Polyanhydride from carboxy aryloxy alkanoic acid

Details Polyanhydride from carboxy aryloxy alkanoic acid Polyanhydride from carboxy aryloxy alkanoic acid

1988-05-23

1989-09-19

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 86, 528207, 528271, C08G 6704

Patent

active

048682748

ABSTRACT:
There are provided novel homopolyanhydrides of carboxyaryloxyalkanoic acids, e.g. p-carboxyphenoxyacetic acid or 6-(p-carboxyphenoxy)hexanoic acid, capable of being formed into shaped articles. The homopolyanhydrides may be prepared by heating under reflux a solution of the acid monomer in acetic anhydride to form a mixed anhydride of the acid monomer and acetic acid and melt polycondensing the prepolymer by heating it under vacuum in an inert atmosphere. Due to their property of hydrolytic cleavage at predictable rates, the homopolyanhydrides are suitable as polymer matrices providing for the controlled release of an agent such as a drug.

REFERENCES:
patent: 4546152 (1985-10-01), Koelmel et al.
K. W. Leong et al., Macromolecules, 20(4), 705-712, Apr. 1987.
K. W. Leong et al., Biomaterials, vol. 7, Sep. 1986, pp. 364-371.
Kito et al., Kogyo Kagaku Zasshi 1971, 74(11), 2312-2315, (Abstracted in C.A. 76(9): 45892c, 1972).
Shamilov et al., Deposited Doctoral Dissertation SPSTL Khp-D82, 6 Pages (1982) (Abstracted in C.A. 101(3): 23072t).

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