer different from the fluorinated ethylene-propylene polymer. The fluorinated ethylene-propylene polymers in the current invention are copolymers comprising 10 to 99 mol % 2,3,3,3-tetrafluoropropene-based structural units and 1 to 90 mol % vinylidene fluoride-based structural units. The second polymer different from the fluorinated ethylene-propylene polymer is selected from a low cost, easily processable glassy polymer. | 05-22-2014 |
20140142264 | USE OF 2,3,3,3-TETRAFLUOROPROPENE/VINYLIDENE FLUORIDE COPOLYMERS TO PREVENT BIOFOULING - A copolymer comprising 2,3,3,3-tetrafluoropropene and vinylidene fluoride and having a surface energy of between about 20 and about 30 mJ/m | 05-22-2014 |
20140147480 | SYNTHESIS AND USE OF TRANS-1,3,3,3-TETRAFLUOROPROPENE/VINYLIDENE FLUORIDE COPOLYMERS - A copolymer comprising trans-1,3,3,3-tetrafluoropropene units and vinylidene fluoride units, and methods of making the same. A method of preventing biofouling on an article of manufacture, comprising applying such copolymer to the article of manufacture. A process of preparing a surface having a surface energy of between about 20 and about 30 mJ/m | 05-29-2014 |
20140150646 | BLEND POLYMERIC MEMBRANES CONTAINING FLUORINATED ETHYLENE-PROPYLENE POLYMERS FOR GAS SEPARATIONS - The present invention generally relates to gas separation membranes and, in particular, to high selectivity fluorinated ethylene-propylene polymer-comprising polymeric blend membranes for gas separations. The polymeric blend membrane comprises a fluorinated ethylene-propylene polymer and a second polymer different from the fluorinated ethylene-propylene polymer. The fluorinated ethylene-propylene polymers in the current invention are copolymers comprising 10 to 99 mol % 2,3,3,3-tetrafluoropropene-based structural units and 1 to 90 mol % vinylidene fluoride-based structural units. The second polymer different from the fluorinated ethylene-propylene polymer is selected from a low cost, easily processable glassy polymer. | 06-05-2014 |
20140150648 | FLUORINATED ETHYLENE-PROPYLENE POLYMERIC MEMBRANES FOR GAS SEPARATIONS - A fluorinated ethylene-propylene polymeric membrane comprising a copolymer comprising 2,3,3,3-tetrafluoropropene and vinylidene fluoride is disclosed. The fluorinated ethylene-propylene polymeric membranes of the invention are especially useful in gas separation processes in air purification, petrochemical, refinery, and natural gas industries. | 06-05-2014 |
20140179887 | SYNTHESIS OF 2,3,3,3-TETRAFLUOROPROPENE/VINYLIDENE FLUORIDE COPOLYMERS - In accordance with the present invention, aqueous emulsion polymerization processes of synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit are provided. | 06-26-2014 |
20140339167 | 1234YF- AND 1234ZE-BASED POLYMERIC MEMBRANE MATERIALS, MEMBRANE PREPARATIONS AND USES THEREOF - The present invention generally relates to polymeric membrane materials formed, at least in part, from monomeric material selected from 2,3,3,3-tetrafluoropropene (CF | 11-20-2014 |