# US 2014/0194838 A1 · Silicone Absorbent Adhesive Layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0194838 A1 - Document ID: US20140194838A1 - Status: Published application - Kind: A1 - Application number: 14/240,617 - Filed: 2012-08-29 - Published: 2014-07-10 - Earliest claimed: 2011-08-30 - Assignees: Avery Dennison Corporation - Inventors: Anne Marie Wibaux; Vicky Van De Pol - Web page: https://patentgrep.com/patent/US20140194838A1 ## CPC - A61L 15/225: {Mixtures of macromolecular compounds} - A61F 13/05: specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT] - A61L 15/58: Adhesives - A61L 15/585: {Mixtures of macromolecular compounds} - A61L 24/0094: {containing macromolecular fillers} - C09J 7/22: Plastics; Metallised plastics - C09J 7/38: Pressure-sensitive adhesives [PSA] - C08L 1/00: Compositions of cellulose, modified cellulose or cellulose derivatives - C09J 101/286: {substituted with acid radicals (C09J101/282 takes precedence)} - C09J 103/02: Starch; Degradation products thereof, e.g. dextrin - C09J 105/00: Adhesives based on polysaccharides or on their derivatives, not provided for in groups C09J101/00 or C09J103/00 - C09J 105/04: Alginic acid; Derivatives thereof - C09J 105/06: Pectin; Derivatives thereof - C09J 183/04: Polysiloxanes - C09J 189/06: derived from leather or skin - C09J 191/06: Waxes - C09J 2401/00: Presence of cellulose - C09J 2483/00: Presence of polysiloxane - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract An adhesive composition comprising silicone adhesives and one or more absorbent fillers such as hydrocolloids is disclosed. The adhesive composition is particularly well suited for use in negative pressure wound therapies. ## Claims ### Claim 1 An adhesive composition comprising: a polysiloxane adhesive; and one or more absorbent fillers dispersed in the polysiloxane adhesive. ### Claim 2 (depends on 1) The adhesive of claim 1 wherein the polysiloxane adhesive is a one-part adhesive and at least partially crosslinked. ### Claim 3 (depends on 1) The adhesive of claim 1 wherein the polysiloxane adhesive is selected from the group consisting of (i) an adhesive having a solids content of about 60%, a viscosity of about 2600 mPA·s, and which exhibits a rheology at 0.01 rad/sec at 30° C. of about 5×106 P, (ii) an adhesive having a solids content of about 60%, a viscosity of about 1200 mPA·s, and which exhibits a rheology at 0.01 rad/sec at 30° C. of about 5×106 P, and (iii) a combination of (i) and (ii). ### Claim 4 (depends on 1) The adhesive of claim 1 wherein the polysiloxane adhesive constitutes at least about 40% by weight of the adhesive composition. ### Claim 5 (depends on 1) The adhesive of claim 1 wherein the absorbent filler is selected from the group consisting of guar gum, xanthan gum, karaya gum, locus gum, polyvinyl alcohol, pectin, gelatin, carboxymethyl cellulose, high molecular weight carbowax, carboxypolymethylene, maize starch, alginic acid, super absorbent polymers, and combinations thereof. ### Claim 6 (depends on 1) The adhesive of claim 1 wherein the absorbent filler is carboxymethyl cellulose. ### Claim 7 (depends on 1) The adhesive of claim 1 wherein the one or more absorbent fillers constitute from about 5% to about 60% by weight of the adhesive composition. ### Claim 8 (depends on 7) The adhesive of claim 7 wherein the one or more absorbent fillers constitute from about 25% to about 35% by weight of the adhesive composition. ### Claim 9 (depends on 1) The adhesive of claim 1 wherein the adhesive composition further comprises: at least one tackifier. ### Claim 10 (depends on 1) The adhesive of claim 1 wherein the adhesive composition further comprises: at least one plasticizer. ### Claim 11 (depends on 1) The adhesive of claim 1 wherein the adhesive composition further comprises: at least one additive. ### Claim 12 (depends on 1) The adhesive of claim 1 wherein the adhesive composition further comprises: at least one filler. ### Claim 13 (depends on 1) The adhesive of claim 1 wherein the adhesive composition further comprises: at least one solvent. ### Claim 14 An article comprising a layer of an adhesive composition comprising (i) a polysiloxane adhesive and (ii) one or more absorbent fillers dispersed in