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Polymerizing bis-maleimides
standard
posted on 2016-06-07, 00:00 authored by Gaetano Francis D'AlelioProcesses for increasing the molecular weight of bis-maleimides are provided. The bis-maleimides are reacted with certain cyclic dienes to form reversible adducts. These adducts, upon elimination of the cyclic diene, yield an extension of the bis-maleimides to higher molecular weight polymers, ultimately to thermally stable, infusible polymers. The process can be interrupted to yield tractable polymers which are also convertible to cross-linked, infusible products. Modifications of the process include preparing the adducts in the presence of aprotic solvents as well as Bronsted acid salt catalysts, and the isolation of intermediate solid products.
History
Patent Number
US 4118377 B2Other Application
05/497,490Inventor
Gaetano Francis D'AlelioInventor from Local Institution
Gaetano Frank D'AlelioAssignee
University of Notre Dame Du LacDate Modified
2016-06-07Language
- English
Claims
15Publisher
United States Patent and Trademark OfficeCooperative Patent Classification Codes
C08G 73/12 (20130101); C08G 73/127 (20130101); C08G 73/126 (20130101); C08G 73/125 (20130101)Contributor
Gaetano Frank D'AlelioInternational Patent Classification Codes
C08G 73/00 (20060101); C08G 73/12 (20060101); C08G 073/12 ()US Patent Classification Codes
526/236; 526/234; 526/256; 526/258; 526/262; 526/270; 526/89;Usage metrics
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