Abstract: The present invention relates to the use of an aqueous polymer dispersion comprising dispersed particles of at least one polymer A1 having a glass transition temperature, Tg, of from −20° C. to +35° C.

Abstract: The present invention relates to a process for preparing phenols by adding an aqueous base to the reaction product from the acid-catalyzed cleavage of alkylaryl hydroperoxides while maintaining a homogeneous phase prior to the work-up of the product.

Abstract: The present invention relates to a process for preparing phenols, in which the pH of the reaction product from the acid-catalyzed cleavage of alkylaryl hydroperoxides is set to a value of at least 8 at a temperature of at least 100° C. prior to the work-up of the product. This measure enables the content of undesirable by-products, e.g. hydroxyacetone, in the cleavage product to be significantly reduced. This procedure is particularly advantageously integrated into a process for preparing phenols by: a) acid-catalyzed cleavage of alkylaryl hydroperoxides and b) thermal after-treatment of the cleavage product from step a), with the temperature in step b) being higher than in step a) and is at least 100° C., wherein the adjustment to a pH of at least 8 is carried out after the thermal after-treatment and prior to cooling of the cleavage product.

Abstract: A storage shelf system for hanging goods, for example, a storage system for articles of clothing hanging on clothes hangers, essentially includes a hanging conveyor of the power-and-free type with trolleys traveling on rails, a storage unit, operating devices for loading and unloading the high shelf storage system, and storage rods for receiving the goods during transport and storage thereof, wherein the trolleys, the operating devices, and the high shelf storage system are equipped with supports and corresponding securing devices, such as locking pawls, locking bolts and the like, for securing the storage rods in a positively engaging manner.

Abstract: The cleavage product from the acid-catalyzed cleavage of cumene hydroperoxide into phenol and acetone is subjected to thermal after-treatment by a process, which comprises heating the cleavage product in a reactor, wherein the heat supplied for the thermal treatment is the heat generated by at least one exothermic reaction which occurs in the reactor. The exothermic reaction which proceeds in the cleavage product is preferably the cleavage of cumene hydroperoxide.

Abstract: The present invention relates to a process for preparing phenols, in which the pH of the reaction product from the acid-catalyzed cleavage of alkylaryl hydroperoxides is set to a value of at least 8 at a temperature of at least 100° C. prior to the work-up of the product. This measure enables the content of undesirable by-products, e.g. hydroxyacetone, in the cleavage product to be significantly reduced.

Abstract: A process for reducing the salt content of fractions comprising high boilers obtained in the preparation of phenol from cumene, by extraction, is claimed. In the preparation of phenol from cumene, not only phenol and acetone but also by-products such as dimethyl phenyl carbinol or acetophenone are formed in the cleavage of cumene hydroperoxide. In the work-up of the cleavage product phase by distillation, these by-products are obtained as a fraction which boils only at high temperatures. These fractions further comprise alkali metal in the form of salts as a result of the neutralization by means of aqueous sodium hydroxide after the acid catalyzed cleavage. The presence of salt in this phase makes the work-up of this phase considerably more difficult. The salt is usually removed from the fraction by extraction of the fraction with water. However, considerable problems can occur if the aqueous phase cannot be cleanly separated from the organic phase.

Abstract: A process for the cleavage of alkylaryl hydroperoxides includes steps for producing a mixture of a concentrate that contains at least one alkylaryl hydroperoxide to be cleaved and a cleavage product obtained from the cleavage of an alkylaryl hydroperoxide, dividing this mixture into at least two parts and cleaving the alkylaryl hydroperoxides in parallel at different temperatures. One of the two parts is treated at a temperature sufficiently high for an integrated thermal post-treatment to be achieved. The process consumes less energy since less steam has to be used. Problems which can result from fouling in heat exchangers are largely prevented. No second feed point for alkylaryl hydroperoxide has to be provided. The process can be used in the preparation of phenol and acetone by the Hock method.

Abstract: A process for the cleavage of alkylaryl hydroperoxides includes steps for producing a mixture of a concentrate that contains at least one alkylaryl hydroperoxide to be cleaved and a cleavage product obtained from the cleavage of an alkylaryl hydroperoxide, dividing this mixture into at least two parts and cleaving the alkylaryl hydroperoxides in parallel at different temperatures. One of the two parts is treated at a temperature sufficiently high for an integrated thermal post-treatment to be achieved. The process consumes less energy since less steam has to be used. Problems which can result from fouling in heat exchangers are largely prevented. No second feed point for alkylaryl hydroperoxide has to be provided. The process can be used in the preparation of phenol and acetone by the Hock method.

Abstract: A storage shelf system for hanging goods, for example, a storage system for articles of clothing hanging on clothes hangers, essentially includes a hanging conveyor of the power-and-free type with trolleys traveling on rails, a storage unit, operating devices for loading and unloading the high shelf storage system, and storage rods for receiving the goods during transport and storage thereof, wherein the trolleys, the operating devices, and the high shelf storage system are equipped with supports and corresponding securing devices, such as locking pawls, locking bolts and the like, for securing the storage rods in a positively engaging manner.

