Abstract: An impregnated material comprising an organic or inorganic material selected from the group consisting of a woven fabric, a non-woven fabric and an open cell porous material which is impregnated with a copolymer which comprises 50 to 95% by mole of repeating units derived from tetrafluoroethylene and 5 to 50% by mole of repeating units derived from perfluoroalkyl vinyl ether of the formula:CF.sub.2 .dbd.CFOR.sub.f (I)wherein R.sub.f is a C.sub.1 -C.sub.6 perfluoroalkyl group or a group of the formula:--(CF.sub.2 CFXO).sub.n --R.sub.f (II)wherein R.sub.f is the same as defined above, X is a fluorine atom or a trifluoromethyl group and n is an integer of 1 to 10, which has good chemical, corrosion, solvent and oil resistance as well as water- and oil-repellence.

Abstract: A novel fluorine-containing diacylperoxide of the formula:[RO-CH.sub.2 CF.sub.2 CF.sub.2 O-.sub.n CH.sub.2 CF.sub.2 COO-.sub.2 (I)wherein R is a C.sub.1 -C.sub.10 hydrocarbon group or halogen-containing hydrocarbon group, and n is an integer of 0 to 3, which can initiate polymerization of an ethylenically unsaturated monomer at a relatively low temperature.

Abstract: A novel fluorine-containing diacylperoxide of the formula:[RO--CH.sub.2 CF.sub.2 CF.sub.2 O--.sub.n CH.sub.2 CF.sub.2 COO--.sub.2 (I)wherein R is a C.sub.1 -C.sub.10 hydrocarbon group or halogen-containing hydrocarbon group, and n is an integer of 0 to 3, which can initiate polymerization of an ethylenically unsaturated monomer at a relatively low temperature.

Abstract: An apparatus for transferring thin sheet-like articles such as wafers is disclosed. The apparatus is provided with opposed pairs of contact elements capable of adjusting the distance between said pairs of contact elements. The thin sheet-like articles are transferred one by from a transfer passage to a treating station while they are clamped between said pairs of contact elements by a transfer mechanism movable between the transfer passage and the treating station.

Abstract: A transfer device of a sheet object in which at least one position adjustment piece is fitted in one transfer bar and at least two position adjustment pieces are fitted in another transfer bar, and in which a spacing between the two transfer bars as well as positions of the position adjustment pieces are adjustable.

Abstract: A fluorine-containing polymer substantially comprising (A) at least one fluorine-containing olefin of the formula:CF.sub.2 =CXYwherein X is a hydrogen atom or a fluorine atom and Y is a hydrogen atom, a chlorine atom, a fluorine atom, a trifluoromethyl group, a difluoromethyl group, a C.sub.1 -C.sub.3 perfluoroalkoxy group or a group of the formula:--(CF.sub.2).sub.m COOMwherein m is an integer of 0 to 3 and M is a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a sodium atom or a potassium atom but when X is a hydrogen atom, Y is always a hydrogen atom, (B) one or more C.sub.4 -C.sub.8 fluorine-containing dienes, (C) at least one iodine atom and (D) at least one saturated or unsaturated fluoro or chlorofluorohydrocarbon group, the molar ratio of the diene (B) and the olefin (A) being from 1.times.10.sup.-4 to 5.times.10.sup.-2, the iodine atom(s) (C) being from 0.001 to 10% by weight based on the weight of the polymer and the molar ratio of the group (D) and the olefin (A) being from 1.times.10.sup.-5 to 5.

Abstract: An easily cross linkable fluorine-containing polymer comprising: (1) a polymeric chain comprising one or more polymer segments, at least one polymer segment of which consists of units of at least one fluorine-containing ethylenically unsaturated compound having 2 to 8 carbon atoms, or units of said fluorine-containing ethylenically unsaturated compound and at least one other monomer selected from the group consisting a fluorine-free ethylenically unsaturated compound having 2 to 4 carbon atoms and a fluorine-containing diene having 4 to 8 carbon atoms, (2) at least one bromine atom liberated from a brominated compound of the formula: RBr.sub.x (wherein R is a saturated hydrocarbon residue and x is a number corresponding to the bonding valency of the residue R) in an amount of 0.

Abstract: A washing apparatus constructed for using a plurality of types of brushes, in a manner such that a brush is supported on an end of a swing lever, and with an object to be washed being washed by rotating the brush in contact with said object. The washing apparatus is characterized so that when a hard brush is used the swing lever is fixed. However when a soft brush is used the brush is constrained by applying to said lever a load which is balanced by, or is a little less than the weight of said brush.

Abstract: A stabilized power source parallel operation system in which the composite output current is maintained at a predetermined level even if a plurality of the parallel power sources are deenergized. Each power source has a voltage comparator, a current converter and a current comparator. The outputs of each of the voltage comparators are interconnected by an inter-power source voltage bus so that each of the current comparators compare the same current.

Abstract: A fluoroelastomer composition comprising a fluoroelastomer, an acid acceptor and a hydrofluoric acid salt of 4,4'-alkylenebis(cyclohexylamine) as a curing agent, which has an excellent scorching resistance and an excellent curing reactivity.

Abstract: A fluoroelastomer composition comprising (a) a fluoroelastomer having stabilized end group derived from an isoparaffin selected from the group consisting of isobutane, isopentane and isohexane, (b) at least one member selected from the group consisting of bivalent metal oxides, bivalent metal hydroxides and mixtures of bivalent metal oxide or metal hydroxide with metal salt of weak acid, (c) an aromatic polyhydroxy compound and (d) a quaternary ammonium compound of 8-alkyl- (or 8-aralkyl-)1,8-diazabicyclo[5.4.0]-7-undecenium, provides a fluoro-rubber having low compression set and excellent elastic properties and has excellent processing and storage properties. The fluoroelastomer can be cured with appropriate induction time and fast cure rate by the use of a specific curing agent system mentioned above.

Abstract: Elastomeric copolymer of vinylidene fluoride and at least one other fluorine-containing monomer containing 28 to 92% by mole of the vinylidene fluoride unit and having an intrinsic viscosity of 0.4 to 1.3 at 35.degree. C. in methyl ethyl ketone, which is prepared by a two-stage polymerization process of vinylidene fluoride monomer and at least one other fluorine-containing monomer wherein monomers are copolymerized in an aqueous medium in the presence of a water-soluble radical polymerization initiator at a first stage to give a first stage-copolymer having an intrinsic viscosity of 0.01 to 3.0 at 35.degree. C.