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US 11,304,854 B2Granted
Buffered adhesive compositions for skin-adhering medical products
AssigneeHollister Incorporated
InventorsJan Wohlgemuth, Mette Maack, Carsten Rikhof, Peter Skov, Kristoffer Nielsen, Per Ladefoged, Kenneth Nielsen, Michael Taylor, Richard Murahata
Life of this patent
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Abstract
Provided are buffered adhesive compositions comprising a high molecular weight non-neutralized polymeric acid and a high molecular weight partially neutralized polymeric acid and products such as wound dressings and ostomy skin barriers incorporating the compositions.
Claims12
An ostomy skin barrier comprising:
- a first adhesive that includes a polymeric buffer composition;
- a second adhesive, that includes a hydrocolloid;
- and
- wherein the first adhesive includes 40 wt. % of polyisobutylene, 16 wt. % of styrene-isoprene-styrene copolymer, 5 wt. % of liquid PIB, 4 wt. % of polyethylene fibers, 20 wt. % of cross linked polyacrylic acid, and 15 wt. % of cross linked partially neutralized polyacrylic acid.
1 more element
An ostomy skin barrier comprising:
- a first barrier surface having a first adhesive that includes a polymeric buffer composition;
- and
- a second barrier surface having a second adhesive includes a hydrocolloid;
- and
- wherein the first adhesive includes 40 wt. % of polyisobutylene, 16 wt. % of styrene-isoprene-styrene copolymer, 5 wt. % of liquid PIB, 4 wt. % of polyethylene fibers, 20 wt. % of cross linked polyacrylic acid, and 15 wt. % of cross linked partially neutralized polyacrylic acid.
2 more elements
A wound dressing comprising:
- a flexible outer layer;
- a first adhesive that includes a polymeric buffer composition
- a second adhesive that includes a hydrocolloid;
- and
- wherein the first adhesive includes 40 wt. % of polyisobutylene, 16 wt. % of styrene-isoprene-styrene copolymer, 5 wt. % of liquid PIB, 4 wt. % of polyethylene fibers, 20 wt. % of cross linked polyacrylic acid, and 15 wt. % of cross linked partially neutralized polyacrylic acid;
- and
- wherein the first and second adhesives are applied to a side of the flexible outer layer.
4 more elements
A method of manufacturing an ostomy skin barrier comprising the steps of:
- forming a first adhesive into a first barrier surface, the first adhesive including a polymeric buffer composition;
- and
- forming a second adhesive that includes a hydrocolloid;
- and
- wherein the first adhesive includes 40 wt. % of polyisobutylene, 16 wt. % of styrene-isoprene-styrene copolymer, 5 wt. % of liquid PIB, 4 wt. % of polyethylene fibers, 20 wt. % of cross linked polyacrylic acid, and 15 wt. % of cross linked partially neutralized polyacrylic acid.
2 more elements
Dependencies are inferred from the claim text.