US 12,486,391 B2
Uses of styrenic polymers derived through depolymerized polystyrene
Benjamin Scott, Brantford (CA); and Domenic Di Mondo, Brantford (CA)
Assigned to GreenMantra Recycling Technologies Ltd., Brantford (CA)
Filed by GreenMantra Recycling Technologies Ltd., Brantford (CA)
Filed on Oct. 29, 2020, as Appl. No. 17/083,681.
Application 17/083,681 is a continuation of application No. PCT/CA2019/050761, filed on May 31, 2019.
Claims priority of provisional application 62/678,780, filed on May 31, 2018.
Prior Publication US 2021/0087377 A1, Mar. 25, 2021
Int. Cl. C08L 25/06 (2006.01); C08F 2/22 (2006.01); C08F 2/50 (2006.01); C08F 36/02 (2006.01); C08F 36/22 (2006.01); C08K 3/013 (2018.01); C08K 5/00 (2006.01); C09D 11/107 (2014.01)
CPC C08L 25/06 (2013.01) [C08F 2/22 (2013.01); C08F 2/50 (2013.01); C08F 36/02 (2013.01); C08F 36/22 (2013.01); C08K 3/013 (2018.01); C08K 5/0041 (2013.01); C09D 11/107 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A water-based ink comprising:
a pigment;
an additive;
a latex comprising a styrenic polymer created via depolymerization of a recycled polystyrene feedstock via a depolymerization process; and
an UV-active monomer,
wherein said styrenic polymer has a weight average molecular weight between 50000-150000 amu,
wherein the particle size of said latex is greater than 1 micrometer,
wherein said depolymerization process utilizes a catalyst, and
wherein said styrenic polymer comprises:
greater than 50 ppm of zinc;
greater than 20 ppm titanium; and
greater than 20 ppm iron.