Abstract: A ventilation duct for a fire rated ventilation duct wall penetration has one or more metal sheets forming said duct, wherein said metal sheet duct is covered on the outside by a heat insulating material, and said duct includes elongated stiffening members located on the outside of the duct and attached to said metal sheets. The stiffening members each comprises a metal profile and at least one non-combustible bar of inorganic material. The metal profile is fixed to the metal sheet of the duct and retains the non-combustible bar by at least partly encircling the bar.

Abstract: The invention relates to a packing- and/or transport unit comprising several fibrous insulation elements (4, 5) for flat roof insulation being arranged in at least one stack (2) and at least one support means (3) being arranged under the stack (2), whereby the stack (2) contains at least two different types of insulation elements (4, 5), which differ with respect to the material properties. A packing- and/or transport unit which is easy to handle and which allows to arrange most of the materials close to the places where it is needed is achieved in that the stacked insulation elements (4, 5) comprise lamellas (4) and/or lamella boards having a high compression strength but low point load resistance due to their fiber orientation and at least one insulation board (5) having an even higher compression strength and high point load resistance.

Abstract: The invention relates to a metal sheet (15) ventilation/smoke exhaust duct section (10) for incorporation into a metal sheet ventilation/smoke exhaust duct, said metal sheets (15) being covered on the outside by a heat insulating material (20) and said duct section (10) including elongated stiffening bar members (30) located on the outside of the duct and attached to said metal sheets (15), the invention being characterized in said bar members (30) being located at a distance from said metal sheets (15), said bar members (30) being attached to said metal sheets (15) at discrete locations along the length of the bar members (30).

Abstract: The invention relates to a metal sheet (15) ventilation/smoke exhaust duct section (10) for incorporation into a metal sheet ventilation/smoke exhaust duct, said metal sheets (15) being covered on the outside by a heat insulating material (20) and said duct section (10) including elongated stiffening bar members (30) located on the outside of the duct and attached to said metal sheets (15), the invention being characterised in said bar members (30) being located at a distance from said metal sheets (15), said bar members (30) being attached to said metal sheets (15) at discrete locations along the length of the bar members (30).

Abstract: A stator packet for magnetic levitation vehicles is described. The stator packet has a plurality of sheets (1) made from steel, two end sheets (14, 15) having perforations (16) at its ends and an anti-corrosion layer (2) at least partially surrounding the stator packet and will adhering thereto because of the perforations (16).

Abstract: A method for producing stator packs for long-stator linear motors of magnetic levitation vehicles is described. At first steel sheets are stacked to form a sheet stack, cross members are inserted into grooves of the sheet stack and the sheet stack and the cross members are connected with each other to form a solid structural unit. Further it is provided to so insert the structural unit into an open-top casting mold that the cross members are laid onto rims of the casting mold by means of head parts provided at their ends and are positioned by means of positioning pins provided at said ends. Afterwards the filling of the casting mold with a casting resin mixture takes place, advantageously pressureless, for the formation of a corrosion protection layer surrounding the sheet stack. After the hardening of the casting resin mixture the finished stator pack can be removed from the casting mold.

Abstract: A method for producing stator packs for long-stator linear motors of magnetic levitation vehicles is described. At first steel sheets (3) are stacked to form a sheet stack (2), cross members (6) are inserted into grooves of the sheet stack (2) and the sheet stack (2) and the cross members (6) are connected with each other to form a solid structural unit. Further it is provided to so insert the structural unit into an open-top casting mould (12) that the cross members (6) are laid onto rims of the casting mould (12) by means of head parts (7) provided at their ends and are positioned by means of positioning pins (19) provided at said ends. Afterwards the filling of the casting mould (12) with a casting resin mixture (22) takes place, advantageously pressureless, for the formation of a corrosion protection layer surrounding the sheet stack (2). After the hardening of the casting resin mixture (22) the finished stator pack can be removed from the casting mould (12) (FIG. 4).

Abstract: A photosensitive composition which is liquid at room temperature and which comprisesa) 18 to 22% by weight of a binder polymer based on a styrene-maleic anhydride halfester copolymer,b) 10 to 15% by weight of at least one photocurable acrylate compound,c) 0.1 to 10% by weight of a photoinitiator, andd) 45 to 70% by weight of a propylene glycol halfester or propylene glycol halfester, the sum of the components a) to d) being 100% by weight,is suitable for the production of photostructured objects, preferably for the production of telephone cards.

Abstract: Adducts obtainable by reacting (a) an epoxy resin having a OH value of 0.02-1.5 equivalents/kg and (b) a di- or polyisocyanate, said reaction being carried out with exclusion of moisture and essentially without a catalyst, can subsequently be converted by reaction with an inhibitor (c), preferably an acrylate, into storage-stable adducts.The adducts can be cured in the presence of a latent hardener conventionally used for EP/IC resin systems in a weakly exothermic reaction to give crosslinked products which have excellent properties.

