Compatible blends from thermoplastic mouldings

摘要

Compatible blends of not less than 2 different, mutually incompatible thermoplastic molding compositions containing functional carboxylic acid, hydroxy, mercapto, unsubstituted and/or mono-substituted amino group(s) contain 0.01-10 wt.% (poly)carbodiimide(s) (I) with ar(alk)ylene group(s) having (cyclo)aliphatic substituent(s) in one or both ortho positions to the carbodiimide group and terminal ar(alk)yl, isocyanate or substituted urea or urethane groups. Compatible blends of not less than 2 different, mutually incompatible thermoplastic molding compositions containing functional COOH (carboxylic acid), OH (hydroxy), SH (mercapto), -NH 2, -NHR (unsubstituted and/or mono-substituted amino) group(s) contain 0.01-10 wt.% (poly)carbodiimide(s) of formula (I): R'-(-N=C=N-R-) n-R (I); R : an aromatic or araliphatic arylene or aralkylene group with aliphatic and/or cycloaliphatic substituent(s) with not less than 2 C atoms, preferably branched or cyclic aliphatic group(s) with not less than 3 C, in one or preferably both ortho-positions to the aromatic C atom with the carbodiimide group; R' : aryl, aralkyl or R-NCO, R-NHCONHR 1>, R-NHCONR 1>R 2> and R-NHCOOR 3>; R : -N=C=N-aryl, -N=C=N-aralkyl, -NCO, -NHCONHR 1>, -NHCONR 1>R 2> or -NHCOOR 3>; R 1>, R 2>alkyl, cycloalkyl or aralkyl; R 3>as R 1> or a polyester or polyamide group; n : 2-5000, preferably 2-500. Independent claims are also included for; (1) A method of production of the above blend; and (2) Use of (I) as compatibilizer for producing these blends.