Patent ID: 11859066
Assignee: SYNTHOS S.A.
Field: Other special machines (Mechanical engineering)
Classification: CPC C  Y | IPC C

Claim 14:
15. The expandable polymer granulate of claim 14, wherein the granulate is obtainable by a process comprising the following steps:
feeding the styrene homopolymer or styrene copolymer into an extruder and forming a melt of the styrene homopolymer or styrene copolymer,
adding the mineral of the general formula ABX3, A and B being cations and X being anions, wherein the mineral has perovskite crystal structure, and optionally the thermal stabiliser and/or flame suppressant,
injecting the one or more blowing agents into the melt,
injecting the one or more athermanous additives into the melt, thereby forming a homogenous blend,
extruding the homogenous blend, and
pelletizing the homogenous blend in an underwater pelletizer, so as to obtain the granulate.