Hydroxy-terminated polyhydroxyalkanoates

Details Hydroxy-terminated polyhydroxyalkanoates Hydroxy-terminated polyhydroxyalkanoates

1998-04-20

1999-11-30

Nutter, Nathan M.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525444, 525450, 528361, 435135, 435141, C08F 2000, C08G 6306, C08G 6366, C08G 6502

Patent

active

059944781

ABSTRACT:
Hydroxyterminated PHA is produced by cultivating a PHA-producing microorganism in the presence of an aliphatic diol or an aliphatic polyol. High molecular weight hydroxy-terminated PHA is obtainable by the disclosed process, and is useful in the production of graft, block and random polymers and copolymers with other monomers, oligomers and polymers containing appropriate functionality and end group compatibility.

REFERENCES:
patent: 5120802 (1992-06-01), Mares et al.
patent: 5625030 (1997-04-01), Williams et al.
Hirt, Thomas D. et al. (1996) "Telechelic diols from poly[(R)-3-hydroxybutyric acid] and poly{[(R)-3-hydroxybutyric acid]-co-[(R)-3-hydroxyvaleric acid]}," Macromol. Chem. Phys. 197:1609-1614.
Shi, Fengying et al. (1996) "Use of Poly(ethyene glycol)s To Regulate Poly(3-hydroxybutyrate) Molecular Weight dueing Alcaligenes eutrophus Cultivations," Macromolecules 29:7753-7758.

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