Accession Number : ADD011971

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 : 01 Oct 1985

Pagination or Media Count : 4

Abstract : This patent describes thermally stable automatic heterocyclic block copoymers as prepared by reacting a diamino monomer and terephthalic acid to form a carboxy-terminated rigid rod segment and then polymerizing a carbonxy-monoamine monomer therewith to form flexible segments grafted onto the rigid rod segments.

Descriptors :   *PATENTS, *BLOCK COPOLYMERS, *HETEROCYCLIC COMPOUNDS, *SYNTHESIS(CHEMISTRY), *AROMATIC COMPOUNDS, POLYMERIZATION, PHTHALIC ACIDS, CARBOXYL GROUPS, FLEXIBLE MATERIALS, VISCOSITY

Subject Categories : Polymer Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE