US 12,275,824 B2
Processes for recycling polystyrene waste
Roland Côté, St-Antoine-sur-Richelieu (CA)
Assigned to Polystyvert Inc., Anjou (CA)
Filed by POLYSTYVERT INC., Anjou (CA)
Filed on Jul. 3, 2022, as Appl. No. 17/857,028.
Application 17/857,028 is a continuation of application No. 17/353,395, filed on Jun. 21, 2021, granted, now 11,407,878.
Application 17/353,395 is a continuation of application No. 16/699,386, filed on Nov. 29, 2019, abandoned.
Application 16/699,386 is a continuation of application No. 15/515,817, abandoned, previously published as PCT/CA2015/051006, filed on Oct. 5, 2015.
Claims priority of provisional application 62/059,611, filed on Oct. 3, 2014.
Prior Publication US 2023/0002583 A1, Jan. 5, 2023
Int. Cl. C08J 11/08 (2006.01); B29B 17/02 (2006.01); C08F 112/08 (2006.01); C08J 11/00 (2006.01); C08L 25/00 (2006.01); C08L 25/06 (2006.01)
CPC C08J 11/08 (2013.01) [B29B 17/02 (2013.01); C08F 112/08 (2013.01); C08L 25/06 (2013.01); C08J 11/00 (2013.01); C08J 2325/06 (2013.01); C08L 25/00 (2013.01); Y02W 30/62 (2015.05)] 4 Claims
OG exemplary drawing
 
1. A method of using p-cymene, said method comprising contacting said p-cymene with polystyrene and a non-solvent having a boiling point at 1 atm of pressure of from 98° C. to 110° C. for recycling said polystyrene;
wherein the non-solvent is an alkane or mixtures thereof; and
wherein p-cymene is used for dissolving polystyrene and the non-solvent is used for precipitating polystyrene as a paste.