专利检索 ap:("VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.") AND inv:"Nicholas Chartrain" 第 1 页

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发明授权
Compositions and methods of additive manufacturing of aromatic thermoplastics and articles made therefrom 有权

公开(公告)号：US11618832B2

公开(公告)日：2023-04-04

申请号：US16325991

申请日：2017-08-17

申请人： VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.

发明人： Maruti Hegde , Timothy E. Long , Viswanath Meenakshisundaram , Christopher B. Williams , Nicholas Chartrain

IPC分类号： C08F2/46 , C08F2/50 , C08G61/04 , C09D11/101 , B33Y70/00 , C09D11/102 , B33Y10/00 , B29C64/135

摘要： Polymer resins for the vat photopolymerization of thermoplastics are provided, in particular for the vat photopolymerization of thermoplastics with exception thermal stability and mechanical properties. In some aspects, the polymer resins are prepared by ring opening of an aromatic dianhydride with an alcohol containing an acrylate or methacrylate to produce a photocrosslinkable diacid monomer; conversion of the photocrosslinkable diacid monomer to a photocrosslinkable diacyl chloride; and polymerization of the photocrosslinkable diacyl chloride with an aromatic diamine to produce a photocrosslinkable precursor polymer. Upon crosslinking and drying, a thermal imidization can yield aromatic polyimide polymers with high yield and with micron-scale structural resolution.