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    ALLOPHANATE BASED DISPERSING AGENT
    404.
    发明申请
    ALLOPHANATE BASED DISPERSING AGENT 有权

    公开(公告)号：US20220275146A1

    公开(公告)日：2022-09-01

    申请号：US17626842

    申请日：2020-07-17

    Applicant: BASF SE

    Inventor： Andreas GERNANDT ,  Huiguang KOU ,  Steffen ONCLIN ,  Clemens AUSCHRA ,  Johannes Hermann WILLENBACHER

    IPC: C08G18/78 ,  C08G18/81 ,  C08G18/83 ,  C09D175/04

    Abstract: The presently claimed invention is directed to a copolymer obtained by reacting at least one isocyanate (A) comprising at least one allophanate group and at least one active double bond with at least one isocyanate reactive component (B) to form an intermediate product (C); and reacting the intermediate product (C) with at least one active double bond reactive component (D) to obtain the copolymer which can be used as dispersant. The at least one isocyanate reactive component (B) is selected from the group consisting of monofunctional polyether amine (B1), monofunctional polyether alcohol (B2), C6-C30 monofunctional alcohol (B3) and monofunctional polyester alcohol (B4).

    A PROCESS FOR OBTAINING 4,4'-DICHLORODIPHENYL SULFONE
    407.
    发明申请
    A PROCESS FOR OBTAINING 4,4'-DICHLORODIPHENYL SULFONE 有权

    公开(公告)号：US20220274923A1

    公开(公告)日：2022-09-01

    申请号：US17635031

    申请日：2020-08-20

    Applicant: BASF SE

    Inventor： Jessica Nadine HAMANN ,  Lukas Karl METZGER ,  Stefan BLEl

    IPC: C07C315/06

    Abstract: The invention relates to a process for obtaining 4,4′-dichlorodiphenyl sulfone from an organic mixture comprising 4,4′-dichlorodiphenyl sulfone and a linear C6 to C10 carboxylic acid as organic solvent, comprising: (a) cooling the organic mixture by (a1a) mixing the organic mixture with water in a crystallization vessel to obtain a liquid mixture; (a1b) cooling the liquid mixture obtained in (a1a) to a temperature below the saturation point of 4,4′-dichlorodiphenyl sulfone by (i) reducing the pressure in the crystallization vessel to a pressure at which the water starts to evaporate, (ii) condensing the evaporated water by cooling, (iii) mixing the condensed water into the liquid mixture in the crystallization vessel, to obtain a suspension comprising crystallized 4,4′-dichlorodiphenyl sulfone; or by (a2) bringing the organic mixture into contact with at least one coolable surface and thereby reducing the temperature in the organic mixture with a cooling rate in the range from 5 to 50 K/h until a temperature in the range from 10 to 30° C. is reached, wherein the organic mixture and the at least one coolable surface have a temperature difference which is kept during the whole cooling process in the range from 1 to 30 K to obtain a suspension comprising crystallized 4,4′-dichlorodiphenyl sulfone. (b) carrying out a solid-liquid-separation of the suspension obtained in (a1b) or in (a2) to obtain a residual moisture containing solid 4,4′-dichlorodiphenyl sulfone as product and mother liquor comprising the organic solvent and water.

    2-(2,4,5-TRIMETHYLCYCLOHEX-2-EN-1-YL)ACETALDEHYDE AND DERIVATIVES AND THEIR USE AS AROMA CHEMICALS
    408.
    发明申请
    2-(2,4,5-TRIMETHYLCYCLOHEX-2-EN-1-YL)ACETALDEHYDE AND DERIVATIVES AND THEIR USE AS AROMA CHEMICALS 有权

    公开(公告)号：US20220274904A1

    公开(公告)日：2022-09-01

    申请号：US17625167

    申请日：2020-07-08

    Applicant: BASF SE

    Inventor： Melanie WEINGARTEN ,  Wolfgang SIEGEL ,  Silke WEYLAND ,  Ralf PELZER

    IPC: C07C43/162 ,  C07C43/188 ,  C07C43/303 ,  C07C33/14 ,  A61K8/33 ,  A61Q19/10 ,  C11D3/50 ,  C11D3/20 ,  C07C69/145

    Abstract: The present invention relates to 2-(2,4,5-trimethylcyclohex-2-en-1-yl)acetaldehyde and derivatives thereof, to a process for preparing said compounds, to the use of 2-(2,4,5-trimethylcyclohex-2-en-1-yl)acetaldehyde or a specific derivative thereof or of mixtures of said compounds or of a stereoisomer thereof or of a mixture of two or more stereoisomers thereof as aroma chemicals; to the use of 2-(2,4,5-trimethylcyclohex-2-en-1-yl)acetaldehyde or a specific derivative thereof for modifying the scent character of a fragranced composition; to compositions containing 2-(2,4,5-trimethylcyclohex-2-en-1-yl)acetaldehyde or a specific derivative thereof or a mixture of said compounds or a stereoisomer thereof or a mixture of two or more stereoisomers thereof; and to a method of preparing a fragranced composition or for modifying the scent character of a fragranced composition, comprising incorporating 2-(2,4,5-trimethylcyclohex-2-en-1-yl)-acetaldehyde or a specific derivative thereof or a mixture of said compounds or a stereoisomer thereof or a mixture of two or more stereoisomers thereof into said composition.

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