Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1995-10-27
1997-05-27
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528354, 528359, 528361, 528365, 528370, 528371, C07K 100
Patent
active
056333420
ABSTRACT:
A method is provided for the synthesis of environmentally degradable block copolymers which includes the sequential polymerization of polymer-forming materials in the presence of one or more polymerization reaction accelerants and catalysts. The accelerants are a class of hydrogen-labile compounds which act as polymerization initiators and accelerate the polymerization rate significantly. The environmentally degradable block copolymers produced include those comprising segments of polymers of alkylene oxides, trimethylene carbonates, lactones and cyclic esters of hydroxycarboxylic acids.
REFERENCES:
patent: 4137921 (1979-02-01), Okuzumi et al.
patent: 4157437 (1979-06-01), Okuzumi et al.
patent: 4243775 (1981-01-01), Rosensaft et al.
patent: 4300565 (1981-11-01), Rosensaft et al.
patent: 4429080 (1984-01-01), Casey et al.
patent: 4605730 (1986-08-01), Shalaby et al.
patent: 4643191 (1987-02-01), Bezwada et al.
patent: 4653497 (1987-03-01), Bezwada et al.
patent: 4700704 (1987-10-01), Jamiolkowski et al.
patent: 4788979 (1988-12-01), Jarrett et al.
patent: 4838267 (1989-06-01), Jamiolkowski et al.
patent: 5028667 (1991-07-01), McLain et al.
patent: 5080665 (1992-01-01), Jarrett et al.
patent: 5210108 (1993-05-01), Spinu et al.
patent: 5252701 (1993-10-01), Jarrett et al.
patent: 5342395 (1994-08-01), Jarrett et al.
patent: 5470340 (1995-11-01), Bezwada et al.
A. Hamitou, et al., "Soluble Bimetallic .mu.-Oxoalkoxides. IX. .epsilon.-Caprolactone and .beta.-Propiolactone Block Copolymerization", Journal of Polymer Science, vol. 15, pp. 1035-1041 (1977).
X.D. Feng et al., "Synthesis and Evaluation of Biodegradable Block Copolymers of .epsilon.-Caprolactone and D L-Lactide", Journal of Polymer Science, vol. 21, pp. 593-600 (1983).
C.X. Song et al., "Synthesis of ABA Triblock Copolymers of .epsilon.-Caprolactone and DL-Lactide", Macromolecules, vol. 17, pp. 2764-2767 (1984).
Grijpma, et al., "Star-shaped polylactide-containing block copolymers", Makromol. Chem. Rapid Commun., vol. 14, pp. 155-161 (1993).
Grijpma, et al., "Rubber Toughening of Poly(Lactide) by Blending and Block Copolymerization", Polymer Engineering and Science, vol. 34, No. 22, pp. 1674-1684 (1994).
Joziasse, et al., "Supertough poly(lactide)s", Polymer Bulletin, vol. 33, pp. 599-605 (1994).
L ofgren, et al., "Synthesis and Characterization of Biodegradable Homopolymers and Block Copolymers Based on 1,5-Dioxepan-2-one", Macromolecules, vol. 27, No. 20, pp. 5556-5562 (1994).
Dijkstra, et al., "Block Copolymers of L-Lactide, D-Lactide and .epsilon.-Caprolactone", 17th Annual Meeting of the Society for Biomaterials, p. 184, (1991).
Zhang, et al., "Mechanism of Lactide Polymerization in the Presence of Stannous Octoate: The Effect of Hydroxy and Carboxylic Acid Substances", Journal of Polymer Science, Part A, Polymer Chemistry, vol. 32, pp. 2965-2970 (1994).
Chen Xiaomao
Schilling Kevin H.
Verser Dan W.
Chronopol, Inc.
Marquis Melvyn I.
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