Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1976-05-13
1978-01-10
Lee, Lester L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 75, 260 9, 260 40R, 260 49, C08G 6306, C08G 6318
Patent
active
040678520
ABSTRACT:
A wholly aromatic polyester is provided which unlike the aromatic polyesters normally encountered in the prior art is not intractable or difficultly tractable and readily undergoes melt processing with ease. The aromatic polyester of the present invention consists essentially of the recurring units (a) p-oxybenzoyl moiety , (b) 2,5-dicarboxynaphthalene moiety, and (c) symmetrical dioxy aryl moiety (as defined), and is free of units which possess ring substitution. The resulting polyester exhibits a melting point below approximately 425.degree. C., preferably below 350.degree. C., and most preferably below approximately 330.degree. C. The ability of the wholly aromatic polyester to readily undergo melt processing can be attributed to its atypical inherent propensity to form a thermotropic melt phase which is exhibited in the absence of ring substitution. The particularly effective route for forming the wholly aromatic polyester is via a slurry polymerization technique (as defined).
REFERENCES:
patent: 3637595 (1972-01-01), Cottis et al.
patent: 3890256 (1975-06-01), McFarlane et al.
Celanese Corporation
Lee Lester L.
LandOfFree
Melt processable thermotropic wholly aromatic polyester containi does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Melt processable thermotropic wholly aromatic polyester containi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Melt processable thermotropic wholly aromatic polyester containi will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2270628