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：US20200048395A1

公开(公告)日：2020-02-13

申请号：US16478703

申请日：2018-01-09

申请人： BASF SE ,  Kolon Plastics Inc.

发明人： Thomas Heitz ,  Minlu ZHANG ,  Achim STAMMER ,  JongMoon KIM ,  In-Gi CHO ,  Jin-Sang CHOI

IPC分类号： C08G2/10 ,  B01J27/12 ,  C08G2/06

摘要： A process for making an oxymethylene polymer comprising polymerizing at least one compound capable of forming —CH2O— repeat units (monomer) in the presence of at least one ester of the general formula I (ester): R1—CO—O—R2 (I) wherein R1 can be hydrogen, wherein R1 and R2 are independently of each other linear or branched C1 to C10 alkyl C5 to C7 cycloalkyl —[R3-0-]nR4 wherein R3 is a linear or branched C2 to C5 alkylen and R4 is a linear of branched C1 to C5 alkyl and n is an integer of from 1 to 5. and in the presence of at least one Lewis acid.

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.