	US 12,305,095 B2
	Adhesive articles and methods
Scott M. Tapio, Falcon Heights, MN (US); Patrick D. Hyde, Burnsville, MN (US); Jeffrey M. Imsande, Menomonie, WI (US); Terry R. Ray, Oakdale, MN (US); and Christopher R. Johnson, Eagan, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/309,341
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Dec. 13, 2019, PCT No. PCT/IB2019/060783 § 371(c)(1), (2) Date May 20, 2021, PCT Pub. No. WO2020/121278, PCT Pub. Date Jun. 18, 2020.
Claims priority of provisional application 62/779,738, filed on Dec. 14, 2018.
Prior Publication US 2022/0002596 A1, Jan. 6, 2022
Int. Cl. C09J 7/38 (2018.01); C09J 153/00 (2006.01)

CPC C09J 7/387 (2018.01) [C09J 153/00 (2013.01); C09J 2453/00 (2013.01); C09J 2491/00 (2013.01)]

16 Claims

1. A pressure sensitive adhesive article comprising:

a backing having two major surfaces, at least one of which has a pressure sensitive adhesive layer disposed thereon, wherein the pressure sensitive adhesive layer has an average thickness of 25 microns to 50 microns and comprises: a styrene-isoprene-containing block copolymer comprising a styrene-isoprene (SI) diblock copolymer and a styrene-isoprene-styrene (SIS) triblock copolymer, wherein: the total amount of styrene-isoprene diblock copolymer is 15 wt-% to 85 wt-%, based on the total weight of SI diblock and SIS triblock copolymers; and the total amount of styrene is 10 wt-% to 24 wt-%, based on the total weight of styrene and isoprene;

a tackifier; and

an oil in an amount of 20 to 200 parts per one hundred parts of the styrene-isoprene-containing block copolymer;

wherein the pressure sensitive adhesive demonstrates a creep compliance at 30 minutes of greater than 2.0×10−⁴Pa−¹.