Polymers biodegradable or bioerodiable into amino acids

Details Polymers biodegradable or bioerodiable into amino acids Polymers biodegradable or bioerodiable into amino acids

1992-04-16

1993-06-15

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528288, 528289, 528290, 528292, 528293, 528295, 528296, 528299, 528306, 528307, 424423, 424426, 525437, C08G 6320

Patent

active

052199800

ABSTRACT:
The invention presents a biodegradable polyester polymer comprising ##STR1## wherein: n=number of repeating polymer units of the formula shown; p=0 or 1, 0 indicating the absence of the subscripted constituent; q=0 or 1, 0 indicating the absence of the subscripted constituent; when p=0, 1=1; when p=1, 1=0; R.sup.1 =a divalent organic substituent which can include oxygen, nitrogen or sulfur atoms as part of the polymer backbone; R.sup.2 =a divalent organic substituent which can include oxygen, nitrogen or sulfur atoms as part of the polymer backbone; R.sup.3 and R.sup.4 are each independently hydrogen or an organic substituent or together form a divalent ring which may be optionally substituted; and each R is independently H, alkyl, alkenyl or alkynyl, aryl, aralkyl, cycloalkyl, cycloalkenyl or cycloalkynyl, all optionally substituted with F, Cl, Br, I, CN or NO.sub.2.

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