	US 12,275,219 B2
	Monovinylidene aromatic multilayer sheet containing impact modifiers
Mark Georges Vreys, Oostakker (BE); Claude T. E. Van Nuffel, Oostakker (BE); and Abidin Balan, Breda (NL)
Assigned to TRINSEO EUROPE GMBH, Pfaeffikon (CH)
Appl. No. 18/691,761
Filed by TRINSEO EUROPE GMBH, Pfaeffikon (CH)
PCT Filed Sep. 14, 2022, PCT No. PCT/EP2022/075520 § 371(c)(1), (2) Date Mar. 13, 2024, PCT Pub. No. WO2023/041577, PCT Pub. Date Mar. 23, 2023.
Claims priority of application No. 21196544 (EP), filed on Sep. 14, 2021.
Prior Publication US 2024/0286393 A1, Aug. 29, 2024
Int. Cl. B32B 27/30 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/18 (2019.01); B29C 48/21 (2019.01); B32B 27/08 (2006.01); B32B 27/18 (2006.01); B32B 27/32 (2006.01); B29C 48/495 (2019.01); B29K 23/00 (2006.01); B29K 33/00 (2006.01); B29K 33/18 (2006.01); B29K 55/00 (2006.01); B29K 105/00 (2006.01); B29K 105/26 (2006.01)

CPC B32B 27/302 (2013.01) [B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/18 (2019.02); B29C 48/21 (2019.02); B32B 27/08 (2013.01); B32B 27/18 (2013.01); B32B 27/32 (2013.01); B29C 48/495 (2019.02); B29K 2023/00 (2013.01); B29K 2033/00 (2013.01); B29K 2033/18 (2013.01); B29K 2055/00 (2013.01); B29K 2105/0002 (2013.01); B29K 2105/0085 (2013.01); B29K 2105/0088 (2013.01); B29K 2105/0094 (2013.01); B29K 2105/26 (2013.01); B29K 2995/0088 (2013.01); B32B 2250/24 (2013.01); B32B 2264/0207 (2013.01); B32B 2264/302 (2020.08); B32B 2264/303 (2020.08); B32B 2270/00 (2013.01); B32B 2272/00 (2013.01); B32B 2307/406 (2013.01); B32B 2307/552 (2013.01); B32B 2307/558 (2013.01); B32B 2307/7376 (2023.05); B32B 2307/738 (2013.01); B32B 2509/10 (2013.01); Y02P 20/143 (2015.11); Y02W 30/62 (2015.05)]

18 Claims

1. A composition comprising: a thermoformable sheet having three or more layers wherein: (i) an inner layer comprises: (1) postconsumer recycled monovinylidene aromatic monomer containing polymers which are impact modified by a rubber, (2) optionally, post-industrial recycled monovinylidene aromatic monomer containing polymers which are impact modified by a rubber, and (3) optionally, virgin monovinylidene aromatic monomer containing polymers which are impact modified by a rubber; (ii) two layers adjacent to the inner layer comprise a branched rubber modified monovinylidene aromatic polymer having a Mz+1 of about 600,000 to about 2,500,000; a Brinkman crosslink density of about 0.6 to 0.8; an elongational viscosity after 3 seconds at 200° C. of 75,000 Pa/s greater and a gel content of 30 or higher; wherein at least one of the two layers is an outer layer; and optionally, an outer layer which is a gloss layer.