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Title: Polyamide thermosets

The present invention provides (1) curable polyamide monomers represented by the formula: R.sup.1 --A.sup.1 --B.sup.1 --A.sup.2 --B.sup.2 --A.sup.3 --R.sup.2 where R.sup.1 and R.sup.2 are radicals selected from the group consisting of maleimide, substituted maleimide, nadimide, substituted nadimide, ethynyl, and (C(R.sup.3).sub.2).sub.2 where R.sub.3 is hydrogen with the proviso that the two carbon atoms of (C(R.sup.3).sub.2).sub.2 are bound on the aromatic ring of A.sup.1 or A.sup.3 to adjacent carbon atoms, A.sup.1 and A.sup.3 are 1,4-phenylene and the same where said group contains one or more substituents selected from the group consisting of halo, e.g., fluoro, chloro, bromo, or iodo, nitro, lower alkyl, e.g., methyl, ethyl, and propyl, lower alkoxy, e.g., methoxy, ethoxy, or propoxy, and fluoroalkyl or fluoroalkoxy, e.g., trifluoromethyl, pentafluoroethyl and the like, A.sup.2 is selected from the group consisting of 1,4-phenylene, 4,4'-biphenyl, 2,6-naphthylene and the same where said groups contain one or more substituents selected from the group consisting of halo, e.g., fluoro, chloro, bromo, or iodo, nitro, lower alkyl, e.g., methyl, ethyl, and propyl, lower alkoxy, e.g., methoxy, ethoxy, or propoxy, and fluoroalkyl or fluoroalkoxy, e.g., trifluoromethyl, pentafluoroethyl and the like, and B.sup.1 and B.sup.2 are selected from the group consisting of --C(O)--N(H)-- and --N(H)--C(O)--, (2) thermoset polyamide compositionsmore » comprised of cured segments derived from monomers represented by the formula: R.sup.1 --A.sup.1 --B.sup.1 --A.sup.2 --B.sup.2 --A.sup.3 --R.sup.2 as described above, and curable blends of at least two of the polyamide monomers and (4) processes of preparing the curable polyamide monomers.« less
Inventors:
 [1];  [1]
  1. (Los Alamos, NM)
Issue Date:
OSTI Identifier:
869321
Assignee:
United States of America as represented by United States (Washington, DC) LANL
Patent Number(s):
US 5315011
Contract Number:
W-7405-ENG-36
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
Language:
English
Subject:
polyamide; thermosets; provides; curable; monomers; represented; formula; -a; -b; -r; radicals; selected; consisting; maleimide; substituted; nadimide; ethynyl; hydrogen; proviso; carbon; atoms; bound; aromatic; adjacent; 4-phenylene; contains; substituents; halo; fluoro; chloro; bromo; iodo; nitro; alkyl; methyl; ethyl; propyl; alkoxy; methoxy; ethoxy; propoxy; fluoroalkyl; fluoroalkoxy; trifluoromethyl; pentafluoroethyl; -biphenyl; 6-naphthylene; contain; -c; -n; thermoset; compositions; comprised; cured; segments; derived; described; blends; processes; preparing; polyamide monomers; compositions comprised; adjacent carbon; substituents selected; compositions comprise; carbon atoms; monomers represented; carbon atom; radicals selected; substituted maleimide; segments derived; curable polyamide; curable blends; cured segments; polyamide thermosets; /999/