US 12,077,659 B2
Bio-based elastomeric EVA compositions and articles and methods thereof
Giancarlos Delevati, São Paulo (BR); Mauro Alfredo Soto Oviedo, São Paulo (BR); Fernanda Munhoz Anderle, Campinas (BR); Omar Wandir Renck, São Paulo (BR); and José Augusto Esteves Viveiro, São Paulo (BR)
Assigned to Braskem S.A., Camaçari (BR)
Filed by Braskem S.A., Camaçari (BR)
Filed on Jun. 13, 2022, as Appl. No. 17/839,263.
Application 17/839,263 is a division of application No. 16/385,918, filed on Apr. 16, 2019, abandoned.
Application 16/385,918 is a continuation of application No. PCT/IB2019/020007, filed on Apr. 12, 2019.
Claims priority of provisional application 62/658,283, filed on Apr. 16, 2018.
Prior Publication US 2022/0306846 A1, Sep. 29, 2022
Int. Cl. C08L 23/08 (2006.01); C07C 1/24 (2006.01); C08K 5/00 (2006.01); C08L 83/04 (2006.01)
CPC C08L 23/0853 (2013.01) [C07C 1/24 (2013.01); C08K 5/0016 (2013.01); C08L 23/0807 (2013.01); C08L 83/04 (2013.01); C08L 2205/025 (2013.01)] 19 Claims
 
1. A process for producing a polymer composition, comprising:
fermenting a renewable source of carbon to produce ethanol;
dehydrating the ethanol to produce bio-based ethylene;
polymerizing ethylene at least partially comprising the bio-based ethylene with vinyl acetate to produce an ethylene vinyl acetate copolymer; and
mixing the ethylene-vinyl acetate copolymer with an elastomeric polyolefin to produce an elastomeric ethylene-vinyl acetate,
wherein a number average molecular weight (Mn) of the ethylene vinyl acetate copolymer is in a range of from 5 kilodaltons to 50 kilodaltons.