COMPOSITION FOR USE IN WOUND DRESSINGS
A composition comprising an acrylic adhesive, a thermoplastic absorbent polymer, and a gelling agent, a wound dressing comprising said composition, methods of making said composition and wound dressing, and the uses of said composition and wound dressings for treatment of wounds and/or for securement of devices to the skin.
1 . A composition comprising an acrylic adhesive, a thermoplastic absorbent polymer, and a gelling agent.
2 . The composition of claim 1 , wherein the acrylic adhesive is an acrylic hot melt adhesive.
3 . The composition of any preceding claim, wherein the composition comprises:
at least about 40 wt % of an acrylic adhesive;
at least about 1 wt % of a thermoplastic absorbent polymer; and
at least about 1 wt % of a gelling agent.
4 . The composition of any preceding claim, wherein the composition comprises:
up to about 98 wt % of an acrylic adhesive; and/or
up to about 20 wt % of a thermoplastic absorbent polymer; and/or
up to about 50 wt % of a gelling agent.
5 . The composition of any preceding claim, wherein the composition comprises from about 60 wt % to about 80 wt % of an acrylic adhesive, for example wherein the acrylic adhesive is an acrylic hot melt adhesive.
6 . The composition of any preceding claim, wherein the composition comprises from about 1 wt % to about 10 wt % of a thermoplastic absorbent polymer.
7 . The composition of any preceding claim, wherein the composition comprises from about 15 wt % to about 30 wt % of a gelling agent.
8 . The composition of any preceding claim, wherein the thermoplastic absorbent polymer absorbs water in an amount of at least about 100% of its own weight.
9 . The composition of any preceding claim, wherein the thermoplastic absorbent polymer has a glass transition temperature (Tg) equal to or less than about 0° C.
10 . The composition of any preceding claim, wherein the thermoplastic absorbent polymer has a melting temperature equal to or less than about 120° C.
11 . The composition of any preceding claim, wherein the thermoplastic absorbent polymer is a polyurethane polymer.
12 . The composition of any preceding claim, wherein the gelling agent is a superabsorbent polymer or a hydrocolloid.
13 . The composition of any preceding claim, wherein the gelling agent is carboxymethylcellulose (CMC), for example sodium carboxymethylcellulose.
14 . The composition of any preceding claim, wherein the composition further comprises a polyol such as glycerol.
15 . The composition of any preceding claim, wherein the composition further comprises an active agent.
16 . The composition of any preceding claim, wherein the composition further comprises fibres such as polyethylene fibres.
17 . The composition of any preceding claim, wherein the composition has a thickness ranging from about 100 μm to about 2000 μm, for example from about 200μm to about 500 μm.
18 . A wound dressing comprising a composition of any preceding claim.
19 . The wound dressing of claim 18 , wherein the wound dressing further comprises a breathable backing such as a breathable film.
20 . The wound dressing of claim 19 , wherein the breathable backing is a polyether-polyurethane copolymer film.
21 . A method of making a composition of any of claims 1 to 17 , the method comprising mixing the acrylic adhesive, the thermoplastic absorbent polymer, and the gelling agent.
22 . A composition or wound dressing of any preceding claim for treating or preventing a wound and/or for securing a device to skin.
23 . Use of a composition or wound dressing of any preceding claim for treating or preventing a wound and/or for securing device to skin.
24 . A method of treating a wound, the method comprising applying a composition or wound dressing of any preceding claim to the wound.
25 . A method of securing a device to skin, the method comprising applying a composition or wound dressing of any preceding claim to the device and/or skin where the device is to be secured.
26 . The composition or wound dressing for use of claim 22 , the use of claim 23 , or the method of claim 24 or 25 , wherein the wound is a chronic wound or an acute wound.
27 . The composition or wound dressing for use of claim 22 , the use of claim 23 , or the method of claim 24 or 25 , wherein the device is part of a catheter or ostomy system.