The invention relates to a fluoropolymer-acrylic coating composition that can be used, for example, in coating electrodes and/or separators in electrochemical devices. A coated separator for a lithium ion battery contains the porous separator substrate, and coatings on at least one side of the separator. The coating consists of an inorganic coating on at least one side of the separator, and an adhesive organic coating on at least one side of the inorganic coating or the separator. The organic coating contains an improved fluoropolymer-acrylic composition or a mixture of fluoropolymer and acrylic. The present invention can improve the adhesion of the coated separator to electrodes.

The invention relates to a fluoropolymer-acrylic coating composition that can be used, for example, in coating electrodes and/or separators in electrochemical devices. A coated separator for a lithium ion battery contains the porous separator substrate, and coatings on at least one side of the separator. The coating consists of an inorganic coating on at least one side of the separator, and an adhesive organic coating on at least one side of the inorganic coating or the separator. The organic coating contains an improved fluoropolymer-acrylic composition or a mixture of fluoropolymer and acrylic. The present invention can improve the adhesion of the coated separator to electrodes.

Method for preparing a ceramic-polymer nanocomposite is provided. The method includes providing a polymer comprising radicals on a surface thereof; contacting the polymer with a functionalizing agent to form a functionalized polymer; and either (i) grafting a cross-linking agent onto the functionalized polymer to form a graft copolymer, and attaching ceramic nanostructures to the graft copolymer to form a ceramic-polymer nanocomposite, or (ii) grafting a cross-linking agent onto ceramic nanostructures to form modified ceramic nanostructures, and attaching the modified ceramic nanostructures to the functionalized polymer to form a ceramic-polymer nanocomposite. A ceramic-polymer nanocomposite and use of the ceramic-polymer nanocomposite are also provided.

Method for preparing a ceramic-polymer nanocomposite is provided. The method includes providing a polymer comprising radicals on a surface thereof; contacting the polymer with a functionalizing agent to form a functionalized polymer; and either (i) grafting a cross-linking agent onto the functionalized polymer to form a graft copolymer, and attaching ceramic nanostructures to the graft copolymer to form a ceramic-polymer nanocomposite, or (ii) grafting a cross-linking agent onto ceramic nanostructures to form modified ceramic nanostructures, and attaching the modified ceramic nanostructures to the functionalized polymer to form a ceramic-polymer nanocomposite. A ceramic-polymer nanocomposite and use of the ceramic-polymer nanocomposite are also provided.

Method for preparing a ceramic-polymer nanocomposite is provided. The method includes providing a polymer comprising radicals on a surface thereof; contacting the polymer with a functionalizing agent to form a functionalized polymer; and either (i) grafting a cross-linking agent onto the functionalized polymer to form a graft copolymer, and attaching ceramic nanostructures to the graft copolymer to form a ceramic-polymer nanocomposite, or (ii) grafting a cross-linking agent onto ceramic nanostructures to form modified ceramic nanostructures, and attaching the modified ceramic nanostructures to the functionalized polymer to form a ceramic-polymer nanocomposite. A ceramic-polymer nanocomposite and use of the ceramic-polymer nanocomposite are also provided.

A crosslinking agent includes a compound represented by the following formula (1).

##STR00001##

wherein R.sup.1, R.sup.2, and R.sup.3 are independently a hydrogen atom, a fluorine atom, an alkyl group, a fluoroalkyl group, or a substituted or unsubstituted aryl group, a plurality of R.sup.1 are identical to or different from each other, a plurality of R.sup.2 are identical to or different from each other, a plurality of R.sup.3 are identical to or different from each other, provided that at least one of R.sup.1, R.sup.2, and R.sup.3 is a hydrogen atom, and at least one of R.sup.1, R.sup.2, and R.sup.3 is a fluorine atom or a fluorine atom-containing group, m is an integer from 2 to 6, l is an integer from 0 to 2, and each hydrogen on the benzene ring(s) may be substituted.

A crosslinking agent includes a compound represented by the following formula (1).

##STR00001##

wherein R.sup.1, R.sup.2, and R.sup.3 are independently a hydrogen atom, a fluorine atom, an alkyl group, a fluoroalkyl group, or a substituted or unsubstituted aryl group, a plurality of R.sup.1 are identical to or different from each other, a plurality of R.sup.2 are identical to or different from each other, a plurality of R.sup.3 are identical to or different from each other, provided that at least one of R.sup.1, R.sup.2, and R.sup.3 is a hydrogen atom, and at least one of R.sup.1, R.sup.2, and R.sup.3 is a fluorine atom or a fluorine atom-containing group, m is an integer from 2 to 6, l is an integer from 0 to 2, and each hydrogen on the benzene ring(s) may be substituted.

The invention provides a processing aid enabling short-time disappearance of melt fracture occurred in extrusion-molding a melt-fabricable resin at a high shear rate, a great reduction in extrusion pressure, and production of molded articles with good appearance. The processing aid contains a polymer containing a fluorine-containing elastomeric polymer segment and a fluorine-containing non-elastomeric polymer segment.

Described herein is a composition comprising (i) a hydrofluorothermoplastic polymer, wherein the hydrofluorothermoplastic polymer is derived from: (a) 50-85 mol % tetrafluoroethene; (b) 2-15 mol % hexafluoropropene; (c) 10-35 mol % vinylidene fluoride; and (d) 0.1 to 5 mol % of a bromine-containing monomer; and (ii) a perhalogenated thermoplastic polymer. Such compositions can be used in multilayer constructions in, for example, fuel hose applications.

This disclosure provides a fluorine-containing mixture and a fluorine-containing super-oleophobic microporous membrane using the fluorine-containing mixture as a raw material, as well as preparation methods and applications for the fluorine-containing mixture and the fluorine-containing super-oleophobic microporous membrane. The fluorine-containing mixture of the present disclosure comprises, by weight percentage, the following components: Component A: 50%˜90%; Component B: 3%˜25%; Component C: 0%˜35%; Component D: 0%˜3%; wherein Component A comprises high molecular weight polytetrafluoroethylene homopolymer or copolymer dispersion resin; Component B comprises one or more fluorine-containing alkyl acrylate monomers; Component C comprises one or more fluorine-free acrylates; Component D comprises high temperature free radical initiator. There's no need to add inflammable or explosive lubricating oil, making the process highly safe; and the obtained fluorine-containing super-oleophobic microporous membrane has high waterproof, air-permeable, oil-resistant and washable performance, in line with the needs of a new generation of waterproof and air-permeable protective clothing.