use of piromellitati as plasticizers for thermoplastics, compositions for the manufacture of articles for biomedical use.related compositions and articles for use in biomedical realizzanti with the same.

摘要

Plasticised polymer compsn. (I) for articles of biomedical use contains as plasticiser one or more pyromellitate esters (II). R1-4 = 1-15C linear or branched alkyl, pref. ethyl or octyl; 1-15C linear or branched alkenyl; or 5-6C (substd.) cycloaliphatic or aromatic gps.