Abstract: This invention relates to plastoelastomeric polyolefinic compositions comprising an intimate mixture of the following components, in the indicated percentages by weight:(A) 10-50% of non cross-linked polypropylene;(B) 2-10% of ethylene/propylene/(diene) non cross-linked elastomeric copolymer,(C) 30-40% of polymeric product which is insoluble in xylene at 135.degree. C., comprising polypropylene and ethylene/propylene/(diene) copolymer, and(D) 5-58% of an extender oil.This invention also relates to a process for preparing the above compositions, which consists in subjecting to vulcanization under dynamic conditions a mixture comprising, in % by weight;(A) 20-80% of polypropylene;(B) 80-20% of ethylene/propylene/(diene) elastomeric copolymer,(C) 0.1-10%, referred to such copolymer, of a peroxide,(D) 5-60%, referred to such peroxide, of a furan derivative as a cross-linking coadjuvant.and in adding, after vulcanization, the extender oil in an amount ranging from 6 to 100% calculated on the vulcanized product.

Abstract: Preparation of fluorooxy-fluorosulfonyl-fluorocompounds by means of the direct fluorination with elemental fluorine of various .beta.-sultones according to the following reaction scheme: ##STR1## wherein R.sub.1 and R.sub.2, which can be either equal to, or different from, each other, represent a fluorine or chlorine atom, or an alkyl radical partially or totally halogenated with fluorine and/or chlorine.The reaction takes place in continuous in the presence of a fluorination catalyst, preferably constituted by an alkali-metal fluoride preferably supported on a metal material, at temperatures comprised within the range of from -30.degree. C. to +100.degree. C., and under the pressure comprised within the range of from 50 to 800 kPa; said catalyst is a fixed-bed catalyst, or is suspended in a reaction medium inert under the operating conditions.

Abstract: A non-fluorinated epoxy prepolymer of known type is mixed with a fluorinated epoxy prepolymer containing perfluoropolyether blocks or perfluoroalkylene blocks of type --(CF.sub.2 CF.sub.2).sub.n -- and/or of type ##STR1## and the two prepolymers are co-cured by treating the mixture with cross-linking agents of known type suitable for epoxy resins, thereby obtaining a cross-linked epoxy resin having a fluorine content.ltoreq.30% by weight, preferably.ltoreq.25% by weight.

Abstract: Syndet soap cakes (soap bars) containing, besides the usual components, from 0.001 to 10% by weight of perfluoropolyethers having perfluoroalkyl end groups. Among the suitable perfluoropolyethers are those which contain one or more repeating perfluorooxyalkylene units selected from the group consisting of (CF.sub.2 --CF.sub.2 O), (CF.sub.2 O), (C.sub.3 F.sub.6 O), (CF.sub.2 O--CF.sub.2 --CF.sub.2 O), (CF.sub.2 --CF.sub.2 CF.sub.2 O), ##STR1## wherein the R.sub.f III groups, which may be equal to, or different from, one another, are a fluorine atom or a perfluoroalkyl group.

Abstract: Novel perfluorodiaziridiness having the formula: ##STR1## wherein: R.sup.1 and R.sub.2, alike or different from each other, represent a perfluoroalkyl group of from 1 to 10 carbon atoms, andR.sub.3 represents a fluorine atom, or a perfluoroalkyl group of from 1 to 9 carbon atoms.These perfluorodiaziridines are obtained by reacting perfluoroaminooxaziridines with a source of fluoride ions.

Abstract: Preparing fluorinated conjugated olefinic products having, among others, the formulae:R.sub.x O--(CF.dbd.CF).sub.m --F (A)R.sub.x O--(CF.dbd.CF).sub.m --OR.sub.x (B)F--(CF.dbd.CF).sub.m --F (C), andR.sub.y --(CF.dbd.CF).sub.m --F (D)wherein:R.sub.x and R.sub.y represent, among others, a perhalogenated alkyl radical containing from 1 to 10 carbon atoms in the case of R.sub.x and from 1 to 9 carbon atoms in the case of R.sub.y, andm is a numeral in the range of from 2 to 10.These olefinic products are obtained by reacting telomeric products having, among others, the formulae:R.sub.x O--(CFCl--CFCl).sub.m --FR.sub.x O--(CFCl--CFCl).sub.m --OR.sub.xF--(CFCl--CFCl).sub.m --F, andR.sub.y --(CFCl--CFCl).sub.

