利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.013 秒)

    METHOD FOR SELECTIVE LASER SINTERING, USING THERMOPLASTIC POLYMER POWDERS
    1.
    发明申请
    METHOD FOR SELECTIVE LASER SINTERING, USING THERMOPLASTIC POLYMER POWDERS 有权

    公开(公告)号：US20220168948A1

    公开(公告)日：2022-06-02

    申请号：US17277486

    申请日：2019-09-18

    申请人： INEOS STYROLUTION GROUP GMBH

    发明人： Bianca WILHELMUS ,  Norbert NIESSNER

    IPC分类号： B29C64/153 ,  B33Y70/00

    摘要： The present invention relates to a process for producing a three-dimensional component by means of selective laser sintering (SLS), wherein a processing temperature Tx is established in a build chamber, and a powder layer consisting of a thermoplastic polymer powder is provided in the build chamber. The thermoplastic polymer powder comprises a blend of a semicrystalline polymer, an amorphous polymer and a polymeric compatibilizer. The polymer powder is then melted in a spatially resolved manner by means of a directed beam of electromagnetic radiation, wherein binding of the regions of the melted and resolidified polymer layer by layer in multiple steps affords a three-dimensional component. In the process of the invention, the temperature in the build chamber during the performance of the individual steps varies by not more than +/−10% from the processing temperature Tx set. In addition, the processing temperature Tx differs by not more than +/−20 K from the processing temperature Tx(A) of a polymer powder comprising the corresponding semicrystalline polymer as the sole polymeric component.

    METHOD FOR THE DEPOLYMERISATION OF POLYSTYRENE IN THE PRESENCE OF FOREIGN POLYMERS
    2.
    发明申请
    METHOD FOR THE DEPOLYMERISATION OF POLYSTYRENE IN THE PRESENCE OF FOREIGN POLYMERS 有权

    公开(公告)号：US20220411351A1

    公开(公告)日：2022-12-29

    申请号：US17641842

    申请日：2020-09-17

    申请人： INEOS STYROLUTION GROUP GMBH

    发明人： Norbert NIESSNER ,  Bianca WILHELMUS ,  Achim SCHMIDT-RODENKIRCHEN ,  Konstantin MIERDEL ,  Frank NEUNER

    IPC分类号： C07C4/22 ,  C08J11/12 ,  B01J8/24

    摘要： The invention relates to a method for producing styrene monomers by the depolymerisation of polystyrene in the presence of foreign polymers, such as polyolefins. Said method comprises the following steps: a) introducing a polymer composition (A) containing: I) 10 to 99.5% by weight, based on the polymer composition (A), of polystyrene (I); and II) 0.1 to 89.9% by weight of polyolefin (II); and/or III) 0.1 to 4.9% by weight of acrylonitrile-based polymer (III); and/or IV) 0.1 to 4.9% by weight of polyester (IV), into the reaction zone (R) of a pyrolysis reactor (P); b) thermal cracking the polystyrene contained in the polymer composition (A) in the reaction zone (R) of the pyrolysis reactor (P) at a temperature of between 400-1000° C., c) removing the product mixture (G) obtained from the reaction zone (R), d) cooling of the product mixture (G), and e) separating the styrene monomers from the further components.

    RECYCLING METHOD FOR STYRENE-CONTAINING PLASTIC WASTE
    4.
    发明申请
    RECYCLING METHOD FOR STYRENE-CONTAINING PLASTIC WASTE 有权

    公开(公告)号：US20210277202A1

    公开(公告)日：2021-09-09

    申请号：US16614162

    申请日：2018-06-05

    申请人： INEOS STYROLUTION GROUP GMBH

    发明人： Bianca WILHELMUS ,  Norbert NIESSNER ,  Hannes KERSCHBAUMER ,  Mohammed ABBOUD

    IPC分类号： C08J11/12 ,  C08L25/06 ,  C07C4/22 ,  C10G1/10 ,  C10B53/07

    摘要： The invention relates to a method for economically using styrene-containing plastic waste as raw material for new high-quality plastic products as part of a raw material recycling process, optionally having the steps of pre-treating a styrene-containing starting material, decomposing the styrene-containing starting material in a suitable reactor, discharging and collecting the resulting gases and condensing the low-molecular products in a suitable separator, separating the collected low-molecular components of the previous step by means of a fractioning distillation process, and optionally additionally decomposing the styrene oligomers in a steam cracker.

    PROCESS FOR THE DEPOLYMERISATION OF POLYSTYRENE
    5.
    发明申请
    PROCESS FOR THE DEPOLYMERISATION OF POLYSTYRENE 有权

    公开(公告)号：US20220324777A1

    公开(公告)日：2022-10-13

    申请号：US17641474

    申请日：2020-09-17

    申请人： INEOS STYROLUTION GROUP GMBH

    发明人： Norbert NIESSNER ,  Bianca WILHELMUS ,  Achim SCHMIDT-RODENKIRCHEN ,  Konstantin MIERDEL ,  Frank NEUNER

    IPC分类号： C07C4/22 ,  C08J11/12

    摘要： The invention relates to a process for the preparation of styrene monomers by depolymerising polystyrene, to a device for carrying out the process and to the use of a fluidised bed reactor for the depolymerisation of polystyrene. Said process comprising the following steps: a) feeding a polymer composition (A) containing 60 to 99.9 wt. polystyrene, based on the total weight of the polymer composition (A), into the reaction zone (R) of a pyrolysis reactor (P); b) thermally cracking the polystyrene contained in the polymer composition (A) in the reaction zone (R) of the pyrolysis reactor (P) at a temperature of between 400° C. to 1000° C. to obtain a product mixture (G) containing styrene monomers and other components; c) removing the product mixture (G) obtained in step b) from the reaction zone (R) of the pyrolysis reactor (P); d) cooling the product mixture (G) removed in step c) to obtain a condensed product mixture (K) containing styrene monomers and further components; and e) separating the styrene monomers from the further components of the condensed product mixture (K) obtained in step d), wherein the average residence time (Z) of the polymer composition (A) in the reaction zone (R) of the pyrolysis reactor (P) is from 0.01 sec to 10 sec.