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    Process for continuously preparing polyisobutylene
    1.
    发明授权
    Process for continuously preparing polyisobutylene 有权

    公开(公告)号：US11072570B2

    公开(公告)日：2021-07-27

    申请号：US13735385

    申请日：2013-01-07

    Applicant: BASF SE

    Inventor： Thomas Wettling ,  Stefan Hirsch ,  Markus Brym ,  Markus Weis

    IPC: C07C2/02 ,  C08F110/10

    Abstract: Continuous preparation of polyisobutylene having a content of terminal double bonds of more than 50% by polymerizing isobutene in the presence of a polymerization catalyst customary therefor, by combining a technical 1-butene-, 2-butene- and isobutene-containing C4 hydrocarbon stream together with a stream of pure isobutene and feeding them into the reaction zone in such a way that the steady-state concentration of the isobutene in the combined stream at the feed point of the combined stream into the reaction zone has an average value of at least 40% by weight, and a polymerization plant therefor.

    Copolymers comprising polyalkylene oxide groups and quaternary nitrogen atoms
    3.
    发明授权
    Copolymers comprising polyalkylene oxide groups and quaternary nitrogen atoms 有权

    公开(公告)号：US10815327B2

    公开(公告)日：2020-10-27

    申请号：US16091133

    申请日：2017-03-31

    Applicant: BASF SE

    Inventor： Aaron Flores-Figueroa ,  Martin Ruebenacker ,  Rainer Dobrawa ,  Markus Brym ,  Dieter Boeckh ,  Frank Huelskoetter ,  Glenn Ward ,  James Goodwin ,  Melissa Cuthbertson ,  Stefano Scialla

    IPC: C08F220/28 ,  C11D3/37 ,  C11D11/00 ,  C11D17/04

    Abstract: A copolymer which comprises, in copolymerized form, (A) 60 to 99% by weight of at least one monoethylenically unsaturated polyalkylene oxide monomer of the formula I (I) in which the variables have the following meanings: X is —CH2— or —CO—, if Y is —O—; is —CO—, if Y is —NH—; Y is —O— or —NH—; R1 is hydrogen or methyl; R2 are identical or different C2-C6-alkylene radicals, which may be arranged blockwise or randomly; R3 is hydrogen or C1-C4-alkyl; n is an integer from 25 to 75, (B) 1 to 40% by weight of at least one quaternized nitrogen-containing monoethylenically unsaturated monomer selected from the group consisting of monomers of formula Ha to IId (Ha-IId) in which the variables have the following meanings: R is C1-C4-alkyl or benzyl; R′ is hydrogen or methyl; Y is —O— or —NH—; A is C1-C6-alkylene; X— is halide, C1-C4-alkyl sulfate, C1-C4-alkylsulfonate and Ci-C4-alkyl carbonate, (C) 0 to 10% by weight of anionic monoethylenically unsaturated monomers, and (D) 0 to 30% by weight of other nonionic monoethylenically unsaturated monomers and has an average molecular weight Mw of >100,000.

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