Dimensional, crosslinkable oligomers

Details Dimensional, crosslinkable oligomers Dimensional, crosslinkable oligomers

1987-01-05

1993-05-11

Ceperley, Mary E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548431, 548433, 548462, 548465, 548521, C07D40312, C07D51900

Patent

active

052102130

ABSTRACT:
Multidimensional oligomers of the present invention are surprisingly useful for advanced composites because each generally has a use temperature greatly in excess of its curing temperature. The oligomers have essentially no arms, and comprise crosslinking phenylimide end caps condensed directly onto an aromatic hub (preferably, phenyl) through "commodity" polymeric linkages, such as amide, diimide, ether, or ester. For example, p-nadicimidobenzoylchloride can be condensed with triaminobenzene to yield a multidimensional, crosslinking amide oligomer. Short chains of ether/carbonyl aromatic chains can be included, if desired. Methods for making these high-performance oligomers with ether/carbonyl aromatic chains use an Ullmann ether synthesis followed by a Friedel Craft reaction.

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W. Worthy, Chem. and Eng. News, Feb. 22, 1988 pp. 19-21.
D. Tomalia et al., Polymer Journal, vol. 17, No. 1, pp. 117-132 (1988).

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