{
  "$type": "site.standard.document",
  "description": "An impregnation process of a porous support, comprising the following steps: 1) preparation of an aqueous colloidal dispersion of thermoplastic (per)fluorinated polymers; 2) a) concentration or dilution of the dispersion obtained in 1) ; b) optional surfactant addition to obtain a dispersion having…",
  "path": "/patents/1098169",
  "publishedAt": "2003-02-26T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D67/0093",
    "AUSIMONT SPA [IT]"
  ],
  "textContent": "An impregnation process of a porous support, comprising the following steps: 1) preparation of an aqueous colloidal dispersion of thermoplastic (per)fluorinated polymers; 2) a) concentration or dilution of the dispersion obtained in 1) ; b) optional surfactant addition to obtain a dispersion having a surface tension lower than 40 mN/m; 3) porous support impregnation with the latex obtained in 2b); 4) thermal treatment at a temperature of 20 DEG C higher than the glass transition temperature of the thermoplastic polymer and lower than 200 DEG C; 5) a) if the ionomer has equivalent weight lower than 650 g/eq, ionomer crosslinking, b) conversion of the functional groups into the corresponding salts; 6) optional treatment of the membrane at room temperature in an acid aqueous solution of a strong inorganic acid and subsequent washings with deionized water.",
  "title": "A process for impregnating supports"
}