POLYCARBONATE-POLYSILOXANE BLOCK COPOLYMERS BASED ON DIHYDROXYDIPHENYL CYCLOALKANES

Polydiorganosiloxane-polycarbonate block copolymers based on dihydroxydiphenylcycloalkanes of the formula (I) in which R and R , independently of one another, are hydrogen, halogen, preferably chlorine or bromine, C1-C8-alkyl, C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl, preferably phenyl-C1-C4-...

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Bibliographische Detailangaben
Hauptverfasser:	JUNG, ALFRED, WESTEPPE, UWE, IDEL, KARSTEN-JOSEF, HORLACHER, PETER, MORBITZER, LEO, WEYMANS, GUNTHER, FREITAG, DIETER, GRIGO, ULRICH
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Polydiorganosiloxane-polycarbonate block copolymers based on dihydroxydiphenylcycloalkanes of the formula (I) in which R and R , independently of one another, are hydrogen, halogen, preferably chlorine or bromine, C1-C8-alkyl, C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl, preferably phenyl-C1-C4-alkyl, in particular benzyl, m is an integer from 4 to 7, preferably 4 or 5, R and R , independently of one another, and individually selectable for each X, denote hydrogen or C1-C12-alkyl, and X denotes carbon, with the proviso that, on at least one atom X, R and R simultaneously denote alkyl, having a mean molecular weight Mw (weight average) of from 10 000 to 300 000, a content of aromatic carbonate structural units of from 75 to 99.5% by weight, and a content of polydiorganosiloxane structural units of from 25 to 0.5% by weight.