	US 11,987,700 B2
	Barrier polymer compositions
Ebrahim Jalali Dil, Montréal (CA); and Abdellah Ajji, Mont-Royal (CA)
Assigned to POLYVALOR, LIMITED PARTNERSHIP, Montréal (CA)
Appl. No. 17/628,889
Filed by POLYVALOR, SOCIÉTÉ EN COMMANDITE, Montréal (CA)
PCT Filed Jul. 20, 2020, PCT No. PCT/CA2020/051003 § 371(c)(1), (2) Date Jan. 20, 2022, PCT Pub. No. WO2021/012042, PCT Pub. Date Jan. 28, 2021.
Claims priority of provisional application 62/876,698, filed on Jul. 21, 2019.
Prior Publication US 2022/0251380 A1, Aug. 11, 2022
Int. Cl. C08L 77/02 (2006.01); C08J 5/18 (2006.01); C08L 23/12 (2006.01)

CPC C08L 77/02 (2013.01) [C08J 5/18 (2013.01); C08L 23/12 (2013.01); C08J 2323/06 (2013.01); C08J 2323/12 (2013.01); C08J 2367/04 (2013.01); C08J 2377/02 (2013.01); C08J 2423/06 (2013.01); C08J 2423/08 (2013.01); C08J 2467/02 (2013.01); C08J 2471/02 (2013.01); C08J 2477/02 (2013.01)]

7 Claims

1. A polymer composition comprising about 40% to 48% w/w of polymer A, about 4% to 20% w/w of polymer B, and about 40% to 48% w/w of polymer C, based on total weight of the composition,

wherein the polymer A is the most polar among the polymer A, the polymer B and the polymer C;

wherein the polymer C is the least polar among the polymer A, the polymer B and the polymer C;

wherein the polymer B has the lowest oxygen permeability among the polymer A, the polymer B and the polymer C; and

wherein the polymer composition has oxygen permeability lower than that of binary blend polymer A and C;

wherein the polymer A is polyamide (PA);

wherein the polymer B is ethylene vinyl alcohol (EVOH); and

wherein the polymer C is selected from polyethylene, polypropylene and mixtures thereof; and

wherein the polymer A and polymer C are in a ratio w/w of about 1.