Abstract: By means of radicalic starters, fluoroolefins are polymerized in the presence of perfluoropolyethers containing, at one or at both ends, a bromine atom, in such amounts that the weight ratio between the perfluoropolyethers and the fluorinated olefins in the resulting product ranges from 4/1 to 1/50. The bromine-containing perfluoropolyethers utilized in the process have a molecular weight from 400 to 10,000, and preferably from 600 to 8,000. The resulting polymeric products comprise sequences of perfluoroolefinic units and perfluoropolyether blocks.

Abstract: Preparing perfluoro-(2-bromoethyl-vinyl-ether)CBrF.sub.2 --CF.sub.2 --O--CF.dbd.CF.sub.2by the dechlorination of 2-bromo-1',2'-dichloro-perfluorodiethyl-etherCBrF.sub.2 --CF.sub.2 --O--CClF--CClF.sub.2in the presence of copper and a solvent constituted by an aliphatic amide of the formula ##STR1## wherein R.sub.1 and R.sub.2 are either H or (C.sub.1 -C.sub.2)-alkyl groups andR.sub.3 is a (C.sub.1 -C.sub.2)-alkyl group,at temperatures within the range of from 100.degree. up to 160.degree. C.

Abstract: By reacting 3,3,4,4-tetrafluoro-2-(trifluoromethyl)-1,2-oxazetidine (I) with a Lewis acid, in particular SbF.sub.5, three novel fluorinated compounds (II), (III) and (IV) are obtained: ##STR1## The compounds are useful as lubricants.

Abstract: Waterproofing sheets or membranes comprising a support constituted by or comprising a vulcanized polyolefinic rubber enclosed in a structure of sandwich type between two layers of bituminous composition selected from:(1) compositions comprising, by weight(A) 60-90% of bitumen(B) 3.5-20% of EPM or EPDM rubber(C) 3-20% of HD polyethylene(D) 1.5-10% EVA copolymer(E) 0-10% of isotactic polypropylene(F) 0-20% of inorganic filler(2) compositions comprising, by weight(A) 60-90% of bitumen(B) 40-10% of styrene-butadiene elastomeric copolymer(C) 0-20% of amorphous polypropylene(D) 0-20% of inorganic filler.

Abstract: Fluorinated polymers having epoxy resin structure, containing at least 10% by weight, preferably 20% by weight, of fluorine, prepared starting from epichlorohydrin and from one or more diols, at least one of which being a perfluoroalkylene diol, and by using conventional cross-linking agents for epoxy resins, such as anhydrides of dicarboxylic acids, di- or tri-isocyanates, polyfunctional amines.

Abstract: Perfluoro-oxaziridines, characterized by the presence of an aminic group in position 3 of the oxaziridine ring, of the formula: ##STR1## wherein each R is independently either F or a perfluoro-alkyl group, and a process for their preparation, consisting in reacting the corresponding perfluoroimine with H.sub.2 O.sub.2, in the presence of a base in a dipolar aprotic solvent.

Abstract: Co-vulcanizable compositions comprising (A) 55-85% by weight of a fluoroelastomeric copolymer of vinylidene fluoride with perfluoropropene and possibly tetrafluoroethylene; (B) 45-15% by weight of a copolymer of tetrafluoroethylene and propylene; (C) 0.7-2.5 parts, per 100 parts of the (A)+(B) blend, of a bisphenolic compound; (D) 0.3-1.5 parts, per 100 parts of the (A)+(B) blend, of a quaternary ammonium, phosphonium or aminophosphonium organic compound; (E) 0.4-5 parts, per 100 parts of the (A)+(B) blend, of an organic peroxide; (F) 1-5% by weight, as referred to (A)+(B), of a peroxidic cross-linking coagent.