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    PROCESS FOR MAKING AN OXYMETHYLENE POLYMER
    3.
    发明申请
    PROCESS FOR MAKING AN OXYMETHYLENE POLYMER 审中-公开

    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.

    Process for preparing dioxolane
    4.
    发明授权
    Process for preparing dioxolane 有权

    公开(公告)号：US11655229B2

    公开(公告)日：2023-05-23

    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

    CPC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from the phase separation unit is transferred to an upper part of a purification column (30) from which dioxolane is withdrawn as a bottom product while the distillate stream of the purification column is recycled to the phase separation unit.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.

    Process for preparing dioxolane
    5.
    发明授权
    Process for preparing dioxolane 有权

    公开(公告)号：US11655228B2

    公开(公告)日：2023-05-23

    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

    CPC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.

    A METHOD FOR THE COMBINED PROCESSING OF AT LEAST TWO POLYMER MELTS
    7.
    发明申请
    A METHOD FOR THE COMBINED PROCESSING OF AT LEAST TWO POLYMER MELTS 有权

    公开(公告)号：US20220145013A1

    公开(公告)日：2022-05-12

    申请号：US17434140

    申请日：2020-03-05

    申请人： BASF SE

    发明人： Thomas Heitz ,  Johann Diedrich Brand ,  Joerg Erbes

    IPC分类号： C08J3/00 ,  C08J9/00 ,  C08J9/18 ,  C08J9/12 ,  C08L67/02 ,  B29B11/06 ,  B29B9/06 ,  B29B9/12 ,  D01F6/78 ,  D01D5/08

    摘要： The invention relates to a method for the combined processing of at least two polymer melts selected from the group consisting of (M1), (M2) and (M3), wherein (M1) is a polymer melt comprising a terephthalate polyester (A1), (M2) is a polymer melt comprising a copolyester (A2) on the basis of terephthalic acid, at least one aliphatic, ω-dicarboxylic acid and at least one aliphatic 1,ω-diol, and (M3) is a polymer melt 0 comprising a copolyester (A3) on the basis of terephthalic acid, at least one polytetramethylene glycol and at least one aliphatic 1,ω-diol. The method comprises the alternating processing of the at least two polymer melts into at least one product selected from the group consisting of pellets (P1), fibers (P2), expanded particles (P3), preforms (P4) and articles (P5).

    A Method for the Combined Production of at Least Two Target Products
    8.
    发明申请
    A Method for the Combined Production of at Least Two Target Products 有权

    公开(公告)号：US20220135737A1

    公开(公告)日：2022-05-05

    申请号：US17434051

    申请日：2020-03-05

    申请人： BASF SE

    发明人： Thomas Heitz ,  Johann Diedrich Brand ,  Joerg Erbes

    IPC分类号： C08G63/672 ,  C08G63/183 ,  C08G63/78

    摘要： The present invention relates to a method for the combined production of at least two target products selected from the group consisting of (T1), (T2) and (T3), wherein (T1) is a terephthalate polyester, (T2) is a copolyester on the basis of terephthalic acid, at least one aliphatic 1,ω-dicarboxylic acid and at least one aliphatic 1,ω-diol, and (T3) is a copolyester on the basis of terephthalic acid, polytetramethylene glycoland at least one aliphatic 1,ω-diol.