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    PREPARATION OF POLYISOCYANATES CONTAINING IMINOOXADIAZINEDIONE GROUPS AND THEIR USE
    3.
    发明申请
    PREPARATION OF POLYISOCYANATES CONTAINING IMINOOXADIAZINEDIONE GROUPS AND THEIR USE 有权

    公开(公告)号：US20250019483A1

    公开(公告)日：2025-01-16

    申请号：US18709569

    申请日：2022-11-11

    Applicant: BASF SE

    Inventor： Frederic LUCAS ,  Nico VELING ,  Kerstin HEINEN ,  Harald SCHAEFER ,  Jens SCHEIDEL ,  Thomas GENGER

    IPC: C08G18/16 ,  C08G18/02

    Abstract: A process for the preparation of polyisocyanates containing iminooxadiazinedione groups, comprising reacting at least one (cyclo)aliphatic diisocyanate in the presence of at least one oligomerization catalyst, and when the reaction has reached a predeterminable degree of conversion, based on the (cyclo)aliphatic diisocyanates, stopping the reaction by addition of at least one catalyst poison for the oligomerization catalyst, wherein the oligomerization catalyst is a salt containing a fluoride or poly(hydrogen)fluoride [F−×(HF)m] as anion and the catalyst poison is a solution containing at least one alcohol comprising at least 6 carbon atoms as solvent and wherein m is a number between 0.01 and 20.

    METHOD FOR PRODUCING LINEAR PENTENENITRILE
    5.
    发明申请
    METHOD FOR PRODUCING LINEAR PENTENENITRILE 有权
    生产线性胆固醇的方法

    公开(公告)号：US20160168082A1

    公开(公告)日：2016-06-16

    申请号：US14941167

    申请日：2015-11-13

    Applicant: BASF SE

    Inventor： Tim Jungkamp ,  Robert BAUMANN ,  Michael BARTSCH ,  Gerd HADERLEIN ,  Hermann LUYKEN ,  Jens SCHEIDEL ,  Tobias AECHTNER ,  Peter PFAB ,  Petra DECKERT ,  Wolfgang SIEGEL ,  Peter BASSLER

    IPC: C07C253/30

    CPC classification number: C07C253/30 ,  C07C253/10 ,  Y02P20/582 ,  C07C255/07

    Abstract: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) isomerizing a reactant stream which comprises 2-methyl-3-butenenitrile over at least one dissolved or dispersed isomerization catalyst to give a stream 1 which comprises the at least one isomerization catalyst, 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, (b) distilling stream 1 to obtain a stream 2 as the top product which comprises 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, and a stream 3 as the bottom product which comprises the at least one isomerization catalyst, (c) distilling stream 2 to obtain a stream 4 as the top product which, compared to stream 2, is enriched in (Z)-2-methyl-2-butenenitrile, based on the sum of all pentenenitriles in stream 2, and a stream 5 as the bottom product which, compared to stream 2, is enriched in 3-pentenenitrile and 2-methyl-3-butenenitrile, based on the sum of all pentenenitriles in stream 2, (d) distilling stream 5 to obtain a stream 6 as the bottom product which comprises 3-pentenenitrile and a stream 7 as the top product which comprises 2-methyl-3-butenenitrile.

    Abstract translation: 描述了制备3-戊烯腈的方法，其特征在于以下方法步骤：（a）在至少一种溶解或分散的异构化催化剂上异构化包含2-甲基-3-丁烯腈的反应物流，得到流1，其包含 至少一种异构化催化剂，2-甲基-3-丁烯腈，3-戊烯腈和（Z）-2-甲基-2-丁烯腈，（b）蒸馏物流1，得到作为顶部产物的物流2，其包含2-甲基 -3-丁烯腈，3-戊烯腈和（Z）-2-甲基-2-丁烯腈，以及作为底部产物的料流3，其包含至少一种异构化催化剂，（c）蒸馏物流2以获得物流4， 与流2相比，基于流2中的所有五烯丙烯的总和和作为底部产物的流5，与流2相比富含（Z）-2-甲基-2-丁烯腈的顶部产物与流2相比较 ，富含3-戊烯腈和2-甲基-3-丁烯腈，基于所有戊烯腈的总和 （d）蒸馏流5以获得作为底部产物的流6，其包含3-戊烯腈和作为顶部产物的料流7，其包含2-甲基-3-丁烯腈。

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