A composition of an aliphatic ester-amide copolymer which is soluble in an organic solvent with an LD.sub.50 value (orally administered to a rat) of about 2,000 mg/kg or more. ...http://www.google.es/patents/US5854376?utm_source=gb-gplus-sharePatente US5854376 - Aliphatic ester-amide copolymer resins