US4537947.pdf (2.41 MB)
Chain-extending functional polyimides by dipole reactions
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posted on 2016-06-07, 00:00 authored by Gaetano Francis D'AlelioAromatic polyimides with various functional end-groups such as --CH.dbd.CH.sub.2, --C.tbd.CH, --CN and --CHO are chain-extended (molecular weight increased) by reacting the functional groups with aromatic bis-dipoles. A representative bis-dipole is 1,4-benzene-dinitrile oxide. These polyimides can be shaped and formed prior to chain extending. The aromatic polyimides appropriate for chain-extending are formed by the reaction of aromatic dianhydrides, aromatic amines and monoamines which contain the functional groups.
History
Patent Number
US 4537947 B2Other Application
05/558,447Inventor
Gaetano Francis D'AlelioInventor from Local Institution
Gaetano Frank D'AlelioAssignee
University of Notre Dame Du LacDate Modified
2016-06-07Language
- English
Claims
26Publisher
United States Patent and Trademark OfficeCooperative Patent Classification Codes
C08G 18/6438 (20130101); C08G 73/1003 (20130101); C08G 73/1071 (20130101); C08G 73/1067 (20130101); C08G 73/1064 (20130101)Contributor
Gaetano Frank D'AlelioInternational Patent Classification Codes
C08G 18/00 (20060101); C08G 73/00 (20060101); C08G 73/10 (20060101); C08G 18/64 (20060101); C08G 020/32 ()US Patent Classification Codes
525/424; 428/458; 521/157; 525/421; 525/426; 525/427; 525/432; 525/436; 528/127; 528/128; 528/172; 528/185; 528/188; 528/226; 528/321; 528/331; 528/481;Usage metrics
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