Hydrogels containing absorbable polyoxaamide

Claim 1

A crosslinked aliphatic polyoxaamide comprising: an aliphatic polyoxaamide having a first divalent repeating unit of formula I: [X-C(O)-C(R 1 ) (R 2 )-O-(R 3 )-O-C(R 1 ) (R 2 )-C(O)-]     I and a second repeating unit selected from the group of formulas consisting of: [-Y-R 17 -] T II [-O-R 5 -O(O)-] B III ([-O-R 9 -C(O)] P -O-) L G     XI and combinations thereof, wherein: X and Y are selected from the group consisting of -O- and -N(R)-, provided that X and Y cannot both be -O-; R, R 1 and R 2 are independently selected from the group consisting of hydrogen and an alkyl group containing 1 to 8 carbon atoms; R 3 is selected from the group consisting of an alkylene unit and an oxyalkylene group of the following formula: -[(CH 2 ) C -O-] D -(CH 2 ) E -     IV wherein C is an integer in the range if from 2 to about 5, D is an integer in the range of from 0 to about 2,000, and E is an integer in the range of from about 2 to about 5, except when D is zero, in which case E will be an integer in the range of from 2 to 12; R 17 is an alkylene unit containing from 2 to 8 carbon atoms which may have substituted therein an internal ether oxygen, an internal -N(R 18 )- or an internal C(O) N(R 21 )-; T is an integer in the range of from 1 to 2,000; R 18 and R 21 are independently selected from the group consisting of hydrogen and an alkyl containing 1 to 8 carbon atoms; R 5 and R 9 are selected from the group consisting of C(R 6 ) (R 7 )-, -(CH 2 ) 3 -O-, -CH 2 -CH 2 -O-CH 2 -, -CR 8 H-CH 2 -, -(CH 2 ) 5 -, -(CH 2 ) F -O-C(O)- and -(CH 2 ) K -C(O)-CH 2 -; R 6 and R 7 are independently selected from the group consisting of hydrogen and an alkyl containing from 1 to 8 carbon atoms; R 8 is selected from the group consisting of hydrogen methyl; F and K are independently selected integers in the range of from 2 to 6; B is an integer in the range of from 1 to n such that the number average molecular weight of formula III is less than about 200,000; P is an integer in the range of from 1 to m such that the number average molecular weight of formula XI is less than about 1,000,000; G represents the residue minus from 1 to L hydrogen atoms from the hydroxyl groups of an alcohol previously containing from 1 to about 200 hydroxyl groups; and L is an integer from about 1 to about 200, wherein the aliphatic polyoxaamide has been crosslinked.