公开(公告)号：US20230192938A1

公开(公告)日：2023-06-22

申请号：US17918054

申请日：2021-04-15

Applicant: SMART MATERIALS LIMITED

Inventor： Keith Mario AZZOPARDI ,  Matthew Anthony XUEREB ,  Ruben GATT

IPC: C08G18/38 ,  C08G18/16 ,  C08G18/20 ,  C08G18/24 ,  C08G18/66 ,  C08G18/48 ,  C08G18/32 ,  C08G18/76 ,  C08J9/12 ,  C08J9/02

CPC classification number: C08G18/3893 ,  C08G18/165 ,  C08G18/2063 ,  C08G18/244 ,  C08G18/6677 ,  C08G18/4837 ,  C08G18/3206 ,  C08G18/7621 ,  C08J9/125 ,  C08J9/02 ,  C08G2110/0058 ,  C08G2110/0066 ,  C08G2280/00 ,  C08G2110/0083 ,  C08J2375/08 ,  C08J2205/05 ,  C08J2201/022 ,  C08J2203/10

Abstract: A method for the synthesis of an auxetic polyurethane foam with a defined cell structure and an auxetic polyurethane foam substrate obtainable by a method according to the invention. The method includes mixing a polyol reagent and a foaming reagent, forming a reaction mixture, mixing an isocyanate with the reaction mixture, compressing and/or contracting the isocyanate/reaction mixture, and allowing the compressed and/or contracted isocyanate/reaction mixture to cure.