US 11,713,388 B2
Titanium dioxide catalyzed butadiene polymer based oxygen scavenging system
Zahra Kordjazi, Montreal (CA); and Abdellah Ajji, Mont-Royal (CA)
Assigned to POLYVALOR, LIMITED PARTNERSHIP, Québec (CA)
Filed by Polyvalor, Limited Partnership, Montreal (CA)
Filed on Oct. 28, 2020, as Appl. No. 17/82,722.
Claims priority of provisional application 62/928,043, filed on Oct. 30, 2019.
Prior Publication US 2021/0130588 A1, May 6, 2021
Int. Cl. C08L 1/28 (2006.01); C08L 23/06 (2006.01); C08L 67/04 (2006.01); B32B 27/08 (2006.01); B32B 27/18 (2006.01); B65D 65/40 (2006.01); B65D 81/26 (2006.01)
CPC C08L 1/28 (2013.01) [B32B 27/08 (2013.01); B32B 27/18 (2013.01); B65D 65/40 (2013.01); B65D 81/266 (2013.01); C08L 23/06 (2013.01); C08L 67/04 (2013.01); B32B 2250/24 (2013.01); B32B 2270/00 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/74 (2013.01); B32B 2553/00 (2013.01); C08L 2207/066 (2013.01)] 35 Claims
OG exemplary drawing
 
1. A composition of matter having oxygen scavenging properties, comprising a blend of:
a base polymer;
a hydroxyl terminated polybutadiene having a number average molecular weight (Mn) in the range of from about 500 to about 10,000; and
titanium dioxide in an amount sufficient to catalyze reaction of oxygen with the hydroxyl terminated polybutadiene, wherein the titanium dioxide is selected from the group consisting of titanium dioxide having an average particle size of 10 nanometers to 20 microns, titanium dioxide which has been subject to doping, heterogeneous systems comprising titanium dioxide in combination with other semiconductors, titanium dioxide in combination with inorganic metal nanoparticles or organic material, dye-sensitized titanium dioxide, and any combination thereof.