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US 10,307,507 B2Granted
Hydrocolloid wound dressings with increased WVTR
Assignee3M Innovative Properties Company
InventorsHerbert C. Chiou, Hae-Seung Lee
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Abstract
Hydrocolloid compositions, wound dressings, methods of using such compositions and such wound dressings, and methods of forming such hydrocolloid compositions, wherein the hydrocolloid compositions include a hydrophobic, unsaturated, elastomeric polymer; a hydrocolloid absorbent; and a hydrophilic polymer including an unsaturated polymer backbone having polyalkylene ether groups bonded thereto.
Claims19
A hydrocolloid composition comprising:
- a hydrophobic, unsaturated, elastomeric polymer;
- a hydrocolloid absorbent;
- and
- a hydrophilic polymer comprising an unsaturated polymer backbone having polyalkylene ether pendant groups bonded thereto,
- wherein the polyalkylene ether groups are derived from a hydrophilic polyalkylene oxide-containing compound and wherein the hydrophilic polyalkylene oxide-containing compound comprises ethylene oxide units and optionally co-polymerized propylene oxide units,
- wherein the unsaturated polymer backbone comprises one of epoxidized polyubutadiene, polyubutadiene and polyisoprene, and
- wherein the hydrophilic polymer is present in an amount that increases the water vapor transmission rate (WVTR) of the hydrocolloid composition relative to the same hydrocolloid composition without the hydrophilic polymer.
4 more elements
A hydrocolloid composition comprising:
- 20-50 wt-% of a hydrophobic, unsaturated, elastomeric homopolymer;
- 5-60 wt-% of a hydrocolloid absorbent;
- and
- 0.5-20 wt-% of a hydrophilic polymer comprising an unsaturated polymer backbone having polyalkylene ether pendant groups bonded thereto;
- wherein the polyalkylene ether groups are derived from a hydrophilic polyalkylene oxide-containing compound and wherein the hydrophilic polyalkylene oxide-containing compound comprises ethylene oxide units and optionally co-polymerized propylene oxide units,
- wherein the unsaturated polymer backbone comprises one of epoxidized polyubutadiene, polyubutadiene and polyisoprene,
- wherein the hydrocolloid composition is in the form of a pressure sensitive adhesive;
- and
- wherein the hydrophilic polymer is present in an amount that increases the WVTR of the hydrocolloid composition relative to the same hydrocolloid composition without the hydrophilic polymer.
6 more elements
A method of forming a hydrocolloid composition, the method comprising:
- compounding a mixture comprising:
- a hydrophobic, unsaturated, elastomeric polymer;
- a hydrocolloid absorbent;
- and
- a hydrophilic polymer comprising an unsaturated polymer backbone having polyalkylene ether pendant groups bonded thereto, wherein the polyalkylene ether groups are derived from a hydrophilic polyalkylene oxide-containing compound, wherein the hydrophilic polyalkylene oxide-containing compound comprises ethylene oxide units and optionally co-polymerized propylene oxide units, and wherein the unsaturated polymer backbone comprises one of epoxidized polyubutadiene, polyubutadiene and polyisoprene;
- and
- irradiating the mixture with radiation sufficient to crosslink the hydrophobic and hydrophilic polymers and form a composition with a crosslinked matrix comprising partial unsaturation.
4 more elements
Dependencies are inferred from the claim text.