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.

A processing method of a base material sheet includes winding out the base material sheet wound up by a first core and a first porous sheet wound up by a second core, winding up by a third core the base material sheet and the first porous sheet to be overlapped with each other, and processing the base material sheet by a first processing liquid held in the first porous sheet; and winding out the base material sheet and the first porous sheet overlappingly wound up by the third core, winding up the first porous sheet by the second core, and winding up the base material sheet by the first core.

A processing method of a base material sheet includes winding out the base material sheet wound up by a first core and a first porous sheet wound up by a second core, winding up by a third core the base material sheet and the first porous sheet to be overlapped with each other, and processing the base material sheet by a first processing liquid held in the first porous sheet; and winding out the base material sheet and the first porous sheet overlappingly wound up by the third core, winding up the first porous sheet by the second core, and winding up the base material sheet by the first core.

A polymer for an electrode protective layer including a polymer (A) including a fluorine-based polymer in which a monomer unit including poly(alkylene oxide) and a monomer unit including a curable functional group (e.g., a thermocurable functional group or a photocurable functional group) are grafted on the fluorine-based polymer, and when preparing an electrode by coating an electrode active material layer using the polymer and curing (e.g., thermally curing or photocuring) the result, excellent lithium ion conductivity is obtained since lithium ion flow is not inhibited, chemical resistance for an electrolyte liquid is high, and voltage stability of a secondary battery may be enhanced by suppressing side reactions with the electrolyte liquid occurring on an electrode active material surface due to properties of a uniform and flexible protective layer.

A polymer for an electrode protective layer including a polymer (A) including a fluorine-based polymer in which a monomer unit including poly(alkylene oxide) and a monomer unit including a curable functional group (e.g., a thermocurable functional group or a photocurable functional group) are grafted on the fluorine-based polymer, and when preparing an electrode by coating an electrode active material layer using the polymer and curing (e.g., thermally curing or photocuring) the result, excellent lithium ion conductivity is obtained since lithium ion flow is not inhibited, chemical resistance for an electrolyte liquid is high, and voltage stability of a secondary battery may be enhanced by suppressing side reactions with the electrolyte liquid occurring on an electrode active material surface due to properties of a uniform and flexible protective layer.

A polymer for an electrode protective layer including a polymer (A) including a fluorine-based polymer in which a monomer unit including poly(alkylene oxide) and a monomer unit including a curable functional group (e.g., a thermocurable functional group or a photocurable functional group) are grafted on the fluorine-based polymer, and when preparing an electrode by coating an electrode active material layer using the polymer and curing (e.g., thermally curing or photocuring) the result, excellent lithium ion conductivity is obtained since lithium ion flow is not inhibited, chemical resistance for an electrolyte liquid is high, and voltage stability of a secondary battery may be enhanced by suppressing side reactions with the electrolyte liquid occurring on an electrode active material surface due to properties of a uniform and flexible protective layer.

Described herein is method of functionalizing fluorinated polymers, wherein a reaction compound is grafted onto a fluorinated polymer, wherein the fluorinated polymer comprises at least one Br, I, and Cl group and is free of —CH.sub.2CH.sub.2— linkages. In one embodiment, the functionalized fluorinated polymer comprises a perfluorinated polymer backbone with pendent groups therefrom is disclosed, wherein at least one pendent group is according to formula I: where Rf is a bond, or a divalent perfluorinated group, optionally comprising at least one in-chain ether linkage; Z is I, Br, or Cl; and X comprises a functional group selected from the group consisting of an alcohol; phosphorous acid and salts thereof; phosphoric acid and salts thereof; a silane; an amine; an amide; a hydrocarbon, optionally comprising an in-chain oxygen, nitrogen, or sulfur linkage; a carboxylic acid and salts thereof; an ester; a sulfonyl fluoride, a sulfonic acid and salts thereof; and combinations thereof. Such functionalized fluorinated polymers may be used in coating compositions.

##STR00001##

Described herein is method of functionalizing fluorinated polymers, wherein a reaction compound is grafted onto a fluorinated polymer, wherein the fluorinated polymer comprises at least one Br, I, and Cl group and is free of —CH.sub.2CH.sub.2— linkages. In one embodiment, the functionalized fluorinated polymer comprises a perfluorinated polymer backbone with pendent groups therefrom is disclosed, wherein at least one pendent group is according to formula I: where Rf is a bond, or a divalent perfluorinated group, optionally comprising at least one in-chain ether linkage; Z is I, Br, or Cl; and X comprises a functional group selected from the group consisting of an alcohol; phosphorous acid and salts thereof; phosphoric acid and salts thereof; a silane; an amine; an amide; a hydrocarbon, optionally comprising an in-chain oxygen, nitrogen, or sulfur linkage; a carboxylic acid and salts thereof; an ester; a sulfonyl fluoride, a sulfonic acid and salts thereof; and combinations thereof. Such functionalized fluorinated polymers may be used in coating compositions.

##STR00001##

The invention pertains to a method of making fluoropolymer dispersions using certain polymeric derivatives including a plurality of ionisable groups selected from the group consisting of —SO.sub.3X.sub.a, —PO.sub.3X.sub.a and —COOX.sub.a, whereas X.sub.a is H, an ammonium group or a monovalent metal, and to fluoropolymer dispersions therefrom.

The invention pertains to a method of making fluoropolymer dispersions using certain polymeric derivatives including a plurality of ionisable groups selected from the group consisting of —SO.sub.3X.sub.a, —PO.sub.3X.sub.a and —COOX.sub.a, whereas X.sub.a is H, an ammonium group or a monovalent metal, and to fluoropolymer dispersions therefrom.