公开(公告)号：US09926421B2

公开(公告)日：2018-03-27

申请号：US14418237

申请日：2013-07-26

申请人： Covestro Deutschland AG

发明人： Reinhard Albers ,  Torsten Heinemann ,  Stephanie Vogel ,  Michael Loof ,  Zhihong Gu ,  Atsushi Urano ,  Suk Sangjo ,  Zhao Shihu

IPC分类号： C08J9/14 ,  B29C44/38 ,  B29C44/42 ,  C08J9/00 ,  B29C44/18 ,  B29C44/34 ,  C08G18/40 ,  C08G18/48 ,  B29C44/58 ,  B29C44/60 ,  C08G101/00 ,  B29L31/00 ,  B29K75/00

CPC分类号： C08J9/0023 ,  B29C44/18 ,  B29C44/3403 ,  B29C44/428 ,  B29C44/588 ,  B29C44/60 ,  B29K2075/00 ,  B29K2995/0063 ,  B29L2031/7622 ,  C08G18/4018 ,  C08G18/482 ,  C08G2101/00 ,  C08G2101/005 ,  C08J9/0014 ,  C08J9/0019 ,  C08J9/141 ,  C08J2201/022 ,  C08J2375/04

摘要： The present invention is related to a method for the production of polyurethane foam, comprising the steps of: providing an isocyanate-reactive component A comprising a polyol component A1 which further comprises a physical blowing agent T; combining at least the isocyanate-reactive component A and an isocyanate component B, thereby obtaining a polyurethane reaction mixture; providing the polyurethane reaction mixture in a cavity (11); and reducing the pressure within the cavity (11) to a pressure lower than ambient pressure; characterized in that the cavity (11) is ventilated to ambient pressure before the gel time of the polyurethane reaction mixture is reached.

公开(公告)号：US20170096539A1

公开(公告)日：2017-04-06

申请号：US15332950

申请日：2016-10-24

申请人： Covestro Deutschland AG

发明人： Reinhard Albers ,  Torsten Heinemann ,  Stephanie Vogel ,  Michael Loof ,  Zhihong Gu ,  Atsushi Urano ,  Suk Sangjo ,  Zhao Shihu

IPC分类号： C08J9/14 ,  C08G18/48 ,  C08G18/42 ,  C08G18/18

CPC分类号： C08J9/141 ,  B29C44/3403 ,  B29K2075/00 ,  B29K2105/0061 ,  B29K2105/0094 ,  C08G18/18 ,  C08G18/4018 ,  C08G18/4247 ,  C08G18/4816 ,  C08G18/4829 ,  C08G18/7664 ,  C08G2101/0025 ,  C08G2101/005 ,  C08J9/12 ,  C08J2201/022 ,  C08J2203/14 ,  C08J2205/044 ,  C08J2205/10 ,  C08J2375/08

摘要： The present invention is related to a method for the production of polyurethane foam, comprising the steps of: (1) providing an isocyanate-reactive component A comprising a polyol component A1 which further comprises a physical blowing agent T; (2) combining at least the isocyanate-reactive component A and an isocyanate component B, thereby obtaining a polyurethane reaction mixture; (3) providing the polyurethane reaction mixture in a cavity (11); and (4) reducing the pressure within the cavity (11) to a pressure lower than ambient pressure. The method is characterized in that the cavity (11) is ventilated to ambient pressure before the gel time of the polyurethane reaction mixture is reached.