Abstract: Mixtures of fluoropolymer dispersion, wherein: a) a dispersion is formed by TFE (co)polymers with average particle sizes in the range 180–400 nm; b) another dispersion selected from: 1) (co)polymer dispersion of TFE; 2) thermoplastic copolymers of TFE; the average particle sizes of dispersion b) range from 20 to 60 nm; the ratio between the particle sizes of dispersion b) compared with those of dispersion a) is lower than 0.3.

Abstract: Mixtures of fluoropolymer dispersions comprising: a) one or more dispersions constituted by TFE homopolymers or by its copolymers with particle average sizes ranging from 180 to 400 nm; b) one or more TFE copolymer dispersions with one or more monomers containing at least one ethylene unsaturation, the comonomer amount being such that the dispersion contains a number of fibrils lower than 10% of the total number of particles; said fibrils being polymer particles having a length/diameter (L/D) ratio higher than 5; the dispersion particle average sizes are smaller of about 90 nm; the component b) contains a comonomer amount such that the resulting polymer is not elastomeric and furthermore it shows composition and viscosity characteristics of the melt such as not to be thermoprocessable.

Abstract: Mixtures of fluoropolymer dispersion, wherein:

Abstract: Mixtures of fluoropolymer dispersion, wherein: a) a dispersion is formed by TFE (co)polymers with average particle sizes in the range 180-400 nm; b) another dispersion selected from: 1) (co)polymer dispersion of TFE; 2) thermoplastic copolymers of TFE; the average particle sizes of dispersion b) range from 20 to 60 nm; the ratio between the particle sizes of dispersion b) compared with those of dispersion a) is lower than 0.3.

Abstract: Compositions formed of aqueous dispersions comprising a mixture of the following fluorinated polymers: A) (meth)acrylic (co)polymers containing fluorine, and B) cationic ionomers of fluorinated polyurethanes based on (per) fluoropolyethers, the weight ratio A):B), calculated on the dry product, being in the range 70:30 and 30:70.

Abstract: Use as lubricants having a low friction coefficient and an improved noise reduction among moving mechanical parts of dispersions comprising a fluorinated oil and a (per)fluoropolymer, said compositions dilutable with water and obtainable by mixing: a) a fluorinated oil having a (per)fluoropolyether structure, b) a concentrated aqueous dispersion of a (per)fluoropolymer (component b′), stabilized by a non ionic and non fluorinated surfactant, c) a fluorinated and/or hydrogenated surfactant, d) water.

Abstract: Use as lubricants having a low friction coefficient and an improved noise reduction among moving mechanical parts of dispersions comprising a fluorinated oil and a (per)fluoropolymer, said compositions dilutable with water and obtainable by mixing:

Abstract: Painting composition based on fluoropolymers in an aqueous dispersion, comprising a partially fluorinated non ionic polymeric compound as an additive for the control of the viscosity and in general of the rheological characteristics of the composition itself.

Abstract: Dispersions, obtained starting from a system formed by a (per)fluorinated polymer in polar solvent, comprising at least:0.1-30% by weight of a polytetrafluoroethylene or of tetrafluoroethylene copolymers with other ethylenically unsaturated, totally or partially fluorinated, monomers;50-99% by weight of fluorinated liquid;0.01-5% by weight of surfactant selected from carboxylic acids with PFPE chain and nonionic surfactants having a perfluoroalkylic or perfluoropolyether chain with a oxyalkylenic repeating unit number lower than or equal to 6;polar solvent (water and/or alcohol) complement to 100; weight ratio lower than that of the initial system containing the (per)fluoropolymer used to prepare the dispersion.

Abstract: Dispersions comprising at least:0.1-30% by weight of a polytetrafluoroethylene or tetrafluoroethylene copolymers with other ethylenically unsaturated monomers;50-99% by weight of fluorinated liquid;polar solvent (water and/or alcohol) complement to 100;0.01-5% by weight of surfactant selected from:(a) nonionic hydrogenated or(b) fluorinated, having a perfluoropolyether or perfluoroalkylic chain, both of ionic and non ionic type, selected from the following classes:A') mono and dicarboxylic acid salts;B') sulphonic acid salts;C') phosphoric mono and diesters and their mixtures, as such or salified, optionally containing amounts of triesters lower than 15% by moles;D') nonionic surfactants formed by fluorinated and polyoxyalkylenic chains with a number of oxyalkylenic repeating units higher than 6;E') cationic surfactants having one or more fluorinated hydrophobic chains.

