Biodegradable or biocompatible copolymer and process for producing same
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United States of America Patent
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Aug 11, 1992
Grant Date -
N/A
app pub date -
Jul 3, 1991
filing date -
Jul 6, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A random copolymer comprising, as repeating units, (i) 20 to 90 mol % of 3-hydroxybutyrate unit (3HB) having the formula (I): ##STR1## (ii) 5 to 70 mol % of 3-hydroxyvalerate unit (3HV) having the formula (II): ##STR2## and (iii) 1 to 15 mol % of 4-hydroxyvalerate unit (4HV) having the formula (III): ##STR3## wherein the total of the units 3HB, 3HV, and 4HV is 100 mol %, and having a weight average molecular weight within the range of from 10,000 to 2,500,000 and a production process thereof.
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