| abstract |
FIELD: chemical industry. SUBSTANCE: described is aqueous dispersion comprising fluoropolymers prepared by emulsion polymerization and forming film during sintering operation. Aqueous dispersion comprises tetrafluoroethylene based fluoropolymer (A) having average particle size of 180-400 nm and tetrafluoroethylene based fluoropolymer (B) having average particle size of 50-280 nm, particle size of fluoropolymer B by factor of about 0.3-0.7 lower than particle size of fluoropolymer (A), and entire dispersion has nemonomodal numerical distribution of particle diameter. Also described is method of preparing said dispersions. EFFECT: dispersions suitable for preparation of coatings on smooth, porous and fibrous materials. 19 cl, 7 ex, 3 tbl |