公开(公告)号：US20240269642A1

公开(公告)日：2024-08-15

申请号：US18293797

申请日：2022-07-25

Applicant: BASF SE

Inventor： Sorin PULBERE ,  Bernd SCHAEFER ,  Niklas BISCH ,  Till Christian BRÜGGEMANN ,  Florian BUCHBENDER ,  Steffen TSCHIRSCHWITZ

IPC: B01J19/12

CPC classification number: B01J19/127 ,  B01J2219/1943

Abstract: The invention relates to a lighting device for a photoreactor comprising a tubular housing (40) having a longitudinal axis (41) and a plurality of individual light sources (30) mounted on the inner surface of the housing (40), wherein the housing (40) comprises flow channels (46) for a heat transfer fluid, the flow channels (46) being arranged at the back side of the inner surface of the housing (40) behind the individual light sources forming a conformal cooling passage for the individual light sources. The invention further relates to a photoreactor comprising a lighting device and a reaction chamber with at least one tubular flow channel, the reaction chamber being arranged inside the lighting device and the channel wall being made of a material transmissive to the light emitted by the light sources.

公开(公告)号：US20230166232A1

公开(公告)日：2023-06-01

申请号：US17925638

申请日：2021-05-18

Applicant: BASF SE

Inventor： Bernd SCHAEFER ,  Florian BUCHBENDER ,  Steffen TSCHIRSCHWITZ ,  Michael SCHREIBER ,  Sorin PULBERE

IPC: B01J19/12 ,  B01J19/00

CPC classification number: B01J19/122 ,  B01J19/0013 ,  B01J2219/0871

Abstract: The invention relates to a lighting device, to the use of the lighting device in a photochemical reaction, to a photochemical reactor and to a method used by the lighting device. The lighting device 100 comprises an LED unit 110 configured to emit light 114 to be used in the photochemical reaction, a housing 120 configured to house the LED unit, wherein at least a part of the housing is transparent for light to be used in the photochemical reaction, wherein the housing is configured to contain a dielectric liquid transparent for light generated by the LED unit such that it is in direct contact with at least a part of the light emitting side of the LED unit, and a liquid movement arrangement 130 configured to support a movement of the dielectric liquid such that the dielectric liquid transports heat produced by the LED unit away from the LED unit.

公开(公告)号：US20220315519A1

公开(公告)日：2022-10-06

申请号：US17616911

申请日：2020-05-28

Applicant: BASF SE

Inventor： Bernd SCHAEFER ,  Wolfgang SIEGEL ,  Steffen TSCHIRSCHWITZ ,  Till BRÜGGEMANN ,  Marius Sorin PULBERE ,  Florian BUCHBENDER

IPC: C07C67/293

Abstract: The invention relates to an improved process for isomerizing polyunsaturated non-aromatic compounds including acyclic conjugated polyenes and alicyclic conjugated polyenes. In particular it relates to an improved and safe process for forming a 11-E retinoid compounds in high yield by expending as few energy as possible and with avoiding at most possible side products or product mixtures. This is achieved by feeding at least one of retinoid compounds of formula 2 to 5, or at least one of retinoid compounds of formula 2 to 5 and retinoid compound of formula 1, an organic solvent and a photosensitizer into a reaction device and irradiating the thus obtained reaction mixture with visible monochromatic light, at least 90% of the power of said monochromatic light and at most 100% of said power being emitted in the range from 460 nm to 580 nm.