公开(公告)号：WO2022090869A1

公开(公告)日：2022-05-05

申请号：PCT/IB2021/059620

申请日：2021-10-19

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： KEMPF, Michael ,  APELDORN, Thomas ,  D'HOLLANDER, Stijn ,  GIESE, Maja ,  MOOS, Martin Jürgen ,  BRUECKMANN, Nadine

IPC分类号： C08J9/12 ,  C08F290/04 ,  C09J7/26 ,  C09J7/38 ,  C09J133/06 ,  C09J151/06

摘要： A foamable precursor of a microcellular foamed polymeric composition, wherein the foamable precursor comprises: a) the graft copolymerization reaction product of a copolymerizable monomer mixture comprising: i. at least one (meth)acrylate comonomer; and ii. at least one copolymerizable macromonomer comprising an oligomeric backbone selected from the group consisting of thermoplastic oligomeric material having a Vicat softening temperature greater than 20°C, when measured according to test method ASTM D1525-09, wherein the copolymerizable macromonomer further comprises a copolymerizable ethylenically unsaturated functional group at one terminal position of the oligomeric backbone; and b) optionally, a physical foaming agent.