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

Claim 0:
1. Expandable polymer granulate, comprising one or more blowing agents, x) mineral of the general formula ABX3, A and B being cations and X being anions, wherein the mineral has perovskite crystal structure, and y) a styrene homopolymer or styrene copolymer,
wherein the expandable polymer granulate further comprises one or more athermanous additives selected from
a) powder inorganic additive selected from powders of silica and calcium phosphate,
b) powder carbonaceous additive selected from powders of graphite, carbon black, petroleum coke, graphitized carbon black, graphite oxides, and graphene, and
c) powder geopolymer and powder geopolymer composite,
wherein the expandable polymer granulate is expandable to produce a foam having
a density of 8 to 30 kg/m3, and
a thermal conductivity of 25 to 35 mW/K·m as measured according to ISO 8301, and

wherein the amount of the mineral having perovskite crystal structure is in a range from 0.5 to 12 wt % based on the styrene homopolymer or styrene copolymer inclusive of solid and if any, liquid additives but exclusive of propellant,
wherein the mineral having perovskite crystal structure has a moisture content in a range of from 0.01 to 3.0 wt. %, and
wherein the expandable polymer granulate optionally comprises a thermal stabiliser and/or a flame suppressant.