中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

6 records (took 0.022 seconds)

    PROCESS FOR PRODUCTION OF EXPANDABLE STYRENE POLYMERS
    2.
    发明专利
    PROCESS FOR PRODUCTION OF EXPANDABLE STYRENE POLYMERS 未知

    公开(公告)号：MY145366A

    公开(公告)日：2012-01-31

    申请号：MYPI20085049

    申请日：2008-12-12

    Applicant: BASF SE

    Inventor： THILO KREBS ,  JAN HOLOCH ,  BERNHARD SCHMIED

    IPC: C08F2/18

    Abstract: PROCESS FOR PRODUCTION OF EXPANDABLE STYRENE POLYMERS 5 A PROCESS FOR PRODUCTION OF EXPANDABLE STYRENE POLYMERS WITH NARROW BEAD-SIZE DISTRIBUTION WITH HIGH SPECIFIC REACTOR YIELD VIA POLYMERIZATION OF THE MONOMERS IN AQUEOUS SUSPENSION IN A STIRRED TANK IN THE PRESENCE OF A VOLATILE BLOWING AGENT, WHERE THE STYRENE-CONTAINING ORGANIC PHASE IS ADDED SIMULTANEOUSLY WITH THE AQUEOUS PHASE TO THE STIRRED TANK OVER A PERIOD OF FROM 5 10 TO 60 MINUTES.

    PROCESS AND APPARATUS FOR PELLETIZING POLYMER MELTS COMPRISING BLOW AGENT
    6.
    发明专利
    PROCESS AND APPARATUS FOR PELLETIZING POLYMER MELTS COMPRISING BLOW AGENT 未知

    公开(公告)号：MY147779A

    公开(公告)日：2013-01-31

    申请号：MYPI20083693

    申请日：2007-03-15

    Applicant: BASF SE

    Inventor： PAULUS SCHMAUS ,  MICHAEL HEEGER ,  JOACHIM RUCH ,  JAN HOLOCH ,  CHRISTIAN RASCH

    IPC: B29C44/34

    Abstract: THE INVENTION RELATES TO A PROCESS AND AN APPARATUS FOR PELLETIZING POLYMER MELTS COMPRISING BLOWING AGENT IN A PELLETIZING CHAMBER (1) THROUGH WHICH A LIQUID FLOWS, ITS PRESSURE BEING ABOVE THE AMBIENT PRESSURE. IN A FIRST STEP, THE POLYMER MELT IS INJECTED INTO THE PELLETIZING CHAMBER (1), IN A SECOND STEP THE POLYMER MELT IS CUT VIA A CUTTING APPARATUS INTO INDIVIDUAL PELLETS AND, IN A THIRD STEP, THE PELLETS PRODUCED IN THE PELLETIZING PROCESS ARE DISCHARGED WITH THE LIQUID FROM THE PELLETIZING CHAMBER (1) AND ARE THEN ISOLATED FROM THE LIQUID. THIS PROCESS ALSO COMPRISES AT LEAST ONE OF THE FOLLOWING STEPS: (A) COMMINUTION OF AGGLOMERATES OR OF PELLETS WHICH EXCEED A PRESCRIBED MAXIMUM SIZE, IN A COMMINUTING MACHINE (23) DOWNSTREAM OF THE PELLETIZING CHAMBER (1) OR IN A COMMINUTING UNIT DOWNSTREAM OF THE CUTTING APPARATUS, (B) DEPRESSURIZATION OF THE LIQUID IN A DEPRESSURIZING MACHINE (14),(C) DEPRESSURIZATION OF THE LIQUID IN A THROTTLE APPARATUS (28), WHERE THERE IS, UPSTREAM OF THE THROTTLE APPARATUS (28), A PRESSURE-EQUALIZING CONTAINER (33), (D) ISOLATION OF THE PELLETS FROM THE LIQUID, WITHOUT ANY PRIOR DEPRESSURIZATION OF THE LIQUID WITH THE PELLETS WHICH IT COMPRISES.

Patent Agency Ranking