	US 12,275,876 B2
	Hot melt processable (meth)acrylate-based medical adhesives
Jungkang Liu, St. Paul, MN (US); Athanasios Touris, Santa Ana, CA (US); Shijing Cheng, Woodbury, MN (US); Wengsheng Xia, Woodbury, MN (US); and Ying Zhang, Woodbury, MN (US)
Assigned to Solventum Intellectual Properties Company, Maplewood, MN (US)
Appl. No. 17/417,169
Filed by Solventum Intellectual Properties Company, Maplewood, MN (US)
PCT Filed Dec. 23, 2019, PCT No. PCT/IB2019/061291 § 371(c)(1), (2) Date Jun. 22, 2021, PCT Pub. No. WO2020/136555, PCT Pub. Date Jul. 2, 2020.
Claims priority of provisional application 62/785,319, filed on Dec. 27, 2018.
Prior Publication US 2022/0081593 A1, Mar. 17, 2022
Int. Cl. C09J 7/38 (2018.01); A61L 26/00 (2006.01); C09J 7/35 (2018.01)

CPC C09J 7/385 (2018.01) [A61L 26/0014 (2013.01); A61L 26/0061 (2013.01); C09J 7/35 (2018.01); C09J 2301/416 (2020.08); C09J 2401/006 (2013.01); C09J 2433/00 (2013.01); C09J 2475/006 (2013.01)]

20 Claims

1. An article, comprising:

a substrate; and

a hot melt processable pressure sensitive adhesive disposed on at least a portion of the substrate, wherein the hot melt processable pressure sensitive adhesive does not comprise a tackifier, and wherein the hot melt processable pressure sensitive adhesive comprises a (meth)acrylate-based copolymer that is the reaction product of a reaction mixture that is free of acidic or basic monomers and comprises, as the polymerizable components:

70-96 parts by weight of a first (meth)acrylate monomer of general formula I:

CH₂═CR¹—(CO)—OR² Formula I

wherein R¹is hydrogen or a methyl group; and

R²is an alkyl, heteroalkyl, alkenyl, or aryl group;

4-30 parts by weight of a second (meth)acrylate monomer of general formula II:

CH₂═CR¹—(CO)—OR³ Formula II

wherein R¹is hydrogen or a methyl group; and

R³is a hydroxyl substituted alkyl group, a hydroxyl substituted heterocyclic group, a hydroxyl substituted aryl group, or a hydroxyl substituted macromolecule; and

a co-polymerizable photocrosslinker.