Chain-extending amine end-capped polyimides

Patent

Description

Aromatic polyimides with amine end groups are chain-extended (molecular weight increased) by reacting them with aromatic di- or tri- anhydrides. The reaction can either be at a temperature above the melting point of the reactants or in solvents for the reactants. The polyimides can be shaped and formed prior to chain-extending.

Attributes

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

Patent Number
  • US 4058505 B2

USPTO Link
Inventor
  • Gaetano Francis D'Alelio

Inventor From Local Institution
  • Gaetano Frank D'Alelio

Other Application
  • 05/558,448

Claims
  • 18

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; 528/179; 528/188; 528/207; 528/208; 528/222; 528/229; 528/317; 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 073/10 ()Field of Search:;260/47CP,49,65,78TF,63R,63N,50

Language
  • eng

Date Issued
  • 1977-11-15

Publisher
  • United States Patent and Trademark Office

Assignee
  • University of Notre Dame Du Lac

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