Vinylcyclohexane-based polymers
AssigneesBayer Aktiengesellschaft, Teijin Limited
InventorsVolker Wege, Friedrich-Karl Bruder, Konstadinos Douzinas, Yun Chen
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Abstract
A molding composition comprising a (co)polymer of vinylcyclohexane is disclosed. The copolymer is characterized in having an absolute molecular weight Mw of 100,000 to 450,000 g/mol, polydispersity index of 1 to 3 and maximum melt viscosity of 1000 Pa·s, as measured at 300° C. and at a shear rate of 1000 sec−1. The composition is suitable for producing a variety of molded article most notably optical data storage media.
Claims14
Polymers of vinylcyclohexane with an absolute weight average molecular weight Mw from 100,000 to 450,000 g/mol combined with a low molecular weight component based on vinylcyclohexane with an absolute weight average molecular weight from 1000 to less than 100,000 g/mol, wherein the molecular weight distribution is characterized by a polydispersity index of 1 to 3 and the maximum melt viscosity is 1000 Pa·s, as measured at 300° C. and at a shear rate of 1000 sec−1.
A molding composition comprising a (co)polymer of vinylcyclohexane having an absolute molecular weight Mw of 100,000 to 450,000 g/mol and at least one low molecular weight polymer of vinylcyclohexane having an absolute molecular weight of 1,000 to less than 1000,000 g/mol, wherein the composition has polydispersity index of 1 to 3 and maximum melt viscosity of 1,000 Pa·s, as measured at 300° C. and at a shear rate of 1,000 sec−1.
Dependencies are inferred from the claim text.