Multifunctional crosslinking agent, crosslinked polymer, and method of making same
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsLoon-Seng Tan, David Huabin Wang
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Abstract
A multifunctional crosslinking agent, a crosslinked polymer, and a method of making the same are disclosed. The multifunctional crosslinking agent, which may be used to crosslink amine-terminated polyamides, polyimides, or poly(amide-imide)s, includes three or four anhydride functional groups. The multifunctional crosslinking agent may be defined by a general chemical formula (I): (Z—Ar—)n—W, wherein W represents an anhydride functional group that is directly or indirectly bonded to Ar; Ar represents an aryl group that is directly bonded to W; and n is equal to 3 when W is P═O or N, or n is equal to 4 when W is Si or a carbon moiety.
Claims20
A multifunctional crosslinking agent comprising a plurality of anhydride functional groups, and defined by a chemical formula (I):
- (Z—Ar)n—W (I)
- wherein Z represents an anhydride functional group that is directly bonded to Ar;
- Ar represents an aryl-ether group that is directly bonded to W;
- and
- n is equal to 3 when W is P═O or N, or n is equal to 4 when W is Si or a carbon moiety.
Dependencies are inferred from the claim text.