	US 12,071,491 B2
	Processing of polyethylene-based compositions and products therefrom
Ana Paula Rodrigues Camilo, São Paulo (BR); Kimberly Miller McLoughlin, Philadelphia, PA (US); Marcelo Farah, São Paulo (BR); Regina Funck Nonemacher, São Paulo (BR); and Ana Paula de Azeredo, São Paulo (BR)
Assigned to Braskem S.A., Camaçari (BR)
Filed by Braskem S.A., Camaçari (BR)
Filed on Nov. 15, 2021, as Appl. No. 17/526,667.
Claims priority of provisional application 63/113,619, filed on Nov. 13, 2020.
Claims priority of provisional application 63/113,570, filed on Nov. 13, 2020.
Prior Publication US 2022/0153883 A1, May 19, 2022
Int. Cl. C08F 10/02 (2006.01); B29C 48/40 (2019.01); C08J 3/18 (2006.01); C08K 5/098 (2006.01); C08K 5/14 (2006.01); C08K 5/32 (2006.01); C08L 23/12 (2006.01); C08L 23/16 (2006.01); C08L 23/30 (2006.01); C09J 123/30 (2006.01); B29L 31/00 (2006.01)

CPC C08F 10/02 (2013.01) [B29C 48/40 (2019.02); C08J 3/18 (2013.01); C08K 5/098 (2013.01); C08K 5/14 (2013.01); C08K 5/32 (2013.01); C08L 23/12 (2013.01); C08L 23/16 (2013.01); C08L 23/30 (2013.01); C09J 123/30 (2013.01); B29L 2031/726 (2013.01); C08F 2810/10 (2013.01); C08J 2323/30 (2013.01); C08L 2203/30 (2013.01); C08L 2207/20 (2013.01)]

20 Claims

1. A method for producing a low viscosity polyethylene-based composition comprising:

melting a polyethylene-based composition;

decreasing a viscosity of the polyethylene-based composition; and

optionally, repeating the melting and the viscosity decreasing steps to form a low melt viscosity polyethylene-based composition;

wherein the melting and viscosity decreasing steps are performed at temperature that is equal to or greater than 400° C., residence time to of less than 2 min, and the polyethylene-based composition is in the presence of at least one free radical generator.