Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1994-11-09
1996-10-08
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528354, 521 48, C08G 6306
Patent
active
055632394
ABSTRACT:
Disclosed is a novel process for the production of poly(3-hydroxyalkanoates) through the condensation polymerization of esters of 3-hydroxyalkanoic acids at a temperature of about 90.degree. to 200.degree. C. in the presence of a titanium catalyst. Also is disclosed a novel composition that is a poly(3-hydroxyalkanoate) containing predominantly carboxylic ester end groups.
REFERENCES:
patent: 5281691 (1994-01-01), Hubbs et al.
patent: 5334698 (1994-08-01), Witholt et al.
IARC Monographs on the Evaluation of the Carcinogenic Risk of Chemicals in Man: Betabutyrolactone, VII, 225 (1976).
Y. Hori et al. in Macromolecules, V26, 5533 (1993).
D. Seebach et al., Angew. Chem. Int. Ed. Engl., V32, p. 487, (1993).
N. C. Billingham et al., J. Organometal. Chem., v. 341, p. 84, (1988).
M. Bodanszky in "Active Esters in the Peptide Synthesis", pp. 105-196, The Peptides, 1, E. Gross, J. Meienhofer, editors, Academic Press, New York, New York, 1981.
L. M. Jackman, S. Sternhell, Nuclear Magnetic Resonance Spectroscopy in Organic Chemistry, Second Edition, p. 133, Pergamon Press, New York, N.Y., 1969.
T. Harada and Y. Izumi, Chemistry Letters, 1195 (1978).
Makromol Chem, Rapid Commun. 14, 783-790 (1993) Synthesis of biodegradable polyesters by polycondensation of methyl (R)-3-hydroxybutyrate and methyl (R)-3-hydroxy-valerate Kobayashi et al.
Harrison Marti N.
Hubbs John C.
Eastman Chemical Company
Gwinnell Harry J.
Michl Paul R.
Montgomery Mark A.
Truong Duc
LandOfFree
Composition and process for the production of poly(3-hydroxyalka does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition and process for the production of poly(3-hydroxyalka, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition and process for the production of poly(3-hydroxyalka will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-58234