Chain-extending nitrile end-capped polyimides

Patent

Description

Aromatic polyimides with nitrile end groups are chain-extended (molecular weight increased) by polymerization using Lewis acid salts as catalyst. Molecular weights are increased with little or no by-product formation. These polyimides can be shaped and formed prior to the polymerization. The aromatic polyimides appropriate for chain-extending are formed by the reaction of aromatic dianhydrides, aromatic diamines and nitrile compounds such as aminobenzyl cyanide and aminobenzonitrile.

Attributes

Attribute NameValues
Title
  • Chain-extending nitrile end-capped polyimides

Patent Number
  • US 4060515 B2

USPTO Link
Inventor
  • Gaetano Francis D'Alelio

Inventor From Local Institution
  • Gaetano Frank D'Alelio

Other Application
  • 05/558,452

Claims
  • 10

Classification (US Patent)
  • 528/125; 525/354; 525/360; 525/422; 525/436; 525/925; 525/928; 526/259; 526/263; 526/285; 526/67; 526/70; 526/71; 528/126; 528/128; 528/170; 528/172; 528/180; 528/188; 528/207; 528/208; 528/225; 528/229; 528/319; 528/322; 528/351; 528/352; 528/353;

Cooperative Patent Classification codes
  • C08G 18/6438 (20130101); C08G 73/1003 (20130101); C08G 73/1071 (20130101); C08G 73/1067 (20130101); C08G 73/1064 (20130101)

International Patent Classification codes
  • C08G 18/00 (20060101); C08G 73/00 (20060101); C08G 73/10 (20060101); C08G 18/64 (20060101); C08G 073/12 ()

Language
  • eng

Date Issued
  • 1977-11-29

Publisher
  • United States Patent and Trademark Office

Assignee
  • University of Notre Dame Du Lac

Record Visibility and Access Public
Content License
Departments and Units
Member of

Collections

Collections Featuring this Patent
Notre Dame Patents

Files

Please Note: You may encounter a delay before a download begins. Large or infrequently accessed files can take several minutes to retrieve from our archival storage system.