Abstract: A cooling circuit for a motor vehicle having a cooling medium pump that circulates a cooling medium in the cooling circuit having a hydrodynamic retarder. The cooling circuit further includes a main circuit in which the cooling medium pump and a drive motor of the motor vehicle, as well as a heat exchanger are positioned. A secondary branch of the cooling circuit includes a feed that branches off from the main circuit at a branch-off point and ends in the hydrodynamic retarder, and a return which proceeds from the hydrodynamic retarder and ends at a junction location in the main circuit. The return ends upstream of the branch-off location of the feed as viewed in a flow direction of the cooling medium in the main circuit, however on the same side of the cooling medium pump or at the branch-off location of the feed in the main circuit.

Abstract: A cooling circuit for a motor vehicle having a cooling medium pump that circulates a cooling medium in the cooling circuit having a hydrodynamic retarder. The cooling circuit further includes a main circuit in which the cooling medium pump and a drive motor of the motor vehicle, as well as a heat exchanger are positioned. A secondary branch of the cooling circuit includes a feed that branches off from the main circuit at a branch-off point and ends in the hydrodynamic retarder, and a return which proceeds from the hydrodynamic retarder and ends at a junction location in the main circuit. The return ends upstream of the branch-off location of the feed as viewed in a flow direction of the cooling medium in the main circuit, however on the same side of the cooling medium pump or at the branch-off location of the feed in the main circuit.

Abstract: An automotive crashbox damper member (26) has a sequenced pre-collapse surface (34) providing sequential energy absorbing compression such that at application of longitudinal (28) force, longitudinal compression initially occurs at the pre-collapse surface (34), prior to compression of the remainder (36) of the crashbox damper member (26). In one embodiment, the pre-collapse surface (34) is a mounting surface (7) beveled (40) in roof-like fashion to a frontmost leading edge (38) over the end (32) of the crashbox damper member (26). In another embodiment, the pre-collapse surface (34) is a mounting surface (7) formed as an arched cap (11) in the form of a spherical segment over the end (32) of the crashbox damper member (26).

Abstract: An automotive crashbox damper member (26) has a sequenced pre-collapse surface (34) providing sequential energy absorbing compression such that at application of longitudinal (28) force, longitudinal compression initially occurs at the pre-collapse surface (34), prior to compression of the remainder (36) of the crashbox damper member (26). In one embodiment, the pre-collapse surface (34) is a mounting surface (7) beveled (40) in roof-like fashion to a frontmost leading edge (38) over the end (32) of the crashbox damper member (26). In another embodiment, the pre-collapse surface (34) is a mounting surface (7) formed as an arched cap (11) in the form of a spherical segment over the end (32) of the crashbox damper member (26).

Abstract: A glass composition which is lithium-free and which is suitable as a metallurgical mold powder includes, based on total weight of the glass composition: Oxide wt % Na2O  0.2-14.4 K2O 0.0-2.5 CaO 31.0-41.9 Al2O3 4.9-8.5 B2O3 0.00-1.9  SiO2 15.6-30.0 F 18.1-30.8 wherein the glass composition has a total content of Na2O+K2O+CaO which ranges from about 38.4 to about 52.6% so that the glass composition is lithium-free and suitable as a metallurgical mold powder.

Abstract: The present invention is directed to a mixture which can be used as an adhesive. The mixture broadly contains 1) a hydroxy group containing polyurethane, and 2) a polycarbonate and/or a polycaprolactone.

Abstract: Mixtures of(A) from 20 to 99 parts by weight of a soluble polyurethane,(B) up to 50 parts by weight of an aromatic vinyl compound/diene block polymer,(C) from 0.5 to 50 parts by weight of a modified aromatic vinyl compound/diene polymer and(D) from 0 to 10 parts by weight of a polyisocyanate, optionally dissolved in an organic solvent,have proved to be excellent adhesives.

Abstract: A process for the manufacture of polyester polyalcohols with amino and amide groups by the reaction of polyester polyalcohols with polyamines is characterized in that unsaturated polyester polyalcohols if necessary in admixture with saturated polyester polyalcohols are used as polyester polyalcohols, and low molecular weight, aliphatic polyamines with two primary amino groups are used as polyamines.

Abstract: The production of impact-resistant polystyrene with EPDM simplifies the process and produces improved products if a modified ethylene/propylene rubber consisting of styrene/butadiene- or diene polymers, ethylene, optionally propylene and an unconjugated diene are used as the elastifying component.The modified EPDM rubbers consisting of (a) from 20 to 90% by weight of ethylene units, (b) from 1 to 25% by weight of units of a butadiene/styrene copolymer containing a quantity of from 10 to 90% by weight of styrene, (c) from 0 to 10% by weight of units of an unconjugated diolefin and (d) C.sub.3 -C.sub.18 .alpha.-monolefin units to make up the difference to 100% by weight, are a further subject of this invention.

