Polymers containing acetal, carboxy-acetal, ortho ester and carb

Details Polymers containing acetal, carboxy-acetal, ortho ester and carb Polymers containing acetal, carboxy-acetal, ortho ester and carb

1988-08-22

1990-09-18

Morgan, Kriellion

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

Synthetic resins

From ketone or ketene reactant

528361, 528392, 525 43, 525186, C08G 6306, C08G 6700

Patent

active

049579983

ABSTRACT:
Biodegradable polymers that are useful for making biodegradable sustained release agent dispensers and which contain acetal, carboxy-acetal, ortho ester and/or carboxy-ortho ester linkages.

REFERENCES:
patent: 2957856 (1960-10-01), Guest et al.
patent: 4093709 (1978-06-01), Choi et al.
patent: 4131648 (1978-12-01), Choi et al.
patent: 4139344 (1979-02-01), von der Eltz
patent: 4180646 (1979-12-01), Choi et al.
patent: 4304767 (1981-12-01), Heller et al.
patent: 4549010 (1985-10-01), Sparer et al.
patent: 4707540 (1987-11-01), Manser et al.

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