Abstract: A submarine is equipped with an extending apparatus on whose free end a container (4) resistant to underwater pressure is arranged, in which an essentially recoil-free gun (5) lies. The container (4) in the submerged condition of the submarine may be brought to the water surface (15) by way of the extending apparatus, and pivoted out so that one may also shoot in the submerged condition.

Abstract: A submarine is equipped with an extending apparatus on whose free end a container (4) resistant to underwater pressure is arranged, in which an essentially recoil-free gun (5) lies. The container (4) in the submerged condition of the submarine may be brought to the water surface (15) by way of the extending apparatus, and pivoted out so that one may also shoot in the submerged condition.

Abstract: An optical observation device is connected to an extendable and retractable snorkel tube for above-water observation during the snorkel travel (travel at periscope depth) of the submarine. The optical observation device is designed as a compact unit which consists of an optronics unit with a short-travel drive. The compact unit is assembled on the snorkel tube. At least one further compact unit is provided which comprises at least one communication arrangement with a short-travel drive, wherein this further compact unit is likewise provided on the snorkel tube.

Abstract: The mast device for a submarine comprises a guiding means, a vertically traversable mast guided therein and information means which are provided at the mast upper end and which are in electrical interaction with the inside of the submarine for emitting and receiving information. The information means are arranged in a buoyant unit held on the mast upper end without connection to this. The buoyant unit is fastened to a flexible coupling means which may be let out and retracted and which is of the length essentially of the maximum desired observation depth of the submarine.

Abstract: The mast device for a submarine comprises a guiding means, a vertically traversable mast guided therein and information means which are provided at the mast upper end and which are in electrical interaction with the inside of the submarine for emitting and receiving information. The information means are arranged in a buoyant unit held on the mast upper end without connection to this. The buoyant unit is fastened to a flexible coupling means which may be let out and retracted and which is of the length essentially of the maximum desired observation depth of the submarine.

Abstract: The mast device for a submarine comprises a guiding means, a vertically traversable mast guided therein and information means which are provided at the mast upper end and which are in electrical interaction with the inside of the submarine for emitting and receiving information. The information means are arranged in a buoyant unit held on the mast upper end without connection to this. The buoyant unit is fastened to a flexible coupling means which may be let out and retracted and which is of the length essentially of the maximum desired observation depth of the submarine.

Abstract: An essentially cylindrical, elongate pressure hull includes at least one pressure antechamber arranged essentially transversely to a longitudinal axis of the pressure hull. The pressure antechamber includes an access opening to the pressure hull which is closable in a pressure-tight manner and an access opening to the outside which is closable in a pressure-tight manner.

Abstract: An optical observation device is connected to an extendable and retractable snorkel tube for above-water observation during the snorkel travel (travel at periscope depth) of the submarine. The optical observation device is designed as a compact unit which consists of an optronics unit with a short-travel drive. The compact unit is assembled on the snorkel tube. At least one further compact unit is provided which comprises at least one communication arrangement with a short-travel drive, wherein this further compact unit is likewise provided on the snorkel tube.

Abstract: Solid epoxy resin characterized in that it has been modified with a secondary amine, the resin having an epoxy value of from 0.3 to 2.2 eq/kg and a nitrogen content occasioned by the secondary amine of from 0.2 to 4.5% by weight; the use of the epoxy resin in powder coating compositions; and powder coating compositions comprising the epoxy resin.

Abstract: The mast device for a submarine comprises a guiding means, a vertically traversable mast guided therein and information means which are provided at the mast upper end and which are in electrical interaction with the inside of the submarine for emitting and receiving information. The information means are arranged in a buoyant unit held on the mast upper end without connection to this. The buoyant unit is fastened to a flexible coupling means which may be let out and retracted and which is of the length essentially of the maximum desired observation depth of the submarine.

Abstract: An epoxy resin composition comprising (A) 20-80 parts by weight of an epoxy resin, (B) 20-80 parts by weight of a curing agent, (C) 0.1-50 parts by weight of a phosphorus-containing flame retardant, and (D) 200-1,200 parts by weight of an inorganic filler cures into products having improved high-temperature exposure resistance, flame retardancy, and reflow cracking resistance. The composition eliminates blending of antimony trioxide and brominated compounds and is useful in encapsulating semiconductor devices for imparting high-temperature reliability.

