公开(公告)号：US11939446B2

公开(公告)日：2024-03-26

申请号：US16311258

申请日：2017-07-11

申请人： Akzo Nobel Chemicals International B.V.

发明人： Christina Nyholm ,  Per Anders Restorp ,  Anders Törncrona ,  Helena Bergenudd ,  Andreas Sundblom ,  Bo Andreasson

IPC分类号： C08J9/20 ,  B01D39/04 ,  B01J13/06 ,  B01J13/14 ,  B01J13/16 ,  C08J9/14 ,  C08J9/22 ,  C08K3/36 ,  C08K9/06

CPC分类号： C08J9/20 ,  B01D39/04 ,  B01J13/06 ,  B01J13/14 ,  B01J13/16 ,  C08J9/141 ,  C08J9/22 ,  C08K3/36 ,  C08K9/06 ,  C08J2203/22 ,  C08J2300/22 ,  C08J2333/12 ,  C08J2333/20 ,  C08J2339/06

摘要： The invention relates to a process for the manufacture of thermally expandable thermoplastic microspheres. The process comprises, providing a mixture of monomeric materials suitable for polymerisation to form a thermoplastic polymer and at least one blowing agent, providing to the mixture a colloidal silica that is surface-modified with at least hydrophobic organosilane groups and forming an emulsion. A polymerisation is performed to form the thermally expandable thermoplastic microspheres. The invention further relates to thermally expandable thermoplastic micro spheres, expanded micro spheres and their use in the manufacture of products.