Research/Patents/US 5708105
US 5708105

DI-(ALKEN-1-YL)-SUBSTITUTED BORINIC ACIDS AND BORINATES AS OXIDATION INHIBITORS FOR CARBON COMPOSITES

Assignee

AEROJET-GENERAL CORPORATION

Filed

Jun 2, 1989

Granted

Jan 13, 1998

Location

FAIR OAKS CA US

Abstract

Resins and carbon-carbon composites are formed from di(alken-1-yl) borinic acids and borinates, either as monomers or as nonpolymerizing additives in a monomer mixture, with the effect of sharply increasing the oxidative stability of the cured product. The compounds have the formula ##STR1## in which R1, R2, R3, R4 and R5 are H, C1 -C6 alkyl, C2 -C6 alkenyl, C2 -C6 alkynyl, C3 -C7 cycloalkyl, C5 -C7 cycloalkenyl, aryl, (C1 -C6 alkyl)-substituted aryl, (C2 -C6 alkenyl)-substituted aryl, or (C2 -C6 alkynyl)-substituted aryl, at least one of R1, R2, R3, R4 and R5 being other than H.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Feb 23, 1990

Rescinded

Jun 18, 1997

Duration

7 years, 3 months

Inventor

  • 1STEPHEN J. BACKLUND
Back to patent indexSource: USPTO 35 USC §181 secrecy order records