发明授权
US6022912A Expansion of polymeric microspheres insitu in a rigid PUR/PIR foam
formulation using a twin screw extruder
失效
使用双螺杆挤出机将刚性PUR / PIR泡沫配制物中的聚合物微球膨胀
- 专利标题： Expansion of polymeric microspheres insitu in a rigid PUR/PIR foam formulation using a twin screw extruder
- 专利标题（中）： 使用双螺杆挤出机将刚性PUR / PIR泡沫配制物中的聚合物微球膨胀
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申请号： US158209申请日： 1998-09-22
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公开(公告)号： US6022912A公开(公告)日： 2000-02-08
- 发明人: Keith G. Spitler , Rick L. Archey , Carl E. Holsinger , Leslie J. Vescio
- 申请人： Keith G. Spitler , Rick L. Archey , Carl E. Holsinger , Leslie J. Vescio
- 申请人地址： PA Pittsburgh
- 专利权人： Bayer Corporation
- 当前专利权人： Bayer Corporation
- 当前专利权人地址： PA Pittsburgh
- 主分类号： B29B7/46
- IPC分类号： B29B7/46 ; B29B7/88 ; B29C70/66 ; B29K101/00 ; B29K105/04 ; C08G18/00 ; C08G18/08 ; C08G18/42 ; C08G101/00 ; C08J9/224 ; C08J9/32 ; B29D31/00 ; B29C35/00 ; C08J3/00 ; C08K9/00 ; C08L75/00
摘要：
The present invention relates to a process for producing a dispersion of polymeric microspheres in a polyol comprising expanding 1 to 70% by weight of polymeric beads in a polyol with a twin screw extruder to simultaneously mix and expand the beads to create a uniform dispersion of the microspheres in the polyol such that the wetting of the microspheres by the polyol is maximized.
公开/授权文献
- US5427447A Drawer unit 公开/授权日：1995-06-27
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