公开(公告)号：BR112015021841A2

公开(公告)日：2017-07-18

申请号：BR112015021841

申请日：2014-03-06

Applicant: BASF SE

Inventor： ACHIM STAMMER ,  DIRK MECKELNBURG ,  FAISSAL-ALI EL- TOUFAILI ,  GAD KORY ,  REINHARD LANG ,  SILKE BIEDASEK

IPC: C08G69/06 ,  C08G69/16

Abstract: resumo processo para preparação de poliamidas, poliamida e uso de uma poliamida a presente invenção diz respeito a um processo para preparação de poliamidas compreendendo uma polimerização hidrolítica e pelo menos duas etapas de extração, as quais não ocorrem em sucessão direta. 1/1

公开(公告)号：BR112015020838A2

公开(公告)日：2017-07-18

申请号：BR112015020838

申请日：2014-03-06

Applicant: BASF SE

Inventor： ACHIM STAMMER ,  GAD KORY ,  SILKE BIEDASEK ,  WILLIAM E GRANT

IPC: C08G69/06 ,  C08G69/16

公开(公告)号：MY145876A

公开(公告)日：2012-05-15

申请号：MYPI20080545

申请日：2006-09-06

Applicant: BASF SE

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

IPC: C07D317/12

Abstract: A PROCESS FOR PREPARING DIOXOLANE BY REACTING ETHYLENE GLYCOL (1) WITH FORMALDEHYDE IN AQUEOUS SOLUTION (2) IN THE PRESENCE OF CATALYSTS, WHEREIN THE REACTION IS CARRIED OUT IN A REACTIVE DISTILLATION COLUMN (RDK), WITH THE STARTING MATERIALS ETHYLENE GLYCOL (1) AND AQUEOUS FORMALDEHYDE SOLUTION (2) BEING FED INTO THE REACTIVE DISTILLATION COLUMN (RDK) IN THE MIDDLE REGION OF THE COLUMN AND A DIOXOLANE-COMPRISING STREEM (3) BEING TAKEN OFF FROM THE UPPER REGION OF THE REACTIVE DISTILLATION COLUMN (RDK) AND A BOTTOM STREAM (4) COMPRISING COMPONENTS HAVING BOILING POINTS HIGHER THAN THAT OF DIOXOLANE BEING TAKEN OFF, IS PROPOSED.

公开(公告)号：ZA200802716B

公开(公告)日：2009-09-30

申请号：ZA200802716

申请日：2008-03-27

Applicant: BASF SE

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

IPC: C07D20090101

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.