The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2026
Filed:
Dec. 16, 2021
Shanghai Hyproof Technology Co., Ltd., Shanghai, CN;
Shanghai Hyproof New Material Technology Co., Ltd, Shanghai, CN;
Shanghai Hyproof Technology Co., Ltd., Shanghai, CN;
Shanghai Hyproof New Material Technology Co., Ltd, Shanghai, CN;
Abstract
A preparation method of a high-moisture-permeability fluorine-containing super-oleophobic microporous membrane is provided having the following steps: (1) preparing a white opaque mixture of fluorine-containing polymers: adding the materials in sequence according to a weight ratio of A50%˜90%:B3%˜25%:C0%˜35%:D0%˜3%, and stirring and mixing uniformly in a non-shear manner; A is a blend of a high molecular weight polytetrafluoroethylene dispersion resin and a fluorine-containing ion exchange resin; B is a fluorine-containing alkyl acrylate monomer, or a fluorine-containing alkyl methacrylate monomer, or a mixture thereof; C is a polyurethane acrylate prepolymer, or a fluorine-free alkyl acrylate monomer, or a mixture thereof; D is a high temperature free radical initiator; (2) pouring the white opaque mixture into the blank pressing column barrel, and pressing a blank; (3) calendering into strips; (4) stretching and thermally shaping to form a membrane.