US 10,329,384 B2 · Silicone-polyether copolymers, adhesives and medical articles comprising same, and methods of making same

Abstract

Silicone-polyether copolymers, adhesives and medical articles comprising same, and methods of making same. The silicone-polyether copolymer composition can include a backbone composition having a first (silicone) segment and a second (polyether) segment connected randomly via at least one of an oxamide linkage and a urea linkage. The method of making the silicone-polyether copolymer composition can include combining: a) a first (silicone) precursor; b) a second (polyether) precursor; and c) at least one of a diisocyanate and an oxalate compound.

Claims13

Dependent claims

A pressure-sensitive adhesive comprising a copolymer, at least one of a tackifier and a plasticizer, and an active agent,

the copolymer having a backbone composition comprising
a first segment of Formula I:
X—WbX— (I),
wherein X is a silicone;
and
a second segment of a Formula of II:
Y—WcY— (II),
wherein Y is a polyether;
wherein W comprises at least one of an oxamide linkage and a urea linkage;
wherein b is an integer ranging from 2 to 30;
wherein c is an integer ranging from 3 to 30;
wherein the first segment and the second segment are connected via a urea linkage.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/025,740Filed 24 Sep 2014 · us provisional application

Priority

30 Sep 2013

Published

US 2016/0215100 A128 Jul 2016

Granted

25 Jun 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

C08G 77/46
Block-or graft-polymers containing polysiloxane sequences: containing polyether sequences
A61F 13/0253
Characterised by the skin-adhering layer: characterized by the adhesive material
A61K 9/7069
The adhesive comprising macromolecular compounds: obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g.…
A61K 31/167
Having aromatic rings, e.g. colchicine, atenolol, progabide: having the nitrogen of a carboxamide group directly attached to the aromatic ring,…

Silicone-polyether copolymers, adhesives and medical articles comprising same, and methods of making same

Life of this patent

Silicone-polyether copolymers, adhesives and medical articles comprising same, and methods of making same

Life of this patent

Abstract

Claims13