Chain-extending amine end-capped polyimides

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posted on 2016-06-07, 00:00 authored by Gaetano Francis D'Alelio

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.

History

Patent Number

US 4058505 B2

Other Application

05/558,448

USPTO Link

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=/netahtml/PTO/search-adv.htm&r=117&f=G&l=50&d=PTXT&s1=4058505&p=3&OS=4058505&RS=4058505

Inventor

Gaetano Francis D'Alelio

Inventor from Local Institution

Gaetano Frank D'Alelio

Assignee

University of Notre Dame Du Lac

Date Modified

2016-06-07

Language

English

Claims

18

Publisher

United States Patent and Trademark Office

Cooperative 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'Alelio

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

US Patent Classification Codes

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;

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CC BY 4.0

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