公开(公告)号：EP0777564B2

公开(公告)日：2003-03-19

申请号：EP95924976.4

申请日：1995-07-05

申请人： BAYER AG ,  Hennecke GmbH

发明人： EBELING, Wilfried ,  EIBEN, Robert ,  JACOBS, Gundolf ,  RABE, Hansjürgen ,  STEILEN, Herbert ,  THIEBES, Florian

IPC分类号： B29C44/46

CPC分类号： C08J9/122 ,  B29C44/3473 ,  B29C44/461 ,  C08J2375/04

摘要： The invention concerns a process for preparing foamed materials from two-component reactive plastics materials using carbon dioxide as expanding agent and by mixing at least one of the reactive components with carbon dioxide under pressure and generating a mixture containing liquid carbon dioxide, mixing with the other reactive component, expansion and curing of the plastics material. According to the invention, the second mixture containing carbon dioxide is expanded whilst being repeatedly separated numerous times into a plurality of individual flows under the effect of frequently changing shearing speeds, which have maximum values of at least 200/sec, being imposed.

公开(公告)号：EP0907478A1

公开(公告)日：1999-04-14

申请号：EP97927040.0

申请日：1997-05-26

申请人： BAYER AG ,  Hennecke GmbH

发明人： SULZBACH, Hans-Michael ,  STEILEN, Herbert ,  RAFFEL, Reiner ,  EIBEN, Robert ,  EBELING, Wilfried

IPC分类号： B29C44 ,  C08G18 ,  C08J9 ,  B29K75 ,  B29K105

CPC分类号： C08J9/30 ,  B29C44/3446 ,  B29C44/461 ,  C08J9/122 ,  C08J2375/04

摘要： The invention relates to a process for continuous production of polyurethane slab-stock foam using carbon dioxide (40), dissolved physically under pressure, as the foaming agent. Before mixing the constituents polyhydric alcohol (36) and isocyanate (35), said carbon dioxide (40) is dissolved in the polyhydric alcohol constituent, and air or nitrogen (39) is dissolved in the isocyanate constituent. Both constituents are delivered to a mixing chamber (3) in which there is a pressure 70 to 150 % of the solution pressure of the CO2 in the polyhydric alcohol constituent. The isocyanate constituent is delivered at a pressure of at least 30 bar to the mixing chamber, and by dropping to the mixing chamber pressure is sprayed into said mixing chamber. Air or nitrogen amounting to 1 g per kg of CO2 is dissolved in the isocyanate constituent, and the mixture drops to atmospheric pressure on leaving the mixing chamber.

公开(公告)号：EP0777564A1

公开(公告)日：1997-06-11

申请号：EP95924976.0

申请日：1995-07-05

申请人： BAYER AG ,  MASCHINENFABRIK HENNECKE GmbH

发明人： EBELING, Wilfried ,  EIBEN, Robert ,  JACOBS, Gundolf ,  RABE, Hansjürgen ,  STEILEN, Herbert ,  THIEBES, Florian

IPC分类号： B29C44 ,  C08J9

CPC分类号： C08J9/122 ,  B29C44/3473 ,  B29C44/461 ,  C08J2375/04

摘要： The invention concerns a process for preparing foamed materials from two-component reactive plastics materials using carbon dioxide as expanding agent and by mixing at least one of the reactive components with carbon dioxide under pressure and generating a mixture containing liquid carbon dioxide, mixing with the other reactive component, expansion and curing of the plastics material. According to the invention, the second mixture containing carbon dioxide is expanded whilst being repeatedly separated numerous times into a plurality of individual flows under the effect of frequently changing shearing speeds, which have maximum values of at least 200/sec, being imposed.

摘要翻译： 本发明涉及一种用二氧化碳作为发泡剂并通过将至少一种反应性组分与二氧化碳在压力下混合并由此产生含有液态二氧化碳的混合物的双组分反应性塑料材料制备发泡材料的方法， 反应性组分，塑料材料的膨胀和固化。 根据本发明，含有二氧化碳的第二混合物在频繁变化的剪切速度的作用下被多次重复分离成多个单独流动，其中所述剪切速度具有至少200 /秒的最大值。

公开(公告)号：EP0907478B1

公开(公告)日：2001-10-04

申请号：EP97927040.2

申请日：1997-05-26

申请人： BAYER AG ,  Hennecke GmbH

发明人： SULZBACH, Hans-Michael ,  STEILEN, Herbert ,  RAFFEL, Reiner ,  EIBEN, Robert ,  EBELING, Wilfried

IPC分类号： B29C44/34 ,  B29C44/46 ,  C08J9/30 ,  C08J9/12

CPC分类号： C08J9/30 ,  B29C44/3446 ,  B29C44/461 ,  C08J9/122 ,  C08J2375/04

摘要： The invention relates to a process for continuous production of polyurethane slab-stock foam using carbon dioxide (40), dissolved physically under pressure, as the foaming agent. Before mixing the constituents polyhydric alcohol (36) and isocyanate (35), said carbon dioxide (40) is dissolved in the polyhydric alcohol constituent, and air or nitrogen (39) is dissolved in the isocyanate constituent. Both constituents are delivered to a mixing chamber (3) in which there is a pressure 70 to 150 % of the solution pressure of the CO2 in the polyhydric alcohol constituent. The isocyanate constituent is delivered at a pressure of at least 30 bar to the mixing chamber, and by dropping to the mixing chamber pressure is sprayed into said mixing chamber. Air or nitrogen amounting to 1 g per kg of CO2 is dissolved in the isocyanate constituent, and the mixture drops to atmospheric pressure on leaving the mixing chamber.

公开(公告)号：EP0777564B1

公开(公告)日：1998-10-07

申请号：EP95924976.4

申请日：1995-07-05

申请人： BAYER AG ,  Hennecke GmbH

发明人： EBELING, Wilfried ,  EIBEN, Robert ,  JACOBS, Gundolf ,  RABE, Hansjürgen ,  STEILEN, Herbert ,  THIEBES, Florian

IPC分类号： B29C44/46

CPC分类号： C08J9/122 ,  B29C44/3473 ,  B29C44/461 ,  C08J2375/04

摘要： The invention concerns a process for preparing foamed materials from two-component reactive plastics materials using carbon dioxide as expanding agent and by mixing at least one of the reactive components with carbon dioxide under pressure and generating a mixture containing liquid carbon dioxide, mixing with the other reactive component, expansion and curing of the plastics material. According to the invention, the second mixture containing carbon dioxide is expanded whilst being repeatedly separated numerous times into a plurality of individual flows under the effect of frequently changing shearing speeds, which have maximum values of at least 200/sec, being imposed.