Abstract: The invention relates to compounds of the formula (1) ##STR1## in which m is 0 or 1,R is a hydrogen atom or a group of formula ##STR2## T is either an (m+2)-valent aromatic group or a bisphenylene group, [Z] is a group of on average 1 to 10 structural units of the formula (3)--Q--T(OR).sub.1+m-r (EB).sub.r (3),in whichQ is a group of the formula (4) ##STR3## in which R.sup.0 is a phenyl radical substituted in a particular manner andR.sup.1 andR.sup.2 are C.sub.1 -C.sub.4 alkyl, and in which, furthermore,EB symbolizes a free valency of the group T,r has one of the values 0, 1 or 1+mand the structural units of the formula (3) are linked via their free valencies to the group [Z] such that the groups Q in each case alternate with groups T and the group [Z] overall is monovalent. As excellent flameproofing agents which are reactive towards epoxy compounds, the compounds are a useful formulation component for epoxy resin compositions.

Abstract: Mixtures essentially comprising compounds of formula I or II ##STR1## wherein X is a hydrogen atom or vinyl, A is a divalent aromatic radical which is unsubstituted or substituted by one or more C.sub.1 -C.sub.20 alkyl groups, halogen atoms or halogen-substituted C.sub.1 -C.sub.20 alkyl groups, R.sub.1, R.sub.1 ', R.sub.2, R.sub.2 ', R.sub.3 and R.sub.3 ' are each a hydrogen atom, or R.sub.1 and R.sub.1 ', R.sub.2 and R.sub.2 ' and R.sub.3 and R.sub.3 ' are each together ethylene, R.sub.4 is C.sub.1 -C.sub.6 alkyl, phenylalkyl containing 1 to 6 carbon atoms in the alkyl moiety or is trialkylsilyl containing 1 to 6 carbon atoms in each alkyl moiety, m is 0, 1 or 2, n is 0 or an average number from 1 to 200, p is an average number from 1 to 100 and q is 0 or an average number from 1 to 100, can be cured by heating and are suitable for making laminates, especially for fabricating copper-clad circuit boards.

Abstract: Compounds of general formula I ##STR1## wherein X.sub.1 is chloro or bromo,X.sub.2 is chloro, bromo or hydrogen, andY is O or S, andR.sub.1 and R.sub.2 are each independently of the other C.sub.1 -C.sub.4 alkyl, andR.sub.3 and R.sub.4 is a group of formula II ##STR2## which carries identical or different substituents and wherein R.sub.1, R.sub.2, X.sub.1 and X.sub.2 are as defined above, or R.sub.3 and R.sub.4, when taken together, form a group of formula III ##STR3## wherein R.sub.1 and R.sub.2 are as defined above, are very suitable flame retardants for polymers.

Abstract: A laminate prepared by combining at least two layers wherein at least one of which is made of a fibrous material, an epoxy resin having on average at least two 1,2-epoxide groups per molecule or a mixture of these epoxy resins and a ferrocene derivative of the formula [R.sup.1 (Fe.sup.II R.sup.2).sub.a ].sup.ab+ ab.[X].sup.-, wherein a and b independently of one another are 1 or 2, R.sup.1 is a .pi.-arene, R.sup.2 is a .pi.-arene or an indenyl- or cyclopentadienyl anion, X.sup..crclbar. is an anion [LQ.sub.m ].sup..crclbar.

Abstract: A process for the preparation of a laminate including the steps(i) preparation of a layer by bringing into contact a fibrous substrate with a curable mixture containing an epoxy resin having on average at least two 1,2-epoxide groups per molecule or a mixture of these epoxy resins and a compound of the formula I ##STR1## or a mixture of these compounds, in which a and b are independent of one another 1 or 2, R.sup.1 is a .pi.-arene, R.sup.2 is a .pi.-arene or an indenyl- or cyclopentadienyl anion, X.sup.- is an anion [LQ.sub.m ].sup.- or an anion of a partly fluorinated or perfluorinated aliphatic or aromatic sulfonic acid, L is P, As or Sb, Q is fluorine or some of the Q substituents may also be hydroxyl groups, and m corresponds to a value which exceeds the valence of L by unity,(ii) preparation of a laminated sequence from at least two layered materials which are to be bonded together(iii) compression moulding of the said laminate sequence at elevated temperature.