Abstract: The present invention relates to a method of storage and/or transport of an ethylenically unsaturated compound, wherein the ethylenically unsaturated compound is protected against unwanted free-radical polymerization with a phenol.

Abstract: The present invention relates to a method of storage and/or transport of an ethylenically unsaturated compound, wherein the ethylenically unsaturated compound is protected against undesired free-radical polymerization with a sterically hindered N-oxyl.

Abstract: A process for continuously distiling acrylates by means of a rectification column, wherein the acrylate content in the feed to the rectification column is at least 80% by weight, the liquid in the bottom region of the rectification column is heated by means of an evaporator, and the parts of the evaporator that are in contact with product are made from stainless steel.

Abstract: In a first aspect, the invention relates to a process for discoloration of a colored polymeric material comprising: (i) providing a colored polymeric material and providing a solvent comprising gamma-valerolactone: (ii) contacting the colored polymeric material with a solvent comprising gamma-valerolactone at a temperature in the range of from 40 to 170° C. thereby obtaining a solvent, which is enriched in colorant compared to the solvent provided in (i), and a polymeric material, which is depleted in colorant compared to the colored polymeric material provided in (i). A second aspect of the invention is related to a polymeric material, which is depleted in colorant obtained or obtainable from the process of the first aspect. In a third aspect, the invention is related to a use of the polymeric material, which is depleted in colorant according to the second aspect for textile applications, fiber applications, packaging applications or plastic applications.

Abstract: A process for preparing acrylic acid, in which heterogeneously catalyzed gas phase partial oxidation of at least one C3 precursor of acrylic acid with molecular oxygen over catalysts in the solid state of matter at elevated temperature affords a product gas mixture comprising acrylic acid, water vapor and secondary components, then the product gas mixture is directed into a condensation column equipped with separating internals, the product gas mixture is allowed to ascend into itself within the condensation column and undergoes fractional condensation, separating the product gas mixture into a bottoms liquid comprising conversion products and secondary components that are higher-boiling than acrylic acid, a crude acrylic acid comprising water and secondary components that have been depleted overall as target product, an acid water still comprising acrylic acid and secondary components, and a residual gas mixture comprising secondary components that are lower-boiling than water, the target product is conducte

Abstract: The present invention relates to a mixture comprising at least one substituted 4-hydroxypyrazole and at least one polymerizable compound.

Abstract: The present invention relates to a method for transporting a liquid F by means of a pump P, wherein the liquid F comprises at least 10% by weight of a (meth)acrylic monomer, the pump P has a pump space (3), the pump space (3) comprises at least one transport element (4) for transporting the liquid F, the transport element (4) is connected to a drive shaft (6) in such a way that the drive shaft (6) can transmit a torque to the transport element (4), the mounting of the drive shaft is effected by means of at least two sliding bearings (5) in the pump space (3) and the sliding bearings (5) are composed of tungsten carbide.

Abstract: The present invention relates to a mixture comprising at least one substituted hydroquinone monoether and at least one polymerizable compound.

Abstract: The present invention relates to a method of redissociating Michael adducts of acrylic acid present in a liquid F in a redissociation apparatus comprising at least one separating column K, an evaporator V and a pump P, wherein, in the event of an unwanted rise in the viscosity of the residue R in the bottom space of the separating column K, the feed of the liquid F into the redissociation apparatus is stopped, the residue R in the bottom space of the separating column K is diluted and cooled with a solvent 1, and the bottom space of the separating column K is emptied.

Abstract: A cleaning device for bag filters, comprising a cleaning head which is connected via a pressure fluid hose to a pressure medium source and has a cleaning bore, which can be rotated about a main axis of the cleaning head around and exits through the pressure medium, and with a control device for controlling operating parameters, is characterized in that the cleaning head is connected via a drive shaft with a drive device which sets the cleaning bore in rotation, wherein the control device also controls the drive means.

Abstract: The present invention relates to a method of separating radioactive elements from a mixture, wherein the mixture is treated with at least one alkanesulfonic acid and at least one further acid, selected from the group consisting of hydrochloric acid, nitric acid, amidosulfonic acid and mixtures thereof and also the use of at least one alkanesulfonic acid and at least one further acid for separating radioactive elements from mixtures comprising these.

Abstract: The present invention relates to a method for the regioselective hydroformylation of polyunsaturated acyclic hydrocarbons, which are 1, 3 butadienes, which, in the 2 position, bear a saturated or monounsaturated or polyunsaturated acyclic hydrocarbon radical. The present invention also relates to the production of secondary products of these hydroformylation products, especially of ambrox.

Abstract: The present invention relates to a method for the regioselective hydroformylation of polyunsaturated acyclic hydrocarbons, which are 1, 3 butadienes, which, in the 2 position, bear a saturated or monounsaturated or polyunsaturated acyclic hydrocarbon radical. The present invention also relates to the production of secondary products of these hydroformylation products, especially of ambrox.

Abstract: The present invention relates to a method of separating radioactive elements from a mixture, wherein the mixture is treated with at least one alkanesulfonic acid and at least one further acid, selected from the group consisting of hydrochloric acid, nitric acid, amidosulfonic acid and mixtures thereof and also the use of at least one alkanesulfonic acid and at least one further acid for separating radioactive elements from mixtures comprising these.

Abstract: A multimodal polyethylene polymer having an MFR2 of 0.05 to 10.0 g/10 min, a density of 940 kg/m3 or more, a tensile modulus of 900 MPa or more wherein Formula (I).

Abstract: A multimodal polyethylene polymer having an MFR2 of 0.05 to 10.0 g/10 min, a density of 940 kg/m3 or more, a tensile modulus of 900 MPa or more wherein Formula (I).

Abstract: The present invention relates to a process for producing aromatic carbonyl compounds of formula I and aromatic imine compounds of formula III comprising the step of reacting a (hetero)aromatic halogen or sulfonate compound II wherein the variables are as defined in the claims and description, with a mixture of carbon monoxide and hydrogen in the presence of a transition metal complex catalyst. The invention also relates to specific compounds III, to compositions comprising them and to their use for combating invertebrate pests.

Abstract: A cleaning device (1) for hose filters comprising a cleaning head (5) having at least one nozzle (11) rotating about a longitudinal axis (L), is characterized in that the cleaning head (5) comprises a fixed jacket (15) having a smooth outer surface which surrounds the at least one rotating nozzle (11) at a distance and in which a series of through holes (17) are formed, said holes being distributed over the circumference of the jacket (15) and being arranged with respect to each nozzle (11) such that a jet emerging from each nozzle (11) during operation can pass through a through hole (17) at least intermittently.

Abstract: The present invention relates to a process for producing aromatic carbonyl compounds of formula I and aromatic imine compounds of formula III comprising the step of reacting a (hetero)aromatic halogen or sulfonate compound II wherein the variables are as defined in the claims and description, with a mixture of carbon monoxide and hydrogen in the presence of a transition metal complex catalyst. The invention also relates to specific compounds III, to compositions comprising them and to their use for combating invertebrate pests.

Abstract: A suction cup for a mobile cleaning device for cleaning a hose filter. The suction cup has a base body with an outer circumference secured with respect to the hose filter. And, the suction cup has a through-opening with an inner circumference and a longitudinal axis. The suction cup also has a first felt seal secured with respect to the base body outer circumference, and a second felt seal secured with respect to the through-opening inner circumference.