PROCESS FOR PREPARING A SULFUR COPOLYMER
    172.
    发明公开

    公开(公告)号:US20240101823A1

    公开(公告)日:2024-03-28

    申请号:US18552651

    申请日:2022-03-21

    Applicant: BASF SE

    CPC classification number: C08L81/04 C08G75/28

    Abstract: A process for preparing a sulfur copolymer, a sulfur copolymer, and a polymer composition containing one or more sulfur copolymers are provided. The process involves copolymerizing a cyclic monothiocarbonate compound of formula




    wherein

    R1 and R2 are independently of one another hydrogen, C1-C18-alkyl, C1-C18-alkyl substituted with halogen or interrupted with O or S; C6-C18-aryl or C6-C12-aryl substituted with C1-C4-alkyl, C1-C4-alkoxy, C1-C4-alkylthio or halogen; with elemental sulfur in the presence of a polymerization initiator.

    ADDITIVE MIXTURES
    178.
    发明公开
    ADDITIVE MIXTURES 审中-公开

    公开(公告)号:US20240084104A1

    公开(公告)日:2024-03-14

    申请号:US18265864

    申请日:2021-12-08

    Applicant: BASF SE

    CPC classification number: C08K5/34924 C08K5/3435 C08K2201/012

    Abstract: The presently claimed invention relates to additive mixture comprising a compound of formula (1) and a compound of formula (2). The presently claimed invention further relates to a composition comprising an organic material which is susceptible to oxidative, thermal or light-induced degradation and the additive mixtures. The presently claimed invention also relates to a method for stabilization of organic materials by incorporating therein or applying thereto the additive mixtures. Further, the presently claimed invention relates to the use of the additive mixtures as light stabilizer for organic materials.

    Process for preparing oligo ethylene glycol methyl ether borate

    公开(公告)号:US11926639B2

    公开(公告)日:2024-03-12

    申请号:US17756443

    申请日:2020-11-19

    Applicant: BASF SE

    CPC classification number: C07F5/04

    Abstract: A process for preparing oligo ethylene glycol methyl ether borate involves feeding boric acid and oligo ethylene glycol monomethyl ether into a reactor, and reacting to obtain a raw product containing oligo ethylene glycol methyl ether borate, water, and unreacted boric acid and oligo ethylene glycol monomethyl ether. The raw product is fed to a reactive distillation device and boric acid is reacted with oligo ethylene glycmonomethyl ether for full conversion of boric acid. A distillate stream containing water is transferred from the top of the reactive distillation device to a condenser, and a condensed liquid stream is recycled to the top of the reactive distillation device. A bottom product stream containing oligo ethylene glycol methyl ether borate is withdrawn from the reactive distillation device. The bottom product stream is partially recycled to a reboiler. The resulting vapor stream is recycled to the bottom of the reactive distillation device.

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