The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 1978
Filed:
Mar. 17, 1977
Paolo Ferruti, Milan, IT;
Ezio Martuscelli, Naples, IT;
Fernando Riva, Naples, IT;
Luciano Provenzale, Rome, IT;
Other;
Abstract
Novel block copolymers suitable to manufacture permanently antithrombogenic prosthetic devices are obtained by first preparing a polyamide-amine prepolymer ##STR1## WHEREIN R.sub.1 and R.sub.2 are alkyl or hydroxy-alkyl radicals with 1-6 carbon atoms, R.sub.3 and R.sub.4 are alkyl radicals with 1-6 carbon atoms, R.sub.5 is an alkenyl radical with 1-12 carbon atoms, or together with R.sub.1, R.sub.2 and R.sub.3, R.sub.4 respectively and the nitrogen atoms to which it is linked, it forms an unsubstituted or substituted piperazine ring and then polymerizing at least one monomer suitable to form thermoplastic addition or condensation polymers in the presence of the polyamide-amine prepolymer.