Patent ID: 9680141
Date: 2017-06-13
CPC Classifications: C08K,H01M,Y02E

Claim:
1. A method for producing a separator, said method comprising: a) preparing a slip, comprising: a solvent comprising water and at least one organic compound; a thermally crosslinkable acrylic polymer; at least one silane selected from the group consisting of 3-aminopropyltriethoxysilane, 2-aminoethyl-3-aminopropyltrimethoxysilane, 3-glycidyloxy-trimethoxysilane, 3-methacryloyloxypropyltrimethoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, vinyltris(2-methoxyethoxy)silane, methyltriethoxysilane, and 3-glycidyloxypropyltriethoxysilane; particles of a ceramic; a carboxylic acid mixture having a melting point below 80° C. comprising carboxylic acids selected from the group consisting of a fatty carboxylic acid, an oily carboxylic acid and a polymeric carboxylic acid; and a silicone oil free defoamer; b) coating a sheetlike porous substrate with the slip; and c) thermally drying the coated substrate to obtain the separator.