Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1993-04-02
1994-05-17
Cintins, Marianne M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568332, 568 30, 568 34, 568928, 570128, C07C20506, C07C31714, C07C 49794, C07C 2208
Patent
active
053129946
ABSTRACT:
A composition of matter having the general structure: ##STR1## (wherein X is F, Cl, or NO.sub.2, and Y is CO, SO.sub.2 or C(CF.sub.3).sub.2) is employed to terminate a nucleophilic reagent, resulting in the exclusive production of phenylethynyl terminated reactive oligomers which display unique thermal characteristics. A reactive diluent having the general structure: ##STR2## (wherein R is any aliphatic or aromatic moiety) is employed to decrease the melt viscosity of a phenylethynyl terminated reactive oligomer and to subsequently react therewith to provide a thermosetting material of enhanced density. These materials have features which make them attractive candidates for use as composite matrices and adhesives.
REFERENCES:
patent: 5138028 (1992-08-01), Paul et al.
P. M. Hergenrother., "Acetylene-Terminated Prepolymers", Encycl. Polym. Sci. Eng. vol. 1, 2nd edition, John Wiley & Sons, Inc. New York, N.Y. (1985), pp. 61-86.
G. Lucotte, et al., "Ethynyl-Terminated Polyethers from New End-Capping Agents. II, End-Chain Functionalization through Nitro Displacement", J. Polym. Sci., Part A: Polym. Chem., vol. 29, (1991), pp. 897-903.
B. Delfort et al., "Ethynyl-Terminated Polyethers from New End-Capping Agents: Synthesis and Characterization", J. Polym. Sci., Part A: Polym. Chem., vol. 28, (1990), pp. 2451-2464.
Bryant Robert G.
Hergenrother Paul M.
Jensen Brian J.
Cintins Marianne M.
Helfrich George F.
Page Margaret J.
The United States of America as represented by the Administrator
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