Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1990-09-06
1993-01-19
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524310, 524315, 524317, 524320, 528354, 528361, 523124, C08K 510
Patent
active
051807653
ABSTRACT:
Environmentally biodegradable compositions of poly(lactic acid) plasticized with lactic acid, D-lactide, L-lactide, meso D,L-lactide, racemic D,L-lactide, oligomers of lactic acid, oligomers of lactide, derivatives of oligomers of lactic acid, or various mixtures thereof; the compositions are suitable replacements of thermoplastic polymer compositions; the compositions are useful for pliable films and other packaging applications conventionally served by polyethylene and other nondegradable thermoplastics; homopolymers or copolymers of D-lactic acid, L-lactic acid, D-lactide, L-lactide, meso D,L-lactide, and/or racemic D,L-lactide having properties similar to other known polymers may be prepared by varying the ratios of monomer and polymerization conditions, the amount and type of plasticizer in the polymer and process conditions; additives and subsequent treatment are also used to modify properties.
REFERENCES:
patent: 1995970 (1935-03-01), Dorough
patent: 2396994 (1946-03-01), Filachione et al.
patent: 2438208 (1948-03-01), Filachione et al.
patent: 2703316 (1955-03-01), Schneider
patent: 2758987 (1956-08-01), Salzberg
patent: 2951828 (1960-09-01), Zeile et al.
patent: 3268487 (1966-08-01), Klootwijk
patent: 3531561 (1970-09-01), Trehu
patent: 3565869 (1971-02-01), De Prospero
patent: 3636956 (1972-01-01), Schneider
patent: 3755558 (1973-08-01), Scribner
patent: 3773919 (1973-11-01), Boswell et al.
patent: 3982543 (1976-09-01), Schmitt et al.
patent: 4137921 (1979-02-01), Okuzumi et al.
patent: 4279249 (1981-07-01), Vert et al.
patent: 4534349 (1985-08-01), Barrows
patent: 4539981 (1985-09-01), Tunc
patent: 4603695 (1986-08-01), Ikada et al.
patent: 4683288 (1987-07-01), Tanaka et al.
patent: 4719246 (1988-01-01), Murdoch et al.
patent: 4728721 (1988-03-01), Yamamoto et al.
patent: 4789726 (1988-12-01), Hutchinson
patent: 4797468 (1989-01-01), De Vries
patent: 4898186 (1990-02-01), Ikada et al.
patent: 5076983 (1991-12-01), Loomis et al.
"The Effect of the Addition of Low Molecular Weight Poly(DL-Lactide) on Drug Release from Biodegradable Poly(DL-Lactide) Drug Delivery Systems"; Bodmeier et al.; Int. J. Pharmaceutics, 51, 1-8 (1989).
Production and characteristics of high molecular especially optically active polyesters of lactic acid, an investigation of the stereochemistry of macromolecular compounds; Kleine H. H.; Doctoral Dissertation, University of Munich, West Germany; 95 pages, (1957).
Uber hochmolekulare, insbesondere optisch aktive Polyester der Milchsaure, ein Beitrag zur Stereochemie makromolekularer Verbindungen (High Molecular Weight, Especially Optically Active Polyesters of Lactic Acid: An Investigation of the Stereochemistry of Macromolecular Compounds); Kleine and Kleine; Macromolekulare Chemie, vol. 30, pp. 23-38, (1959)-Translation Provided.
Preparation of Some Polyesters by Organometallic-catalyzed Ring Opening Polymerization; Tsuruta, Teiji et al; Makromolekulare Chemie, 75, 1964; pp. 211-214.
Polylactic Acid for Surgical Implants; Kulkarni, R. K. et al; Arch. Surg., vol. 93, Nov. 1966, pp. 839-843.
Some Optically Active Polyesters and Polyamides; Schulz, Rolf; IUPAC International Symposium on Macromolecular Chemistry, Budapest 1969, pp. 185-212.
Biodegradable Poly(lactic acid) Polymers; Kulkarni, R. K. et al; J. Biomed. Mater. Res. vol. 5, 1971, pp. 169-181.
Preparation and Evaluation of Glycolic and Lactic Acid-Based Polymers for Implant Devices Used in Management of Maxillofacial Trauma, I; Sinclair, R. G. et al; Final Scientific Report under Contract No. DADA17-72-C-1053 by Battelle Columbus Laboratories, Columbus, Ohio, supported by U.S. Army Medical Research and Development Command, Washington, D.C. 20314, 1972.
Investigation of the structure of solution grown crystals of lactide copolymers by means of chemical reactions; Fischer, E. W. et al; Kolloid-Z.u.Z. Polymere 251, 1973, pp. 980-990.
Development of a Synthetic Polymer Burn Covering; Gregory, J. B. et al; U.S. Nat. Tech. Inform. Serv., AD Rept. No. 759 381, Mar. 1973.
Biodegradable Polymers for Sustained Drug Delivery; Schindler, A. et al; Contemporary Topics in Polymer Science (Eds. E. M. Pearce et al) Plenum Press, New York, vol. 2 (1977) pp. 255-257.
