	US 12,234,304 B2
	Process and catalyst for hydrogen mediated saline hydride initiated anionic chain transfer polymerization
William J. Layman, Jr., Baton Rouge, LA (US)
Assigned to ALBEMARLE CORPORATION, Charlotte, NC (US)
Filed by ALBEMARLE CORPORATION, Charlotte, NC (US)
Filed on Jan. 19, 2023, as Appl. No. 18/156,648.
Application 18/156,648 is a division of application No. 16/095,202, granted, now 11,591,420, previously published as PCT/US2017/026340, filed on Apr. 6, 2017.
Claims priority of provisional application 62/325,149, filed on Apr. 20, 2016.
Prior Publication US 2023/0227591 A1, Jul. 20, 2023
Int. Cl. C08F 112/08 (2006.01); C08F 2/38 (2006.01); C08F 4/46 (2006.01); C08K 5/05 (2006.01); C08K 5/17 (2006.01); C08K 5/57 (2006.01)

CPC C08F 112/08 (2013.01) [C08F 2/38 (2013.01); C08F 4/461 (2013.01); C08K 5/05 (2013.01); C08K 5/175 (2013.01); C08K 5/57 (2013.01); C08F 2410/01 (2013.01); C08F 2500/02 (2013.01)]

9 Claims

1. A process for anionic chain transfer polymerization comprising feeding a vinyl aromatic and/or conjugated diene monomer under an atmosphere comprising molecular hydrogen to a reactor vessel containing a reaction mixture of an inert ethereal solvent and an alkali metal or alkali metal alloy.