Copolymers of 1,4-dioxepan-2-one and 1,5,8,12-tetraoxacyclotetra

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

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Details

428357, 428394, 428395, 428480, 525411, 525415, 525450, 528361, 606228, 606230, 606231, C08G 6308, C08G 63676, A61L 1700

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active

054420326

ABSTRACT:
This invention provides various copolymers comprising a repeating unit of the chemical formula:

REFERENCES:
patent: 4052988 (1977-10-01), Doddi et al.
patent: 4190720 (1980-02-01), Shalaby
patent: 4470416 (1984-09-01), Kafrawy
patent: 5080665 (1992-01-01), Jarrett et al.
Synthesis of Polylactides, Polyglycolides and Their Copolymers, Jan Neiuwenhuis, Clinical Materials 0267 10 (1992) pp. 59-67;
Determination of the Conformation of 1,4-Diheterocyclanes. Annikki Partanen and Pertti Ayras, Finn. Chem. Lett (1977) pp. 208-212.
Polymerization of 1,5-Dioxepan-2-One. 1. Synthesis and Characterization of the Monomer 1,5-Dioxepan-2-one and Its Cyclic Dimer 1,5,8,12-Tetraoxacyclotetradecane-2,9-dione, Torbjorn Mathisen and Ann-Christine Albertsson, American Chemical Society (1989) pp. 3838-3842.
Polymerization of 1,5-Dioxepan-2-one. 2. Polymerization of 1,5-Dioxepan-2-one and Its Cyclic Dimer, Including a New Procedure for the Synthesis of 1,5-Dioxepan-2-one, Torbjorn Mathisen, Kristina Masus, and Ann-Christine Albertson, American Chemical Society (1989) pp. 3842-3846.
A New Synthesis of 1,5-Dioxepan-2-One. A. Kafrawy, F. V. Mattei, and S. W. Shalaby, Journal of Polymer Science, vol. 25, (1987) pp. 2629-2630.
Cyclization during Polyesterification: Isolation of an 18-Member Ring Compound from Reaction of Phthalic Anhydride with 2,2-Dimethyl-1-2,Propanediol Gang-Fung Chen and Frank N. Jones, Journal of Applied Polymer Science, vol. 41 (1990) pp. 2517-2520.
Copolymers of 1,5-Dioxepan-2-One and L-or D.L-Dilactide-Synthesis and Characterization. Ann-Christine Albertsson and Anders Lofgren, Makromol. Chem., Marcromol. Symp. 53, (1992) pp. 221-131.

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