Abstract: 2,3-Dichlorobutadiene-(1,3) is obtained from 2,3,4-trichlorobutene-1 by dehydrohalogenation in the presence of a phase transfer catalyst, an inhibitor and oxygen according to an improved process in which the aqueous solution of an alkali metal hydroxide is added to the mixture of trichlorobutene, catalyst, inhibitor and optionally water, and the reaction is carried out at a temperature of from -10.degree. to +60.degree. C. under an inert gas which contains from 0.1 to 8% by weight of oxygen.

Abstract: EPDM rubbers having improved properties are obtained by carrying out the polymerization using a catalyst system consisting of a vanadium compound, an aluminum halide and an ester, the ester being a polymer containing ester groups.

Abstract: Addition polymers containing at least 10 mole % of recurring structural units of formula I are useful mordants for acid dyes which preferably contain at least two sulfo groups. The polymers can be used together with the dyes in dyed layers of photographic recording materials, such as in antihalo or filter layers. ##STR1## in which Q represents N or P;R.sup.1, R.sup.2, R.sup.3 represent alkyl or carbocyclic radicals or two of R.sup.1, R.sup.2 and R.sup.3 complete a 5- or 6-membered heterocyclic ring,R.sup.4 represents H or alkyl,X.sup..crclbar. represents an anion.

Abstract: As mordant for mordanting diffusing anionic dyes in image receiving layers of photographic dye diffusion materials the invention makes use of addition polymers having at least 10 mole % of recurring structural units of formula I ##STR1## in which Q represents nitrogen or phosphorus;R.sup.1, R.sup.2, R.sup.3 each represents a carbocyclic or alkyl group or two of these substituents complete a 5- or 6-membered heterocyclic ringR.sup.4 represents hydrogen or alkyl,X.crclbar. is an anion.

Abstract: A catalyst consisting of (a) a cobalt compound, (b) an aluminium organic compound, (c) water and (d) a phosphite, characterized in that the phosphite is a compound corresponding to the formula (1): ##STR1## in which R represents a C.sub.3 -C.sub.20 alkyl radical, andR.sub.1 represents hydrogen or a C.sub.1 -C.sub.6 alkyl radical.Said catalyst can be used for polymerizing butadiene.

Abstract: The molecular weight of chlorine containing elastomers are increased by adding sulphur compounds before or during the chlorination of elastomers.

Abstract: Halogenbutenylacrylates of formula ##STR1## in which R represents hydrogen or C.sub.1 -C.sub.4 alkyl and X represents halogen may be produced by reacting an acrylic acid salt of formula ##STR2## wherein M is ammonium, alkali metal or alkaline earth ion, with 1,4-di-halogen-butene-(2) in a diphasic system.

Abstract: Mixtures of(1) 99 to 1% of one or more segment copolymers of alternating linear or branched segments A and B wherein A are polymer blocks of aromatic vinyl compounds with Tg>20.degree. C. (hard segment) and B are polymer blocks containing polymerized conjugated dienes with Tg>0.degree. C. (soft segment), and(2) 1 to 99% of one or more aromatic polycarbonates in which the linear chains consist to an extent of at least 50% of structural units of the formula ##STR1## wherein X=C.sub.1 -C.sub.5 alkylene or alkylidene.

Abstract: A catalyst composition comprising (a) TiI.sub.4 and/or TiOR.sup.1 I.sub.3, (b) AlR.sub.3 and/or HAlR.sub.2 and (c) TiXCl.sub.3 can be used for polymerizing butadiene. Said catalyst can be obtained by mixing the components a, b and c in any order at temperatures from -10.degree. to +80.degree. C. R' represents C.sub.1-8 alkyl and X represents a C.sub.1-12 alkoxy radical optionally substituted one or more times by halogen, C.sub.6 or C.sub.7 cycloalkyl and/or phenyl, a C.sub.5-7 cycloalkoxy radical optionally substituted one or more times by C.sub.1-5 alkyl groups, a phenoxy group corresponding to the formula ##STR1## wherein R.sub.2 and R.sub.6 can be the same or different and are hydrogen or C.sub.1-5 alkyl, a carboxyl group having the formula R.sup.7 --COO wherein R.sup.7 is C.sub.1-12 alkyl optionally substituted one or more times by halogen, C.sub.5-7 cycloalkyl and/or phenyl, a C.sub.5-7 cycloalkyl radical optionally substituted one or more times by C.sub.1-5 alkyl groups, or phenyl.

Abstract: Branched polymers being producible by reacting an anion of a branched aromatic vinyl/diene block polymer with an aromatic polycarbonate or with a mixture of aromatic polycarbonates wherein at least 50% of the linear chains of the polycarbonate or mixture of polycarbonates consist of structural units corresponding to the Formula (1) ##STR1## in which X represents a C.sub.1 -C.sub.5 -alkylene or C.sub.1 -C.sub.5 -alkylidene radical.

Abstract: A segment polymer comprising units derived from a linear living aromatic vinyl-diene block polymer anion and from an aromatic polycarbonate in which at least 50% of the polycarbonate consist of structural units represented by the following formula (I): ##STR1## wherein X denotes C.sub.1 -C.sup.5 alkylene or alkylidene, AND WHICH HAS THERMOPLASTIC AND ELASTOMERIC PROPERTIES.