Polylactide, II, Viscosity-Molecular Weight Relationships and Unperturbed Chain Dimensions; Schindler, A. et al; Journal of Polymer Science: Polymer Chemistry Edition, vol. 17, 1979, pp. 2593-2599.
Stereoregular Bioresorbable Polyesters for Orthopaedic Surgery; Vert, M. et al; Makromol. Chem., Suppl. 5, pp. 30-41, (1981).
Lactic acid polymers: strong, degradable thermoplastics; Wehrenberg II, R. H.; Materials Engineering, Sep. 1981, pp. 63-66.
Biodegradable Composites for Internal Fixation; Christel, P. et al; Adv. Biomaterials, 3, 1982, pp. 271-280.
Medical Editorial-Strong biodegradable thermoplastics; Materials Engineering, (May 1982), p. 56.
Configurational structures of lactic acid stereocopolymers as determined by .sup.13 C-{.sup.31 H} n.m.r.; Chabot et al; Polymer, vol. 24, (Jan. 1983), pp. 53-59.
Biocompatible Poly-L-Lactide Fibers; Hyon, S. H. et al; ACS Polym. Preprint, vol. 24, No. 1, 1983, pp. 6-7.
Characterization of Poly(D,L-Lactic Acid) by Gel Permeation Chromatography; Van Dijk, J.A.P.P.; Journal of Polymer Science: Polymer Chemistry Edition, vol. 21, 1983, pp. 197-208.
Crystallization kinetics of poly(L-lactic acid); Vasanthakumari; Polymer, Feb. 1983, vol. 24, pp. 175-178.
The Ring Opening Polymerization of D,L-Lactide in the Melt Initiated with Tetraphenyltin; Kohn, F. E. et al; Journal. Appl. Polymer Science, vol. 29, pp. 4265-4277 (1984).
Bioresorbable Plastic Materials for Bone Surgery; Vert, M. et al; Macromolecular Biomaterials, Chapter 6, Editors--Garth W. Hastings and Paul Ducheyne, CRC Press, Inc. Boca Raton, Fla., 1984, pp. 120-142.
Melt Spinning of Poly-L-Lactide and Hydrolysis of the Fiber In Vitro; Hyon, S. H. et al; Polymers as Biomaterials, American Chemical Society: Washington, D.C., 1985, ACS Symp. Ser. pp. 51-65.
Polylactones, 6, Influence of various metal salts on the optical purity of poly(L-lactide); Kricheldorf, H. R.; Polym. Bull. (Berlin), 14(6), 1985, pp. 497-502.
In-Vivo Degradation of Poly(Lactic Acid) of Different Molecular Weights; Chawla, A. S. et al; Biomat., Med. Dev., Art. Org., 13(3&4), pp. 153-162 (1985-86).
Is Lactic Acid a Commodity Chemical?; Lipinsky, E. S. and Sinclair, R. G.; CEP Chemical Engineering Progress, Aug. 1986, pp. 26-32.
Biomedical Polymers from Chiral Lactides and Functional Lactones: Properties and Applications; Vert, M.; Macromol. Chem., Macromol. Symp. 6, pp. 109-122, (1986).
Amorphous and crystalline morphologies in glycolic acid and lactic acid polymers; Cohn, D. et al; Polymer, vol. 28, Nov. 1987, pp. 2018-2022.
In vivo Untersuchungen der Festigkeitseigenschaften biologisch abbaubarer Polymere zur Anwendung als Osteosynthesematerialien (In vivo tests of the stability of biodegradable polymers for use as osteosynthesis materials); Gerlach, K. L. et al; Dtsch Z Mund Kiefer Gesichtscher; 11; 1987; pp. 211-216--Translation Provided.
Characterization of Polylactide Synthesis; Jamshidi, K. et al; Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.) 28(1), 1987, pp. 236-237.
Polylactones, 13, Transesterification of Poly(L-Lactide) with Poly(Glycolide), Poly(.beta.-Propiolactone), and Poly(.epsilon.-Caprolactone); Kricheldorf, H. R. et al; J. Macromol. Sci.-Chem., A24(11), 1987, pp. 1345-1356.
Synthesis of high-molecular-weight poly(L-lactide) initiated with tin 2-ethylhexanoate.sup.a); Leenslag, Jan et al; Makromol. Chem. 188, (1987) pp. 1809-1814.
Lactic Acid Polymers-Controlled Release Applications for Biomedical Use and Pesticide Delivery; Sinclair, R. G.; Proceedings of the First Annual Corn Utilization Conference, Jun. 11-12, 1987, pp. 221-236.
Formation of Poly(lactide) with Controlled Molecular Weight, Polymerization of Lactide by Aluminum Porphyrin; Trofimoff, S. et al; Chem. Lett. 1987, pp. 991-994.
Body Absorbable Osteosynthesis Devices; Tunc, D. C. et al; Advances in Biomedical Polymers, Edited by Charles G. Gebelein, Plenum Press, New York and London, 1987, pp. 87
BioPak Technology, Ltd.
Cain Edward J.
Michl Paul R.
LandOfFree
Biodegradable packaging thermoplastics from lactides does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Biodegradable packaging thermoplastics from lactides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Biodegradable packaging thermoplastics from lactides will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-102549