A POLYAMIDE/POLYISOBUTYLENE COMPOSITION AND METHOD OF ITS PREPARATION

摘要

The solution concerns a polyamide/polyisobutylene composition that consists of a mixture of polyamide and/or copolyamide/polyisobutylene and compatibilizer and/or of a mixture of polyamide or copolyamide and compatibilizer whereby the compatibilizer is polyisolbutylene functionalized with isocyanate and subsequently with lactam and/or amide containing in the chain at least one structure unit with a group of general formula I and/or II located in the end group or along the chain, where Z represents H or CH3. The reactive group NHCONHCOR' and/or Y is linked to the benzene ring either directly or through a linear or branched alkyl group R with 1-10 carbon atoms, R' is an aliphatic or aromatic group, Y is a lactam grouping, where n equals 3-11. The compositions in question are prepared by mixing polymer blends at temperatures ranging between 150 and 300 DEG C, preferably at 240-260 DEG C.