Copolyester and process for producing the same

Details Copolyester and process for producing the same Copolyester and process for producing the same

1988-08-10

1989-10-24

Nielsen, Earl

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

530200, C08G 6302, C08H 500

Patent

active

048763314

ABSTRACT:
According to the present invention, a novel copolyester comprising 3-hydroxybutyrate unit, 3-hydroxyvalerate unit and 5-hydroxyvalerate unit; 3-hydroxybutyrate unit and 4-hydroxybutyrate unit; or 3-hydroxybutyrate unit, 4-hydroxybutyrate unit and 3-hydroxyvalerate unit is easily obtained.
Further, since the copolyester according to the present invention has various excellent specific properties, it is extremely suitable as the biomedical materials such as suture material and fixation materials for bone fracture, and its application to various fields such as the slow-releasing system, etc. is expected.

REFERENCES:
patent: 4358583 (1982-11-01), Walker et al.
patent: 4477654 (1984-10-01), Holmes et al.
patent: 4562245 (1985-12-01), Stageman
S. Shimizu and T. Suzuki, Hakko to Kagyo, 45(11), 1080, (1987), "Production of Poly-Beta-Hydroxybutyric Acid from Methanol by Microorganisms".
Appl. Microbiol, Biotechnol, 27, 487, (1988).
Polymer Journal, 19(11), 1241, (1987).
Polymer Communications, 29, 112, (1988).
Macromolecules, 20, 3086, (1987).
Chemical Week, Aug. 28, 55, (1985).

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