Polycarbonates having good wettability

Details Polycarbonates having good wettability Polycarbonates having good wettability

C - Chemistry, Metallurgy

08

G

C08G 64/12 (2006.01)

Patent

CA 2591615

The invention relates to a polycarbonate which is characterised in that the proportion of carbamate derivatives of formula (I) of said polycarbonate resin, which is measured according to alkaline hydrolysis containing caustic soda, is 0.01 to 150 ppm, wherein R1 and R2 independently represent hydrogen or C1-C12-alkyl or R1 and R2 together represent C4- to C12-alkylides, R3 and R4 independently represent hydrogen, C1-C12-alkyl or phenyl, or R3 and R4 form cyclohexyl or trimethylcyclohexyl together with the hydrogen atoms whereon they are joined.

L'invention concerne un polycarbonate caractérisé en ce que la fraction de dérivés de carbamate de la formule (1) de ces résines de polycarbonate qui est mesurée après une hydrolyse alcalique avec une solution d'hydroxide de sodium, est de 0,01à 150 ppm. Dans la formule (1), R1 et R2 représentent indépendamment un hydrogène ou alkyle C1-C12 ou R1 et R2 représentent ensemble un alkylidène C4- à C12; R3 et R4 représentent indépendamment un hydrogène, alkyle C1-C12 ou phényle, ou R3 et R4 avec l'atome de carbone auquel ils sont liés, forment un cyclohexyle ou un triméthylcyclohexyle.

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