公开(公告)号：US5034499A

公开(公告)日：1991-07-23

申请号：US181233

申请日：1988-04-13

申请人： Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Yong C. Zheng ,  Shian S. Wang

发明人： Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Yong C. Zheng ,  Shian S. Wang

IPC分类号： C07D321/06 ,  C07D493/04 ,  C08G2/00 ,  C08G2/10 ,  C08G2/18 ,  C08G4/00 ,  C08G18/00 ,  C08G18/56 ,  C08G59/20 ,  C08G77/42

CPC分类号： C08G4/00 ,  C07D321/06 ,  C08G18/003 ,  C08G18/56 ,  C08G2/18 ,  C08G77/42

摘要： Acetal copolymers of trioxane with epoxy functional groups are obtained by copolymerizing trioxane with 5,6-epoxy-1,3-dioxepane. The epoxide group in the polymer chain provides a highly reacting functional group for further modification. Acetal copolymers with backbone epoxide groups exhibit toughness and thermal stability. The backbone epoxide groups can also be aminated in a one step hydrolysis-amination process.

公开(公告)号：US4906728A

公开(公告)日：1990-03-06

申请号：US181237

申请日：1988-04-13

申请人： Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Rose Pesce ,  Shian S. Wang

发明人： Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Rose Pesce ,  Shian S. Wang

IPC分类号： C08G65/16 ,  C07D321/06 ,  C08G4/00 ,  G03F7/039

CPC分类号： G03F7/039 ,  C07D321/06 ,  C08G4/00

摘要： The invention concerns a method for producing an acetal copolymer containing backbone bromo-functional groups comprising copolymerizing trioxane with 5,6,-dibromo-1,3-dioxepene. The invention also concerns methods of modifying acetal copolymers containing bromo-functional groups and the copolymers produced by the methods of the invention.

公开(公告)号：US4900783A

公开(公告)日：1990-02-13

申请号：US181047

申请日：1988-04-13

申请人： Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Rose Pesce ,  Shian S. Wang

发明人： Nan-Loh Yang ,  Andrew Auerbach ,  James L. Paul ,  Rose Pesce ,  Shian S. Wang

IPC分类号： C08G65/16 ,  C07D321/04 ,  C08F283/06 ,  C08G2/10 ,  C08G2/18 ,  C08G4/00 ,  C08G65/06 ,  C08G65/26

CPC分类号： C08G4/00 ,  C07D321/04 ,  C08G2/18

摘要： Acetal copolymers of trioxane and 1,3-dioxep-5-ene having a high degree of crystallinity and specific mole percent incorporations of 1,3-dioxep-5-ene are synthesized.The invention also provides a process for producing highly crystalline acetal copolymers by copolymerizing triozane and 1,3-dioxep-5-ene and precipitating the copolymer product from solution.The copolymers show much improved stability against halogen degradation.