Abstract: A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.

Abstract: The present invention relates to a method for the polymerization of fluoromonomers using non-fluorinated alkyl phosphonate surfactants, and to the fluoropolymers formed thereby. Specifically, the method of the polymerization uses one or more alkyl phosphonic acids or salts thereof.

Abstract: A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.

Abstract: The invention relates to aqueous fluoropolymer hybrid compositions made by a seeded emulsion polymerization process, having improved film formation properties. The seed is a fluoropolymer dispersion. At least two different monomer compositions are added sequentially to the seeded dispersion. These monomer compositions preferably include acrylic monomers. The first monomer composition is selected for miscibility with the fluoropolymer dispersion. The second monomer composition is selected to have a glass transition temperature (Tg) of less than 30° C. The final composition can be formulated to make coatings with a minimum film forming temperature (MFFT) of less than 5° C., and a maximum VOC of 50 g/liter. The composition is especially useful for coatings and films.

Abstract: The invention relates to a copolymer composition of poly(vinylidene fluoride-trifluoropropene) copolymers. The copolymers formed have excellent optical properties, with very low haze, as well as high melting points, excellent flexibility and toughness.

Abstract: This invention relates to copolymer compositions of poly(vinylidene fluoride-2,3,3,3-tetrafluoropropene) copolymers. The copolymers formed have excellent optical properties, corrosion resistance and electrical properties, with very low haze. Tetrafluoropropene monomer units may be present at from 0.5 to 60 weight percent of the copolymer.

Abstract: The present invention relates to the preparation of a fluoropolymer exhibiting improved whiteness upon fabrication. The fluoropolymer is a multiphase copolymer or blend of fluropolymers. Fluoropolymer compositions of this invention could have application in both melt processing and solvent casting operations for such products as pipes, tubes, sheets, rods, solvent-casted and melt-processed films.

Abstract: The present invention relates to a method for the polymerization in an aqueous medium of monomers, and especially of fluoromonomers, using non-fluorinated surfactants; and the fluoropolymers formed therefrom. Specifically, the method of the polymerization uses one or more non-fluorinated surfactants selected from the group consisting of polyvinylphosphonic acid, polyacrylic acids, polyvinyl sulfonic acid, and salts thereof. Additionally, the use of polyvinylphosphonic acid, polyacrylic acids, polyvinyl sulfonic acid as surfactants in aqueous free radical polymerization is also novel.

Abstract: The present invention relates to the preparation of a fluoropolymer exhibiting improved whiteness upon fabrication. The fluoropolymer is a multiphase copolymer or blend of fluropolymers. Fluoropolymer compositions of this invention could have application in both melt processing and solvent casting operations for such products as pipes, tubes, sheets, rods, solvent-casted and melt-processed films.

Abstract: A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.

Abstract: The present invention relates to a method for the polymerization of fluoromonomers using non-fluorinated alkyl phosphonate surfactants, and to the fluoropolymers formed thereby. Specifically, the method of the polymerization uses one or more alkyl phosphonic acids or salts thereof.

Abstract: Nonfluorinated surfactants selected from C7–C20 linear 1-alkanesulfonates, 2-alkanesulfones, and 1,2-alkanedisulfones are particularly effective for stabilizing emulsions in preparing non-elastomeric fluoropolymers containing at least 71 wt % vinylidene fluoride and having at least a 2% crystalline polyvinylidene fluoride content. Processes for making such fluoropolymers using these surfactants, particularly in combination with one or both of a nonionic polymerization initiator and the use of mechanical coagulation to isolate the product, are also provided, as are fluoropolymers made thereby.

Abstract: Nonfluorinated surfactants selected from C7-C20 linear 1-alkanesulfonates,-2-sulfonates, and-1,2-disulfonates are particularly effective for stabilizing emulsions in preparing non-elastomeric fluoropolymers containing at least 71 wt % vinylidene fluoride and having at least a 2% crystalline polyvinylidene fluoride content. Processes for making such fluoropolymers using these surfactants, particularly in combination with one or both of a nonionic polymerization initiator and the use of mechanical coagulation to isolate the product, are also provided, as are fluoropolymers made thereby.

Abstract: Fluoropolymers are prepared by a process comprising polymerizing at least one fluoromonomer in an aqueous reaction medium containing monomer, a radical initiator and a 3-allyloxy-2-hydroxy-1-propanesulfonic acid salt as surfactant. The medium may optionally contain one or more of an antifoulant, a buffering agent and a chain-transfer agent.

Abstract: Halogenated polymers are prepared by a process comprising polymerizing at least one halogen-containing monomer in an aqueous medium containing monomer, radical initiator, and siloxane surfactant. The medium may optionally contain one or more of an antifoulant, a buffering agent and a chain-transfer agent.

Abstract: Fluoropolymers are prepared by a process comprising polymerizing at least one fluoromonomer in an aqueous reaction medium containing monomer, a radical initiator and a 3-allyloxy-2-hydroxy-1-propanesulfonic acid salt as surfactant. The medium may optionally contain one or more of an antifoulant, a buffering agent and a chain-transfer agent.

Abstract: Halogenated polymers are prepared by a process comprising polymerizing at least one halogen-containing monomer in an aqueous medium containing monomer, radical initiator, and siloxane surfactant. The medium may optionally contain one or more of an antifoulant, a buffering agent and a chain-transfer agent.

Abstract: Vinylidene fluoride polymers are produced by using ethane as a chain transfer agent in the emulsion polymerization process. Vinylidene fluoride homopolymers made by the process have a significantly reduced tendency to generate cavities at high temperatures and a greater resistance to discoloration at high temperatures.

Abstract: New and novel copolymers of vinylidene fluoride and hexafluoropropylene having lower or no crystallinity together with processes for their manufacture and use are disclosed.

Abstract: Vinylidene fluoride polymers are produced by using ethane as a chain transfer agent in the emulsion polymerization process. Vinylidene fluoride homopolymers made by the process have a significantly reduced tendency to generate cavities at high temperatures and a greater resistance to discoloration at high temperatures.