摘要:
The present invention relates to a method for the polymerization of fluoromonomers using non-fluorinated polycaprolactone, and to the fluoropolymers formed thereby. Specifically, the method of the polymerization uses one or more polycaprolactone, or salts thereof.
摘要:
The invention relates to an aqueous-based fluoropolymer coating that is especially useful for use over flat or low-slope flexible surfaces, and more specifically for flat or low-slope roofing. The coating can be factory or field applied. The coating offers the advantages of improved durability, lower dirt pick-up, stain resistance, water repellency, increased solar reflectivity duration, and mildew resistance.
摘要:
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.
摘要:
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.
摘要:
A fluoropolymer latex is obtained by emulsion polymerization of one or more fluoromonomers in the presence of one or more acid-functionalized monomers such as vinyl sulfonic acid or a salt thereof. A fluorosurfactant need not be present.
摘要:
A process is disclosed for reducing the content of polycyclic aromatic hydrocarbons or PAHs in aromatic extracts including oxidizing the PAHs in the presence of a hemoprotein via an oxidizing compound, wherein the aromatic extract is brought into contact with the oxidizing agent in a non-reactive organic solvent, then is brought into contact with the immobilized or supported hemoprotein.
摘要:
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.
摘要:
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.
摘要:
Acrylic Modified Fluoropolymers based on vinylidene fluoride polymers are disclosed wherein the acrylic phase is capable of entering into crosslinking reactions. The final cured products provide superior solvent extractability resistance to the fluoropolymer phase.
摘要:
The invention relates to the preparation of branched fluoropolymers having long chain branches and little or no gels, by a process involving polymerization at high temperatures using persulfates and optionally multifunctional initiators. The invention also relates to gel-free, branched polymers with strain hardening produced by the process.