公开(公告)号：US20220073490A1

公开(公告)日：2022-03-10

申请号：US17056750

申请日：2019-05-08

申请人： BASF SE ,  Kolon Plastics Inc.

发明人： Thomas HEITZ ,  Marvin KRAMP ,  Manfred HEILIG ,  HyunSoo CHANG ,  JongMoon KIM ,  In Gi CHO

IPC分类号： C07D317/12

摘要： The present invention relates to a process for preparing dioxolane by reacting ethylene glycol with an aqueous solution of formaldehyde in the presence of an acid catalyst. The raw product comprising water, dioxolane and methanol is fed to a phase separation unit (20) wherein an organic extracting agent is present. An organic fraction stream from the phase separation unit is transferred to an upper part of a purification column (30) from which dioxolane is withdrawn as a bottom product while the distillate stream of the purification column is recycled to the phase separation unit. An aqueous fraction stream from the phase separation unit is transferred to a waste water column (40), withdrawing a waste water stream from the bottom of the waste water column, recycling a distillate stream (42) from the waste water column to the phase separation unit, and withdrawing a side stream (43) containing methanol from a stage below the feed stage of the waste water column.

公开(公告)号：US20210292461A1

公开(公告)日：2021-09-23

申请号：US17260151

申请日：2019-07-10

申请人： BASF SE ,  Kolon Plastics Inc.

发明人： Thomas HEITZ ,  Juergen DEMETER ,  Anna Karina MOELLER ,  Cho IN-GI

IPC分类号： C08G2/28 ,  C08G2/10 ,  C08L59/04 ,  C08G2/06 ,  B01J31/14

摘要： The present invention relates to a method for the deactivation of an acid catalyst during the production process of a polyoxymethylene copolymer (cPOM) by adding triisopropanolamine (tris(2-hydroxypropyl)amine) to a mixture which comprises the polyoxymethylene copolymer (cPOM) and the acid catalyst.

公开(公告)号：US20200261823A1

公开(公告)日：2020-08-20

申请号：US16062752

申请日：2016-12-07

申请人： BASF SE ,  Kolon Plastics Inc.

发明人： Achim STAMMER ,  Thomas HEITZ ,  Marvin KRAMP ,  Jong-Moon KIM ,  In-Gi CHO ,  Jin-Sang CHOI ,  Sang-Yup LEE

IPC分类号： B01D3/00 ,  C07D323/06

摘要： The present invention relates to a process for energy recovery in a process for the preparation of 1,3,5-trioxane.

公开(公告)号：US20210403447A1

公开(公告)日：2021-12-30

申请号：US17056741

申请日：2019-05-08

申请人： BASF SE ,  Kolon Plastics Inc.

发明人： Thomas HEITZ ,  Marvin KRAMP ,  Manfred HEILIG ,  HyunSoo CHANG ,  JongMoon KIM ,  In Gi CHO

IPC分类号： C07D317/12

摘要： The present invention relates to a process for preparing dioxolane by reacting ethylene glycol with an aqueous solution of formaldehyde in the presence of an acid catalyst. The raw product comprising water, dioxolane and methanol is fed to a phase separation unit (20) wherein an organic extracting agent is present. An organic fraction stream from the phase separation unit is transferred to an upper part of a purification column (30) from which dioxolane is withdrawn as a bottom product while the distillate stream of the purification column is recycled to the phase separation unit. An aqueous fraction stream from the phase separation unit is transferred to a waste water column (40), withdrawing a waste water stream from the bottom of the waste water column, withdrawing a side stream (42) from a stage between the feed stage and the reflux stage of the waste water column and recycling this stream (42) to the phase separation unit, and withdrawing a distillate stream (43) containing methanol from the waste water column.

公开(公告)号：US20210214494A1

公开(公告)日：2021-07-15

申请号：US17054144

申请日：2019-05-08

申请人： BASF SE ,  Kolon Plastics Inc.

发明人： Thomas HEITZ ,  Jürgen DEMETER ,  Jin-Sang CHOI

IPC分类号： C08G65/16 ,  C08K3/04

摘要： The present invention relates to a method for the production of a colored polyoxymethylene copolymer by mixing a raw polyoxymethylene copolymer in particulate form, comprising 2 to 30% by weight of unreacted residual monomers, with a coloring agent in particulate form, in a degassing apparatus. In addition, the present invention relates to the colored polyoxymethylene copolymer obtainable by the process and the use of the colored polyoxymethylene copolymer for the production of molding parts.

公开(公告)号：US20190202087A1

公开(公告)日：2019-07-04

申请号：US16323664

申请日：2017-08-01

申请人： BASF SE

发明人： Jerome LOHMANN ,  Peter GUTMANN ,  Bangaru Dharmapuri Sriramulu SAMPATH ,  Andreas KUENKEL ,  Juergen AHLERS ,  Uwe KEPPELER ,  Thomas HEITZ ,  Jens-Uwe SCHIERHOLZ

IPC分类号： B29B9/06 ,  B29B9/14 ,  B29C48/00 ,  C08L67/02

CPC分类号： B29B9/065 ,  B29B9/12 ,  B29B9/14 ,  B29B9/16 ,  B29C44/3461 ,  B29C44/445 ,  B29C48/0012 ,  B29C48/0022 ,  B29K2033/04 ,  B29K2105/0005 ,  B29K2995/0063 ,  C08J9/0061 ,  C08J9/0066 ,  C08J9/122 ,  C08J9/16 ,  C08J9/232 ,  C08J9/236 ,  C08J9/34 ,  C08J2201/026 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/182 ,  C08J2300/16 ,  C08J2367/02 ,  C08J2400/16 ,  C08J2467/02 ,  C08L67/02 ,  C08L2203/14

摘要： The invention relates to a process for production of expanded foam beads of one or more polyesters based on aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic diols, comprising the steps of: (a) melting the polyester and admixing the polyester with 1 to 3.5 wt %, based on the polyester, of a carbon dioxide and/or nitrogen blowing agent and also 0.1 to 2 wt % of a nucleating agent, and pressing the nucleated polyester melt, containing blowing agent, through a perforated disk controlled to a temperature between 150° C. and 185° C. and into a pelletizing chamber, (b) using a cutting device to comminute the polymer melt pressed through the perforated disk into individual expanding pellets, (c) discharging the pellets from the pelletizing chamber into a stream of water which is at a temperature of 5 to 90° C. and a pressure of 0.1 bar to 20 bar above ambient pressure.