Ether and ester oligomers with multidimensional morphology

Details Ether and ester oligomers with multidimensional morphology Ether and ester oligomers with multidimensional morphology

1994-06-30

1996-08-27

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528174, 528190, 528191, 528192, 528193, 528196, 528208, 528272, 528288, C08G 802, C08G 6302, C08G 6342, C08L 6700

Patent

active

055502040

ABSTRACT:
Crosslinkable, polyaromatic, polyether or polyester oligomers can have glass transition temperatures above 900.degree. F. while exhibiting desirable toughness for aerospace applications and ease of processing. A plurality (i.e. three or more) of generally linear aryl arms extend outwardly like spokes from a central aromatic hub through ether or ester linkages. Each spoke usually includes electronegative linkages, and is capped with one or two crosslinking functionalities (i.e. unsaturated hydrocarbon sites) which may be thermally or chemically activated to complete the advanced composite during curing. Among other methods, linear and multidimensional polyether oligomers are synthesized using nitrophthalic anhydride or halophthalic anhydride, dialcohols, or polyols, diamines, and suitable end caps.

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Worthy Chem & Eng. News (Feb. 22, 1988) pp. 19-21.

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