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    PROCESS FOR THE SYNTHESIS OF ALPHA-METHYLENE-GAMMA-BUTYROLACTONE
    3.
    发明申请
    PROCESS FOR THE SYNTHESIS OF ALPHA-METHYLENE-GAMMA-BUTYROLACTONE 有权

    公开(公告)号：US20240425890A1

    公开(公告)日：2024-12-26

    申请号：US18800537

    申请日：2024-08-12

    Applicant: Henkel AG & Co. KGaA

    Inventor： Andreas Taden ,  Horst Beck ,  Kamela Myrtollari ,  Robert Kourist ,  Andrea Nigl

    IPC: C12P17/04 ,  C12N9/02 ,  C12N9/04

    Abstract: The present application provides a process for the preparation of α-methylene-γ-butyrolactone, said process comprising the steps of: a) acetylating the C1-hydroxyl group of isoprenol to yield isoprenyl acetate; b) forming 4-acetoxy-2-methylene-butan-1-ol from said isoprenyl acetate by whole cell biotransformation, said step comprising: i) contacting a cell (CB) with a culture medium containing said isoprenyl acetate or with a culture medium contiguous with an organic phase containing said isoprenyl acetate under conditions that enable the cell to form 4-acetoxy-2-methylene-butan-1-ol from isoprenyl acetate; and, ii) optionally isolating the resultant 4-acetoxy-2-methylene-butan-1-ol, wherein said cell (CB) exhibits activity of at least one alkane monooxygenase enzyme which catalyzes the formation of 4-acetoxy-2-methylene-butan-1-ol from isoprenyl acetate; c) oxidizing said 4-acetoxy-2-methylene-butan-1-ol to yield 4-acetoxy-2-methylene butyric acid; and, d) converting said 4-acetoxy-2-methylene butyric acid to α-methylene-γ-butyrolactone by hydroxylysis to γ-hydroxy-α-methylenebutyric acid and subsequent cyclization of said γ-hydroxy-α-methylenebutyric acid.

    Semi-crystalline mixture of polyester polyols, and the use thereof
    9.
    发明授权
    Semi-crystalline mixture of polyester polyols, and the use thereof 有权

    公开(公告)号：US11807714B2

    公开(公告)日：2023-11-07

    申请号：US16739324

    申请日：2020-01-10

    Applicant: Henkel AG & Co. KGaA

    Inventor： Adrian Brandt ,  Horst Beck ,  Alexander Kux ,  Kerstin Schroeder

    IPC: C08G63/183 ,  C08G63/199 ,  C08L67/02 ,  C09J167/02 ,  C08G18/42 ,  C08G59/62 ,  C08G63/672 ,  C09J175/06

    CPC classification number: C08G63/183 ,  C08G18/425 ,  C08G18/4247 ,  C08G18/4252 ,  C08G18/4255 ,  C08G59/62 ,  C08G63/199 ,  C08G63/672 ,  C08L67/02 ,  C09J167/02 ,  C09J175/06 ,  C08G2170/20

    Abstract: The present invention relates to a semi-crystalline mixture of polyester polyols which recrystallises upon melting and which can be obtained by polycondensing a reaction mixture comprising one or more dicarboxylic acids selected from saturated aliphatic dicarboxylic acids having an even number of at least 8 methylene groups, and one or more diols selected from aliphatic diols which have at least one ether function. The invention also relates to a polymeric material which is obtained from the chemical modification of the mixture of polyester polyols with organic compounds which contain at least one isocyonate group and/or epoxide group. The mixtures and materials according to the invention are characterised by relatively low melting enthalpies, while the melting temperature can be set in a range of −30 to 60° C., meaning that it is possible to obtain easily fusible formulations containing the mixtures and materials according to the invention. The mixtures and materials according to the invention also provide such formulations with a high elasticity and breaking resistance. The present invention therefore includes the use of the polyester polyols and polymeric materials according to the invention as deforming, fusing, and extrusion means in thermoplastic materials, and the use thereof for producing adhesives and sealants, in particular hot-melt adhesives and reactive adhesives.

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