	US 12,344,771 B2
	Tackifier composition
Joseph B. Binder, Haverford, PA (US); and Saswati Pujari, Collegeville, PA (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
Appl. No. 17/435,641
Filed by Dow Global Technologies LLC, Midland, MI (US); and Rohm and Haas Company, Collegeville, PA (US)
PCT Filed Jan. 31, 2020, PCT No. PCT/US2020/016160 § 371(c)(1), (2) Date Sep. 1, 2021, PCT Pub. No. WO2020/180435, PCT Pub. Date Sep. 10, 2020.
Claims priority of provisional application 62/812,417, filed on Mar. 1, 2019.
Prior Publication US 2022/0154047 A1, May 19, 2022
Int. Cl. C09J 11/08 (2006.01); C08F 212/08 (2006.01); C08F 220/18 (2006.01); C09J 7/38 (2018.01)

CPC C09J 11/08 (2013.01) [C08F 212/08 (2013.01); C08F 220/1804 (2020.02); C09J 7/385 (2018.01); C08F 2800/20 (2013.01); C09J 2301/408 (2020.08); C09J 2301/414 (2020.08); C09J 2425/00 (2013.01); C09J 2433/00 (2013.01)]

12 Claims

1. A tackifier polymeric additive comprising an emulsion polymerization reaction product of:

(a) at least one monomer with a homopolymer glass transition temperature of greater than 80° C., wherein component (a) is styrene;

(b-1) two acrylate or methacrylate monomers that are n-butyl methacrylate, and methacrylic acid;

(b-2) optionally, methyl methacrylate;

and

wherein

(i) the tackifier polymeric additive has a polymer miscibility score of greater than 0; and

(ii) the glass transition temperature of the tackifier polymeric additive is from 15° C. to 40° C.