Accession Number : ADD012248

Title :   Method for making Heterocyclic Block Copolymer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Tsai,Tsu-Tzu ; Arnold,Fred E

Report Date : 25 Mar 1986

Pagination or Media Count : 5

Abstract : Thermally stable aromatic heterocyclic block copolymers are prepared by reacting a diamino monomer and terephthalic acid to form a carboxy-terminated rigid rod segment and then polymerizing a carboxy-monoamine monomer therewith to form flexible segments grafted onto the rigid rod segments.

Descriptors :   *PATENTS, *BLOCK COPOLYMERS, *SYNTHESIS(CHEMISTRY), HETEROCYCLIC COMPOUNDS, AROMATIC COMPOUNDS, THERMAL STABILITY, AMINES, MONOMERS, PHTHALIC ACIDS, POLYMERIZATION, CARBOXYL GROUPS

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE