	US 11,920,063 B2
	Oil-resistant optically clear adhesives
Encai Hao, Woodbury, MN (US); Jason D. Clapper, Lino Lakes, MN (US); Albert I. Everaerts, Tucson, AZ (US); and Richard B. Ross, Cottage Grove, MN (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Appl. No. 17/453,299
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed May 5, 2020, PCT No. PCT/IB2020/054260 § 371(c)(1), (2) Date Nov. 2, 2021, PCT Pub. No. WO2020/229948, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 62/846,317, filed on May 10, 2019.
Prior Publication US 2022/0220342 A1, Jul. 14, 2022
Int. Cl. C08F 2/46 (2006.01); C08F 2/50 (2006.01); C08F 220/18 (2006.01); C08F 220/28 (2006.01); C08G 61/04 (2006.01); C09J 4/00 (2006.01); C09J 133/06 (2006.01); C09J 133/14 (2006.01)

CPC C09J 4/00 (2013.01) [C08F 220/1806 (2020.02); C08F 220/281 (2020.02); C09J 133/066 (2013.01); C09J 133/14 (2013.01); C08F 2800/20 (2013.01)]

19 Claims

1. An oil-resistant adhesive composition consisting of:

at least 40% by weight of a hydroxy alkyl (meth)acrylate having an alkyl group containing 2 to 4 carbons;

a short alkyl (meth)acrylate having an alkyl group containing 6 or less carbons;

optionally a monomer selected from 2-ethoxyethoxyethyl acrylate, acrylamide, 2-cyanoacrylate, or tetrahydrofuryfuryl acrylate; and

a photo-initiator,

wherein after the adhesive composition is soaked in oleic acid at room temperature for 7 days, the adhesive composition has an expansion percent of less than about 10%.