Abstract: In a method of checking the gelling process after pouring a reactive resin system into a production mould, the gelling behavior of a resin system is detected by means of calibration measurements and stored. Temperature patterns of the resin system are detected and, for each temperature pattern, the temperature at which the gelling point lies is determined. A scalar value and the gelling moment temperature are associated with each temperature pattern. On carrying out a checking measurement inside a production mould, the temperature patterns at various sites inside the production mould are detected using a large number of thermocouples. Scalar values are obtained from the temperature patterns and are compared with the scalar values established during the calibration measurement in order to establish gelling moment temperatures. The particular advantage of the method described is that the checking measurement of a production mould requires the use only of thermocouples and not of gelling point probes.

Abstract: Thermosetting mixtures containing(a) an epoxy resin having on average more than one 1,2-epoxide group in the molecule,(b) a di- or polyisocyanate compound and(c) a sulfonium salt of the formulae I to IV ##STR1## in which A is C.sub.1 -C.sub.12 alkyl, C.sub.3 -C.sub.8 cycloalkyl, C.sub.4 -C.sub.10 cycloalkylalkyl or phenyl which is unsubstituted or substituted by one or more substitutents from the group comprising C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, nitro, phenyl, phenoxy, alkoxycarbonyl having 1-4 C atoms in the alkoxy radical or acryl having 1-12 C atoms, Ar, Ar.sub.1 and Ar.sub.2 indpendently of one another are each phenyl which is unsubstituted or substituted by one or more substitutents from the group comprising C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.

Abstract: Curable mixtures comprisinga) at least one epoxy resin containing on average more than one 1,2-epoxy group per molecule,b) at least one cyclic carboxylic anhydride,c) an adduct of a zinc salt of a C.sub.6 -C.sub.18 carboxylic acid with a tertiary amine, andd) optionally a filler and/or further conventional modifiers have a long pot life without impairment of the brief curing time at elevated temperatures.

Abstract: Curable mixtures comprising(a) at least one epoxy resin containing on average more than one, 1,2-epoxy group per molecule,(b) at least one cyclic carboxylic anhydride,(c) an adduct of a zinc salt of a C.sub.6 -C.sub.18 carboxylic acid with a tertiary amine, and(d) optionally a filler and/or further conventional modifiers have a long pot life without impairment of the brief curing time at elevated temperatures.

Abstract: Electrically conductive fillers obtainable by pyrolysis of a mixture of at least one metal phthalocyanine and at least one particular inorganic filler are suitable for the preparation of electrically conductive high molecular weight organic material or inorganic material.

Abstract: Polymerizable liquid synthetic resins, liquidreactive constituents of synthetic resins or liquid additives for plastics, in each case containing mineral fillers, are converted to dry, pourable mixtures by mixing with 0.25-5% by weight of a crystalline synthetic calcium silicate, which can be in diverse stages of hydration and has a high length/width ratio and width dimensions of less than 1 .mu.m, it being possible, by this means, to employ the resins not only as casting resins but also as compression moulding resins and adhesives. In addition, handling and processability are improved.

Abstract: Polymerizable liquid synthetic resins, liquid reactive constituents of synthetic resins or liquid additives for plastics, in each case containing mineral fillers, are converted to dry, pourable mixtures by mixing with 0.25-5% by weight of a crystalline synthetic calcium silicate, which can be in diverse stages of hydration and has a high length/width ratio and width dimensions of less than 1 .mu.m, it being possible, by this means, to employ the resins not only as casting resins but also as compression moulding resins and adhesives. In addition, handling and processability are improved.

Abstract: Polymerizable liquid synthetic resins, liquid reactive constituents of synthetic resins or liquid additives for plastics, in each case containing mineral fillers, are converted to dry, pourable mixtures by mixing with 0.25-5% by weight of a crystalline synthetic calcium silicate, which can be in diverse stages of hydration and has a high length/width ratio and width dimensions of less than 1 .mu.m, it being possible, by this means, to employ the resins not only as casting resins but also as compression moulding resins and adhesives. In addition, handling and processability are improved.

Abstract: Polysiloxanes containing hydroxyl groups are manufactured by reacting polysiloxanes, which have been (so-called) advanced with polyols and which contain alkoxy groups, with aliphatic or cycloaliphatic diols in the presence of a catalyst at elevated temperatures. The new polysiloxanols can be used as modifiers for organic resins such as urethane resins or epoxide resins, and give flexible, hydrophobic plastics having valuable mechanical properties.

Abstract: Polysiloxanes containing hydroxyl groups are manufactured by reacting polysiloxanes, which have been (so-called) advanced with polyols and which contain alkoxy groups, with aliphatic or cycloaliphatic diols in the presence of a catalyst at elevated temperatures. The new polysiloxanols can be used as modifiers for organic resins such as urethane resins or epoxide resins, and give flexible, hydrophobic plastics having valuable mechanical properties.

Abstract: Polysiloxanes containing hydroxyl groups are manufactured by reacting polysiloxanes containing alkoxy groups with aliphatic or cycloaliphatic-alipatic diols in the presence of a catalyst at elevated temperatures. The new polysiloxanols can be used as modifiers for organic resins, such as urethane resins or epoxide resins, and give flexible hydrophobic plastics having valuable mechanical properties.