# US 2014/0154201 A1 · Self-adhesive fragranced gels > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154201 A1 - Document ID: US20140154201A1 - Status: Published application - Kind: A1 - Application number: 14/175,974 - Filed: 2014-02-07 - Published: 2014-06-05 - Earliest claimed: 2009-12-02 - Assignees: Firmenich SA - Applicants: Firmenich SA - Inventors: Simon HURRY; Jane SUMMERS - Web page: https://patentgrep.com/patent/US20140154201A1 ## CPC - A61L 9/048: {air treating gels} - A61L 9/012: characterised by being in a special form, e.g. gels, emulsions {(A61L9/048 takes precedence)} - A61L 9/05: specially adapted to be released by contact with a liquid, e.g. for toilets - C11B 9/00: Essential oils; Perfumes - 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) - C11B: PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES (drying-oils C09F) ## Abstract A method for dispensing an active volatile in the environment surrounding a surface, which comprises applying to the surface a self-adhering, water-resistant gel composition of at least one active volatile ingredient, silica, and a water-soluble cationic polysaccharide, and diffusing or releasing the volatile ingredient(s) from the gel in an amount sufficient to purify or sanitize the surrounding air, both in a dry condition or in the presence of humidity or water. The gel composition remains adhered to the surface and actively releases the volatile ingredient(s) even after being exposed to repeated water flows over the composition. ## Claims ### Claim 1 A method for dispensing an active volatile in the environment surrounding a surface, which comprises applying to the surface a self-adhering, water-resistant gel composition comprising between 30 and 95% by weight, relative to the weight of gel composition, of at least one active volatile ingredient; silica in an amount of from 1 to 15% by weight; and a water-soluble cationic polysaccharide in an amount of from 0.1 to 6% by weight to provide strength to the gel; and diffusing or releasing the volatile ingredient(s) from the gel in an amount sufficient to purify or sanitize the surrounding air, both in a dry condition or in the presence of humidity or water; wherein the gel composition remains adhered to the surface and actively releases the volatile ingredient(s) even after being exposed to repeated water flows over the composition. ### Claim 2 (depends on 1) The method of claim 1, wherein the composition is applied to the surface without the use of adhesives, supports or carrying means but remains on the surface after at least 100 exposures to a flow of water over the composition. ### Claim 3 (depends on 1) The method of claim 1, wherein a 4 gram sample of the composition applied to the surface is able to diffuse or release the volatile ingredient(s) even after at least 100 exposures to a flow of 8 liters of water over the composition. ### Claim 4 (depends on 1) The method of claim 1, wherein the composition further comprises one or more of a mineral filler; a solvent; water; a preservative, an antioxidant or an end point indicator. ### Claim 5 (depends on 1) The method of claim 1, wherein the volatile ingredient or mixture of ingredients includes a perfume or a malodor counteractant. ### Claim 6 (depends on 1) The method of claim 1, which further comprises increasing diffusion or releasing of the at least one active volatile ingredient by providing from 60 to 95% of that ingredient in the composition. ### Claim 7 (depends on 1) The method of claim 1, wherein the water-soluble cationic polysaccharide of the composition is a modified guar gum or a hydroxylated guar gum. ### Claim 8 (depends on 7) The method of claim 7, wherein the modified guar gum is present in an amount of from 0.1 to 5%, and comprises guar gum derivatized with hydroxy C2 to C6 alkyl groups optionally containing a C3 to C20 ammonium halide. ### Claim 9 (depends on 8) The method of claim 8, wherein the modified gum of the composition is 2-hydroxypropyl-3-(trimethylammoniumchloride) guar-gum ether. ### Claim 10 (depends on 1) The method of claim 1, which further comprises activating the diffusing or releasing of the volatile ingredient(s) from the gel by contacting the gel with water. ### Claim 11 (depends on 1) The method of claim 1, wherein the surface is repeatedly exposed to humidity or to a water flow. ### Claim 12 (depends on 1) The method of claim 1, wherein the surface is in a shower, wash-basin, sink, toilet, urinal, or washing machine, where the surface experiences repeated water flows. ### Claim 13 (depends on 1) The method of claim 1, wherein the composition includes water in an amount effective to enhance cross-linking of the water-soluble cationic polysaccharide to further increase the adherence of the composition to the surface. ### Claim 14 (depends on 1) The method of claim 1, wherein the surface is part of a volatile material dispenser which diffuses or releases the at least one volatile ingredient, and the ingredient provides perfuming, sanitizing, air-freshening, or is an insecticide or insect repellent. ### Claim 15 (depends on 14) The method of claim 14, wherein the volatile material dispenser is applied in a kitchen, bathroom, garbage bin or pet litter container. ### Claim 16 (depends on 14) The method according to claim 14, which further comprises providing the volatile material dispenser as an air freshener together with packaging materials. ### Claim 17 (depends on 1) The method of claim 1, wherein the self-adhering, water resistant gel composition is prepared by the following steps, which are all carried out at room temperature: a) mixing the volatile ingredient or mixture of ingredients, optionally pre-mixed with a solvent and/or water, with a water-soluble cationic polysaccharide; b) optionally adding a mineral filler, a preservative, an antioxidant and/or an end point indicator to the mixture obtained in step a); c) adding silica to the mixture obtained in step a) or b) under continuous stirring; and d) stirring until complete dispersion of the silica and formation of the self-adhering, water resistant gel composition. ### Claim 18 A self adhering, water resistant gel composition comprising: between 30 and 95% by weight, relative to the weight of gel composition, of at least one active volatile ingredient; silica in an amount of from 1 to 15% by weight; and a water-soluble cationic polysaccharide in an amount of from 0.1 to 6% by weight to provide strength to the gel; wherein the gel composition remains adhered to a surface and actively releases the volatile ingredient(s) even after being exposed at least 100 times to a flow of water over the composition. ### Claim 19 (depends on 18) The composition according to claim 18, wherein the at least one active volatile ingredient is present in an amount of 60 to 95% and the composition further comprises: from 0 to 20% of mineral filler; from 0 to 95% of solvent; from 0 to 50% of water; and from 0 to 5% of a preservative, an antioxidant and/or an end point indicator. ### Claim 20 (depends on 18) The composition according to claim 18, which does not include any surfactant and wherein the water-soluble cationic polysaccharide is present in an amount of from 0.1 to 5%, and is a modified guar gum or a hydroxylated guar gum, wherein the modified guar gum comprises guar gum derivatized with hydroxy C2 to C6 alkyl groups optionally containing a C3 to C20 ammonium halide.