Articles of a new crystalline form of syndiotactic styrene polymer
AssigneeHimont Incorporated
InventorsGaetano Guerra, Vincenzo M. Vitagliano, Paolo Corradini, Enrico Albizzati
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Abstract
Articles of syndiotactic styrene polymer where the polymer is present predominantly in a new crystalline form characterized by an X-ray spectrum which presents reflections of maximum intensity at 2 .theta.of 12.2.degree. and 20.0.degree., where in the 2 .theta. range from 15.degree. to 18.degree. no reflections of appreciable intensity appear.
Claims6
A manufactured article comprising syndiotactic styrene polymer, wherein the styrene polymer is predominantly in crystalline beta' form having an X-ray spectrum having maximum intensity reflections at 2.theta. equal to 12.2.degree. and 20.degree. and no appreciable intensity reflection at 2.theta. from 15.degree. to 18.degree. and obtained by processing the melt of the syndiotactic styrene polymer at a temperature of 50.degree. C. higher than the melting temperature of said polymer.
Dependencies are inferred from the claim text.