the polysiloxane adhesive. ### Claim 15 (depends on 14) The article of claim 14 wherein the polysiloxane adhesive is a one-part adhesive and at least partially crosslinked. ### Claim 16 (depends on 14) The article of claim 14 wherein the polysiloxane adhesive is selected from the group consisting of (i) an adhesive having a solids content of about 60%, a viscosity of about 2600 mPA·s, and which exhibits a rheology at 0.01 rad/sec at 30° C. of about 5×106 P, (ii) an adhesive having a solids content of about 60%, a viscosity of about 1200 mPA·s, and which exhibits a rheology at 0.01 rad/sec at 30° C. of about 5×106 P, and (iii) a combination of (i) and (ii). ### Claim 17 (depends on 14) The article of claim 14 wherein the polysiloxane adhesive constitutes at least about 40% by weight of the adhesive composition. ### Claim 18 (depends on 14) The article of claim 14 wherein the absorbent filler is selected from the group consisting of guar gum, xanthan gum, karaya gum, locus gum, polyvinyl alcohol, pectin, gelatin, carboxymethyl cellulose, high molecular weight carbowax, carboxypolymethylene, maize starch, alginic acid, super absorbent polymers, and combinations thereof. ### Claim 19 (depends on 14) The article of claim 14 wherein the absorbent filler is carboxymethyl cellulose. ### Claim 20 (depends on 14) The article of claim 14 wherein the one or more absorbent fillers constitute from about 5% to about 60% by weight of the adhesive composition. ### Claim 21 (depends on 20) The article of claim 20 wherein the one or more absorbent fillers constitute from about 25% to about 35% by weight of the adhesive composition. ### Claim 22 (depends on 14) The article of claim 14 wherein the adhesive composition further comprises: at least one tackifier. ### Claim 23 (depends on 14) The article of claim 14 wherein the adhesive composition further comprises: at least one plasticizer. ### Claim 24 (depends on 14) The article of claim 14 wherein the adhesive composition further comprises: at least one additive. ### Claim 25 (depends on 14) The article of claim 14 wherein the adhesive composition further comprises: at least one filler. ### Claim 26 (depends on 14) The article of claim 14 wherein the adhesive composition further comprises: at least one solvent. ### Claim 27 (depends on 14) The article of claim 14 wherein the article is a dressing. ### Claim 28 (depends on 27) The article of claim 27 wherein the dressing further comprises a substrate on which the layer of the adhesive composition is disposed. ### Claim 29 (depends on 27) The article of claim 27 wherein the dressing defines at least one window providing viewing through the window. ### Claim 30 (depends on 29) The article of claim 29 wherein the dressing further comprises a thin barrier film extending over the at least one window and which allows transmission of light therethrough. ### Claim 31 (depends on 27) The article of claim 27 wherein the dressing is a NPWT dressing. ### Claim 32 A method of sealingly securing an article to a substrate, the method comprising: providing an adhesive composition including (i) a polysiloxane adhesive, and (ii) one or more absorbent fillers dispersed in the polysiloxane adhesive; and forming a layer of the adhesive composition between the article and the substrate. ### Claim 33 (depends on 32) The method of claim 32 wherein the substrate is biological skin. ### Claim 34 (depends on 32) The method of claim 32 wherein the method is used in negative pressure wound therapy. ### Claim 35 (depends on 32) The method of claim 32 wherein the layer of the adhesive composition is from about 50 microns to about 300 microns. ### Claim 36 A method for performing at least one of (i) forming a seal about a wound, and (ii) securing an article to skin, the method comprising: identifying a wound or area of interest on a user's skin; providing an adhesive composition including a polysiloxane adhesive and at least one absorbent filler dispersed in the polysiloxane adhesive; providing a layer of the adhesive composition either (i) about the wound, or (ii) between the article and skin. ### Claim 37 (depends on 36) The method of claim 36 wherein the layer of the adhesive composition is from about 50 microns to about 300 microns.