Abstract: Phenol and acetone are prepared by a process comprising homogeneously cleaving cumene hydroperoxide in the presence of acid catalyst in a cleavage apparatus comprising at least one reactor having plug flow characteristics thereby producing a cleavage product; recycling some of the cleavage product stream by combining the recycled cleavage product stream with the cumene hydroperoxide-containing feed stream fed to said cleavage apparatus under the condition that the mass flow ratio of the recycled partial cleavage product stream to the cumene hydroperoxide-containing feed stream sent to the cleavage reactor is less than 10.

Abstract: The invention concerns an apparatus for mechanically treating paper and includes two engraved cylinders each mounted between two support plates of the apparatus in a mutually tangential manner by means of cylindrical bearings affixed in corresponding housings fitted into the support plates, a first roller of the engraved rollers being mounted on a cradle pivoting relative to a stationary base plate on which is mounted the second engraved roller, the invention being characterized in that the cylindrical bearings are affixed in housings bounded at least in part by a detachable bracket which, when detached, frees a radial aperture through which the cylindrical bearing can be removed along a radial direction.

Abstract: Formaldehyde-free aqueous binders compriseA) a polymer containing from 5 to [lacuna]% by weight of units derived from an ethylenically unsaturated acid anhydride or from an ethylenically unsaturated dicarboxylic acid whose carboxyl groups can form an anhydride group, andB) an alkanolamine having at least two hydroxyl groups.

Abstract: In order to be able to dispense with the time-consuming and expensive manual cleaning of ship's hulls (4), a cleaning installation is proposed which consists of at least one cleaning roller (2, 3) which can be driven to rotate, is rotatably mounted in a rack (1) and whose roller structures are positioned at least partially below the surface of the water.

Abstract: Formaldehyde-free aqueous synthetic resin dispersions are obtainable by single-stage emulsion polymerization of monomer mixtures containing(A) from 50 to 99% by weight of at least one monomer selected from the group consisting of the acrylic and methacrylic esters of C.sub.1 -C.sub.14 -alkanols, the vinyl esters of monocarboxylic acids having up to 5 carbon atoms, and styrene (monomer A),(B) from 0.5 to 40% by weight of at least one of the monomers acrylonitrile and methacrylonitrile (monomer B),(C) from 0.5 to 10% by weight of at least one monomer of the general formula I ##STR1## where R.sup.1 is hydrogen or methyl and R.sup.2 and R.sup.3 are each independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl (monomer C),(D) from 0 to 5% by weight of at least one monomer selected from the group consisting of the 3 carbon to 5 carbon .alpha.,.beta.

Abstract: A component having a split running face for rolling elements, running face being disposed partially on a bearing cap, and a method of producing the same. According to the method, a preform is made from a material having a carbon content of at least 0.5 percent by weight; the preform is separated by fracture separation at a separation location of the preform thereby producing the bearing cap and a remainder; skin layer hardening is performed on the running face thereby producing a skin hardened layer such that the running face acquires a Rockwell hardness of 55 according to the Rockwell cone method.

Abstract: There is described a low flammability carpet floor covering comprising a backing material, a tied-in pile yarn, and a back finish, wherein the pile yarn comprises low flammability synthetic fibers, the backing material comprises normal or low flammability synthetic fibers, and the back finish comprises a polyurethane composed of the radicals of the formulae I to VII:--CO--A1--CO-- (I)--CO--A2--CO-- (II)(--O--).sub.n --A3--(COOH).sub.m (III)--O--B1--O-- (IV)--O--B2--(O--).sub.

Abstract: There is described a recyclable carpet floor covering comprising a backing, a tied-in pile yarn and a back finish with or without a secondary backing adhered to the (primary) backing, wherein the pile yarn, the (primary) backing and a secondary backing comprise polyester fibers and the back finish for the (primary) backing and for adhering a secondary backing comprises a consolidating and adhering composition comprising a combination of 10-70% by weight of a water-soluble or -dispersible first polyester A, and 90-30% by weight of a water-insoluble second polyester B, There are further described a process for producing the recyclable carpet floor covering and also an aqueous preparation of the consolidating and adhering composition comprising the polyesters A and B and the use thereof for consolidating the carpet floor coverings and optionally adhering them to secondary backings.

Abstract: A method of producing powder forged components produces parts which precisely fit together, the method including the steps of: forming a one-piece preform by pressing from powder; forming at least one tear notch in the preform at a selected location; sintering the preform; providing a protective layer on each tear notch; forging the preform into a component, including closing each tear notch during the forging to form a corresponding slit; cooling the component; and separating the component at the corresponding selected location into a plurality of individual parts by breaking.

Abstract: Several pyrotechnic smoke screen sets are arranged on top of each other. Each of them has an igniter and a decomposition sets. They are in separate containers which, in succession, are ignited by a delay device at a desired interval.