Translation of "Fluorine rubber" in German

Examples of such polymer materials are fluorine, rubber, polyimide synthetic resin and acrylonitrile-butadiene.

In general, the fluorine rubber is used in the form of an aqueous dispersion.

The mechanical seal is made of stainless steel, tungsten carbide, fluorine rubber and other materials.

If necessary, the fluorine rubber is pulverized and dispersed in an aqueous medium using a surfactant.

A fluorine-containing, segmented thermoplastic elastomer is obtained by graft polymerization of monomers, which give an at least partly crystalline polymer or copolymer, onto the fluorine-containing rubber containing double bonds.

A fluorine-containing graft copolymer having the properties of a thermoplastic elastomer formed from an uncrosslinked fluorine-containing rubber having a Tg <0° C. and containing double bonds as a graft base onto which is grafted at least one fluorine-containing unsaturated monomer or a mixture of fluorine-containing unsaturated monomers and non-fluorine-containing unsaturated monomers or a mixture of fluorine-containing unsaturated monomers wherein the monomers are such as to give an at least partly crystalline polymer or copolymer.

Known coating compositions used for this purpose predominantly contain acrylic resins, rubber, fluorine-containing resins, silicone resins, etc.

In particular, a nitrile-butadiene rubber (NBR), an acrylate rubber (ACM), a fluorine rubber (FKM), or an ethylene-propylene-diene monomer (EPDM) can be used.

It is available as natural or synthetic rubber in forms such as chloroprene, EPDM, silicone, Buna or fluorine rubber.

The at least one further rubber is in this case selected from the group consisting of natural polyisoprene and/or synthetic polyisoprene and/or butadiene rubber and/or solution-polymerized styrene-butadiene rubber and/or emulsion-polymerized styrene-butadiene rubber and/or liquid rubbers with a molecular weight Mw greater than 20,000 g/mol and/or halobutyl rubber and/or polynorbornene and/or isoprene-isobutylene copolymer and/or ethylene-propylene-diene rubber and/or nitrile rubber and/or chloroprene rubber and/or acrylate rubber and/or fluorine rubber and/or silicone rubber and/or polysulfide rubber and/or epichlorohydrin rubber and/or styrene-isoprene-butadiene terpolymer and/or hydrated acrylonitrile butadiene rubber and/or isoprene-butadiene copolymer and/or hydrated styrene-butadiene rubber.

In a preferred embodiment, the resilient element according to the invention contains elastomers, thermoplastic elastomers, and preferably ethylene propylene diene rubber, styrene butadiene rubber, polybutadiene rubber, nitrile rubber, chloroprene rubber, fluorine rubber, silicone rubber, polypropylene, polyvinyl chloride, acrylonitrile butadiene styrene, copolymers, and/or mixtures thereof.

The elastomeric shaped part may consist, for example, of natural rubber or synthetic rubber, such as silicon rubber, polyurethane, ethene-propene rubber (EPDM), fluorine rubber (FKM) or nitrile-butadiene rubber (NBR) or of a corresponding rubber.

The fluorine rubber (FKM) is a highly fluorinated elastic copolymer and/or terpolymer, preferably an elastic copolymer and/or terpolymer containing vinylidene fluoride monomer units and containing at least one monomer of another fluorine-containing ethylenically unsaturated monomer.

The aqueous dispersion may be produced by an emulsion of the fluorine rubber which is available by emulsion polymerization.

The secondary battery (100) according to any one of claims 1 to 6, wherein the electrode further comprises a binder selected from the group consisting of polytetrafluoroethylene, polyvinylidene fluoride, and fluorine rubber.

Fluorine Rubber Roller An ultra-high heat, oil, acid, such as performance, gas permeability resistance, electrical insulation, anti-aging, flame-resistant, wear-resistant properties is also very good for special coating equipment.

Oil seal common materials are: nitrile rubber, fluorine rubber, silicon rubber, acrylic rubber, polyurethane, PTFE and so on.

The present invention relates to a new process for the preparation of low-viscosity fluorinated rubbers.

The spring element (4) again consists of a fluorinated rubber.

For example, deep-drawn steel strip as well as fluorinated rubber can be utilized as materials.

The fluoroelastomer or the fluorinated rubber can contain or be an elastic terpolymer.

The fluoropolymer or the fluorinated rubber is particularly preferably formed of a fluorinated rubber latex.

The fluorinated rubber preferably contains vinyl fluoride and/or vinylidene fluoride monomer units.

The spring element (4), a ring of fluorinated rubber, is attached behind this.

Crosslinking operations of these kinds are known to the skilled person and are used in particular for the production of highly crosslinked fluorinated rubbers.

The use of O rings made from fluorinated rubber has proven suitable for the production of solar cells.

The diaphragm is made of fluorinated rubber.

If mouldings are to be produced which are very insensitive with regard to inflammability and give O2 -indices (LOI) of more than 50 in the "oxygen-index test in accordance with ASTM D 2863", then rubbers have to be used which contain hetero-atoms, such as N, halogen or Si, for example silicone rubbers, nitrile rubbers, fluorine rubbers, chlorosulphonated or post-chlorinated olefin polymers or more particularly polychloroprene rubbers.

For this purpose, in particular the drawing on of the O rings of the fluorine rubbers sold under the name "Viton" or the use of rings of silicate fibrous material, for example calcium silicate fibrous material, has proved suitable.

In comparison with, for example, types crosslinked with bisphenols, such fluorinated rubbers crosslinked by peroxides have a considerably improved resistance to bases, nucleophiles and oxidative attack (Kautschuk and Gummi, Kunststoffe 38 (1985), 471).

The copolymers prepared according to the invention are also suitable as mixing components for fluorine rubbers (polymers based on vinylidene fluoride, tetrafluoroethylene, hexafluoropropane and perfluorinated vinyl ethers), for epichlorohydrin homo- and copolymers (in particular for epichlorohydrin copolymers with ethylene oxide and propylene oxide) and for nitrile rubbers.

A procedure analogous to the procedure described in Example 1 for isolation of the product gave 550 g of a fluorinated rubber.

These compounds are thus employed, for example, as additives in surfactants, as lubricating agents, for the surface-coating of lenses or optical fibers, as primers for fluorinated resins, as constituents of cosmetic formulations, as a modifier in fluorinated rubbers and silicone rubbers and for the production of oil-, dirt and water-repellent surfaces.

The present invention therefore provides a process for the preparation of low-viscosity fluorinated rubbers, in which at least one fluorine monomer is polymerized by free radicals in the presence of one or more compounds of the formula (I) or (II)

The deflector ring is preferably made of an acid and alkali-resistant elastomeric material, in particular of acrylonitrile butadiene rubber or fluorinated rubber, so that ageing processes are largely avoided and a long service life is guaranteed.