초록 ▼

The invention provides poly(a1 is hydrogen or methyl groups, m is a positive integer, and a and b are zero or positive integers, the case where a and b are simultaneously zero being excluded, and chain extended multiblock polymers which polymers are bioabsorbable and biodegradable, these polymeric m

The invention provides poly(a1 is hydrogen or methyl groups, m is a positive integer, and a and b are zero or positive integers, the case where a and b are simultaneously zero being excluded, and chain extended multiblock polymers which polymers are bioabsorbable and biodegradable, these polymeric materials being derived from reacting diols in the form of polyether glycols with a

대표청구항 ▼

A poly(a1 is hydrogen or methyl groups, m is a positive integer, and a and b are zero or positive integers, the case where a and b are simultaneously zero being excluded, or (b) a chain extended multiblock polymer of the following formula II: [Figure] II wherein R represents an alkylene group, R1 is

A poly(a1 is hydrogen or methyl groups, m is a positive integer, and a and b are zero or positive integers, the case where a and b are simultaneously zero being excluded, or (b) a chain extended multiblock polymer of the following formula II: [Figure] II wherein R represents an alkylene group, R1 is hydrogen or methyl groups and R′is hexamethylene, 4,4′-diphenylmethane, toluene, naphtalene, 4,4′-dicyclohexylmethane, cyclohexyl, 3,3′-dimethylphenyl, 3,3′-dimethyl-diphenylmethane, 4,6′-xylylene, 3,5,5-trimethylcyclohexyl, 2,2,4-trimethyl-hexamethylene and p-phenylene, or diisocyanate terminated polyalkylene glycol chains comprising a central polyalkylene glycol chain capPed by two diisocyanate compounds of the above, or (c) a chain extended multiblock polymer of the following formula III [Figure] III wherein R represents an alkylene group, R1 is hydrogen or methyl groups, R″is a saturated or unsaturated allkylene group, or an aromatic ring, x and y are identical or different positive integers, and m is a positive integer.