Abstract: A method of protecting objects from graffiti using fluorinated polymers based on fluoropolyethers in a dry formulation wherein the fluorinated polymer includes a fluorinated part R.sub.F and optionally an hydrogenated part R.sub.H not containing groups capable of linking to basic acceptors by means of hydrogen bonds, the bonds linking the fluorinated part, derived from (per)fluoropolyethers, to the hydrogenated part being of simple C--O ether type, the T' terminal groups being such as to render the structure bi- or polyfunctional thus making possible the curing reaction, and subsequent curing of the fluorinated polymer.

Abstract: Non-ionic compound having the general formula:R.sub.f --L--(OCHR.sub.1 --CHR.sub.2).sub.n --O--L'--R.sub.f' (I)wherein:n is an integer comprised between 4 and 60, preferably between 8 and 30;L and L', equal to or different from each other, can be selected from:--(CFY--CO--O).sub.p R'-- and --(CFY--CO--NH).sub.p R'--wherein: p is 0 or 1; Y can be F or CF.sub.3 ; R' is an alkylic radical C.sub.1 -C.sub.5,R.sub.1, R.sub.2 can be both H or the former one H and the latter CH.sub.3.R.sub.f and R.sub.f', equal to or different from each other, can be perfluoropolyethereal radicals having a number average molecular weight comprised between 250 and 1500, preferably between 400 and 1000; and its use as thickener of aqueous latexes based on fluoropolymers.

Abstract: Method of preparation of concentrated aqueous compositions based on fluoroelastomers, capable of giving a coating having a high thickness for each passage on the surface to be protected, consisting in the milling of the additives at the powder state directly into the latex of the fluoroelastomer.

Abstract: Perfluoropolyether microemulsions of the oil-in-water or water-in-oil type, consisting of perfluoropolyethers exhibiting an average molecular weight from 1,500 to 10,000, the end groups of which being at least partially of the functionalized type, optionally containing peroxide bridges in the chain and consisting of mixtures of products having different molecular weights, of a perfluorinated surfactant and/or a co-surfactant of the alkanol type having 1 to 12 C, and of an aqueous liquid optionally comprising an electrolyte.

Abstract: Process for the production of a composite material based on a polymer matrix comprising homogeneously dispersed therein an organic and/or inorganic filler, said process consisting in mixing together the aqueous dispersions of the single components, in which the dispersed particles of the dispersion have a surface charge of the same sign and "zeta potential" between 10 and 100 mV (in absolute value) and wherein the ratio (in absolute value) between the "zeta potentials" of the particles of each dispersion is between 0.2 and 5.

Abstract: The present invention relates to a process for protecting stone materials, marble, tiles and cement as well as articles manufactured from these materials from the decay caused by the atmospheric agents and pollutants. The process uses a mixture consisting of:1) polytetrafluoroethylene in the form of an aqueous dispersion,2) an emulsion or a microemulsion of perfluoropolyethers either having or not having functional groups at their ends which is applied onto the surface of the materials or articles.

Abstract: Protecting marble, stone, tiles, cement, and similar materials utilized in the building industry from the action of atmospheric agents and pollutants, which comprises applying a perfluoropolyether having perfluoroalkyl end groups onto the surface of the article, said perfluoropolyether being in the form of an aqueous microemulsion.

Abstract: The invention relates to microemulsions of the water-in-oil type (w/o) capable of effecting ionic electric transfer and material interphase transfer, wherein the oily phase consists of a perfluoropolyether having perfluoroalkyl end groups or functional end groups of the hydrophilic type. The microemulsions are obtained using perfluorinated surfactants, in particular having a perfluoroalkylpolyethereal structure, and/or an alcohol as a co-surfactant.

Abstract: Protecting marble, stone, tiles, cement, and analogous materials utilized in the building industry, from the action of atmospheric agents and pollutants, by applying onto the surface thereof a microemulsion of perfluoropolyethers, optionally provided at one end or at both ends or in the chain with functional groups capable of acting as anchoring agents to the substrate.

Abstract: The surfaces of stony materials, tiles, cement conglomerates and relevant manufactured articles are protected from atmospheric agents and pollutants by surface application of a protective material consisting of a mixture comprising a vinylidene fluoride polymer or copolymer containing 55-100 mol % of vinylidene fluoride, 0-45 mole % of hexafluoropropene and 0-30 mol % of tetrafluoroethylene and an aqueous microemulsion or emulsion of perfluoropolyethers. Such mixtures are applied by conventional methods onto the surface to be protected.