Polyamide thermosets

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868717

Benicewicz, Brian C ^[1]; Hoyt, Andrea E ^[1]

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1. Los Alamos, NM

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.sup.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 substitutents 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 compositions 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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5198551
• OSTI ID: 868717
• Country of Publication: United States
• Language: English

Related Subjects

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
substitutents
-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
/999/525/526/528/