Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1974-03-15
1976-04-27
Lee, Lester L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 50, C08G 6538, C08G 6540
Patent
active
039534006
ABSTRACT:
Described herein are melt-processable, solvent resistant polymers comprised of repeating units of formula ##SPC1##
Having a tensile elongation to break of at least about 50% at room temperature and mean inherent viscosity within the range from about 0.8 to about 1.65. The polymers, which are suitable for high temperature resistant wire insulation, are prepared, e.g., by the hydrogen fluoride-boron trifluoride catalyzed polymerization of a p-phenoxybenzoyl moiety-containing monomer (e.g., p-phenoxybenzoyl halide, p-phenoxybenzoic acid, or C.sub.1 -C.sub.3 alkyl p-phenoxybenzoates) in the presence of a capping agent whose reactivity to acetylation is greater than about 150 relative to benzene reactivity of 1. Wet workup and spray drying techniques are described, the latter preferably including dilution of hydrogen fluoride with liquid SO.sub.2, either before or after polymerization.
REFERENCES:
patent: 3441538 (1969-04-01), Marks
Lee Lester L.
Raychem Corporation
LandOfFree
Polyketones and methods therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyketones and methods therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyketones and methods therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2001309