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    DEVICE FOR SYNTHESIZING A POLYMER WITH REDUCED FORMATION OF DEPOSITS IN THE REACTION CHAMBER
    41.
    发明专利
    DEVICE FOR SYNTHESIZING A POLYMER WITH REDUCED FORMATION OF DEPOSITS IN THE REACTION CHAMBER 未知

    公开(公告)号：CA2913521A1

    公开(公告)日：2014-12-18

    申请号：CA2913521

    申请日：2014-06-11

    Applicant: BASF SE

    Inventor： ZHU NING ,  STAMMER ACHIM ,  CLAUSS JOACHIM ,  WITT UWE ,  KORY GAD ,  BIEDASEK SILKE

    IPC: B01J19/00 ,  B01J4/00 ,  B01J19/18 ,  B01J19/20 ,  C08G69/00

    Abstract: The invention relates to a device for synthesizing a polymer accompanied by separating a gaseous substance. Said device comprises: a reactor chamber (1) having a substantially circular cylinder-shaped upper section (11), which is delimited by two circular surfaces (111, 112) and a circumferential surface (113) and has a longitudinal cylinder axis, and a lower section (12), the upper section (11) and the lower section (12) being connected to one another via the first circular surface (111); an inlet opening (2); a first outlet opening (3), which is arranged in a wall of the lower section (12); a second outlet opening (4), which is arranged in the second circular surface (112) or in the circumferential surface (113) between the inlet opening (2) and the second circular surface (112); and a removal device (51), which is arranged so as to be movable along the longitudinal cylinder axis at least between the second circular surface (112) and the inlet opening (2), and contacts the circumferential surface (113). The invention further relates to a method comprising: feeding an oligomer melt (7) into a circular cylinder-shaped first section (11) of a reaction chamber (1) through an inlet opening (2) tangentially to a circumferential surface (113) of the first section (11); polymerizing the oligomer melt (7) to form a polymer melt (8); removing the polymer melt (8) from the reaction chamber (1) through a first outlet opening (3) of the reaction chamber (1); and removing a gaseous substance (9) from the reaction chamber (1) through a second outlet opening (4) of the reaction chamber (1) above the inlet opening (2). Deposits on at least one inner wall of the first section (11) of the reaction chamber (1) above the inlet opening (2) are removed by a removal device (51).

    PROCESS FOR PRODUCING MOLDINGS
    42.
    发明专利
    PROCESS FOR PRODUCING MOLDINGS 未知

    公开(公告)号：CA2850640A1

    公开(公告)日：2013-02-28

    申请号：CA2850640

    申请日：2012-08-20

    Applicant: BASF SE

    Inventor： SCHERZER DIETRICH ,  DESBOIS PHILIPPE ,  GRUBER FREDDY ,  STAMMER ACHIM

    IPC: C08G69/18 ,  B01J2/26 ,  B29B11/14 ,  B29B11/16

    Abstract: The present invention relates to a method for producing molded articles comprising (A) at least one lactam, (B) at least one activator and (C) at least one catalyst, wherein (A) through (C) pass through treatments, comprising a) intermixing of (A), (B) and (C), b) metering (A), (B) and (C) into an apparatus for producing mixture drops, and producing mixture drops, and c) deposition of the mixture drops comprising (A), (B) and (C) on a belt and d) producing molded articles.

    44.
    发明专利
    未知

    公开(公告)号：AT540072T

    公开(公告)日：2012-01-15

    申请号：AT09765919

    申请日：2009-06-19

    Applicant: BASF SE

    Inventor： LOTH WOLFGANG ,  EL-TOUFAILI FAISSAL-ALI ,  STAMMER ACHIM ,  KORY GAD ,  GERSTLAUER ACHIM ,  BECKER JENS

    IPC: C08G69/46

    Abstract: A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises 1) carrying out the predrying process in a continuous drying apparatus which is operated in countercurrent mode or in crossflow mode with inert gas or steam, or with a mixture of inert gas and steam, using a pellet temperature in the range from 70 to 200° C., and 2) Carrying out the subsequent continuous postcondensation process in a separate vertical duct with moving bed at a pellet temperature in the range from 120 to 210° C., where the duct is operated in countercurrent mode with inert gas or steam, or with a mixture of inert gas and steam, the inert gas is introduced at least two sites along the duct, and from 15 to 90% of the inert gas is introduced at the base of the vertical duct and from 10 to 85% of the inert gas is introduced in the upper half below the surface of the pellets.

    45.
    发明专利
    未知

    公开(公告)号：AT489376T

    公开(公告)日：2010-12-15

    申请号：AT06793286

    申请日：2006-09-06

    Applicant: BASF SE

    Inventor： SIEGERT MARKUS ,  LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM

    IPC: C07D317/12

    Abstract: Processes comprising: providing a reactive distillation column having an upper region, a middle region and a lower region; feeding ethylene glycol and an aqueous formaldehyde solution into the reactive distillation column in the middle region of the reactive distillation column; reacting the ethylene glycol and the aqueous formaldehyde solution in the reactive distillation column in the presence of a catalyst to form dioxolane; removing a product stream comprising dioxolane in an amount of at least 75% by weight from the upper region of the reactive distillation column; and removing a bottom stream comprising one or more components having boiling points higher than dioxolane from the lower region of the reactive distillation column.

    48.
    发明专利
    未知

    公开(公告)号：AT414072T

    公开(公告)日：2008-11-15

    申请号：AT04804133

    申请日：2004-12-21

    Applicant: BASF SE

    Inventor： SIEGERT MARKUS ,  LANG NEVEN ,  STROEFER ECKHARD ,  STAMMER ACHIM ,  FRIESE THORSTEN ,  HASSE HANS

    IPC: C07D323/06

    Abstract: A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

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