US 11,859,066 B2
Use of a mineral having perovskite structure in vinyl aromatic polymer foam
Filip Lukasz Kondratowicz, Cracow (PL); Piotr Rojek, Cracow (PL); Marzena Mikoszek-Operchalska, Ruda Slaska (PL); and Kamil Utrata, Cwiklice (PL)
Assigned to SYNTHOS S.A., Oswiecim (PL)
Appl. No. 15/543,288
Filed by SYNTHOS S.A., Oswiecim (PL)
PCT Filed Jan. 14, 2016, PCT No. PCT/EP2016/050616
§ 371(c)(1), (2) Date Jul. 13, 2017,
PCT Pub. No. WO2016/113328, PCT Pub. Date Jul. 21, 2016.
Claims priority of application No. 15461505 (EP), filed on Jan. 14, 2015.
Prior Publication US 2017/0369666 A1, Dec. 28, 2017
Int. Cl. C08J 9/18 (2006.01); C08J 9/00 (2006.01); C08J 9/14 (2006.01)
CPC C08J 9/0066 (2013.01) [C08J 9/141 (2013.01); C08J 9/18 (2013.01); C08J 2201/034 (2013.01); C08J 2325/00 (2013.01); C08J 2325/04 (2013.01); C08J 2325/06 (2013.01)] 25 Claims
 
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.