	US 12,077,620 B2
	Activatable adhesive compositions and linerless labels and tapes comprising same
Melinda L. Einsla, Royersford, PA (US); Daniel W. Himmelberger, Green Lane, PA (US); William B. Griffith, Jr., North Wales, PA (US); and Sarah Zolynski, Philadelphia, PA (US)
Assigned to Rohm and Haas Company, Collegeville, PA (US)
Filed by Rohm and Haas Company, Collegeville, PA (US)
Filed on Apr. 25, 2022, as Appl. No. 17/728,166.
Application 17/728,166 is a division of application No. 16/338,360, granted, now 11,345,770, previously published as PCT/US2017/043591, filed on Jul. 25, 2017.
Claims priority of provisional application 62/402,416, filed on Sep. 30, 2016.
Prior Publication US 2022/0242982 A1, Aug. 4, 2022
Int. Cl. C08F 220/18 (2006.01); B32B 7/12 (2006.01); B32B 37/12 (2006.01); C08F 220/14 (2006.01); C08F 265/06 (2006.01); C09J 5/06 (2006.01); C09J 7/10 (2018.01); C09J 7/35 (2018.01); C09J 7/38 (2018.01); C09J 133/08 (2006.01); C09J 133/14 (2006.01); C09J 151/06 (2006.01); G09F 3/02 (2006.01); G09F 3/10 (2006.01)

CPC C08F 220/1804 (2020.02) [B32B 7/12 (2013.01); B32B 37/1207 (2013.01); C08F 220/14 (2013.01); C08F 265/06 (2013.01); C09J 5/06 (2013.01); C09J 7/10 (2018.01); C09J 7/35 (2018.01); C09J 7/385 (2018.01); C09J 133/08 (2013.01); C09J 133/14 (2013.01); C09J 151/06 (2013.01); G09F 3/02 (2013.01); G09F 3/10 (2013.01); C08F 220/1808 (2020.02); C09J 2301/304 (2020.08); C09J 2301/414 (2020.08); C09J 2301/416 (2020.08); C09J 2433/00 (2013.01); G09F 2003/0241 (2013.01); G09F 2003/025 (2013.01)]

5 Claims

1. A pressure sensitive adhesive composition wherein the activatable adhesive composition comprises:

a first stage comprising a hydrophilic acrylic polymer with a first Hansch value having an acid content of less than 200 mg KOH/g;

a second stage polymerized within the first stage and comprising a hydrophobic polymer with a second Hansch value larger than the first Hansch value; and

a tackifier soluble in the first stage and the second stage.