# US 2014/0154491 A1 · Foam-like materials and methods for producing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154491 A1 - Document ID: US20140154491A1 - Status: Published application - Kind: A1 - Application number: 14/174,111 - Filed: 2014-02-06 - Published: 2014-06-05 - Earliest claimed: 2010-04-27 - Assignees: Allergan, Inc. - Applicants: Allergan, Inc. - Inventors: Alexei Goraltchouk; Jordan Thompson; Miriam M. Abiad; Kevin Ma; Dennis Van Epps; Nicholas J. Manesis - Web page: https://patentgrep.com/patent/US20140154491A1 ## CPC - C08J 9/26: by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out - C08J 9/365: {Coating} - C08J 2201/046: Elimination of a polymeric phase - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) ## Abstract Described herein are foam-like materials having substantially the same physical structure of polyurethane foams but with properties that can be tailored for a particular application. Methods of forming these foam-like materials are also described. ## Claims ### Claim 1 A porous material made by the steps of: providing a polyurethane foam base material having a porous surface; contacting the base material with a first fluid material; drawing the first fluid material into intimate contact with the base material to form a coat of the first fluid material on the base material; curing the coat on the base material; and removing the base material from the cured coat, resulting in a porous material comprising the cured first fluid material. ### Claim 2 (depends on 1) The porous material of claim 1 wherein the step of drawing the first fluid material into intimate contact with the base material includes using a vacuum. ### Claim 3 (depends on 2) The porous material of claim 2 further comprising using positive air pressure to blow away excess fluid material from the base material before the step of curing. ### Claim 4 (depends on 1) The porous material of claim 1 wherein the first fluid material is a silicone elastomer dispersion. ### Claim 5 (depends on 1) The porous material of claim 1, wherein the base material is removed by dissolution. ### Claim 6 (depends on 1) The porous material of claim 1 wherein the step of removing the base material comprises removing all of the base material from the cured first fluid material. ### Claim 7 (depends on 1) The porous material of claim 1 wherein the step of removing the base material comprises contacting the base material with a solution, mixture, suspension, emulsion, dispersion or combination thereof capable of dissolving the base material. ### Claim 8 (depends on 1) The porous material of claim 1 wherein the step of removing the base material comprises degradation or dissolution of the base material with a base, a solvent, an enzyme, an acid, heat, oxidation, ultraviolet light, gamma irradiation, visible light, infrared light or a combination thereof. ### Claim 9 (depends on 1) The porous material of claim 1 wherein the coat has a thickness of about 10 μm to about 500 μm. ### Claim 10 (depends on 1) The porous material of claim 1 wherein the coat has a thickness of about 50 μm to about 100 μm. ### Claim 11 (depends on 1) The porous material of claim 1 further comprising repeating the contacting step to achieve a desired thickness of the coat. ### Claim 12 A porous material made by the steps of: providing an open cell polyurethane foam base material having a porous surface; contacting the base material with a liquid silicone dispersion to form a coating on the base material; removing a portion of the liquid silicone dispersion from the base material by using a vacuum to draw the first fluid material into intimate contact with the porous surface of the base material and using positive air pressure to blow away excess fluid material; curing the liquid silicone dispersion remaining on the base material after the step of removing a portion, to form a cured silicone elastomer coating on the base material; and removing the base material from the silicone elastomer coating, thereby leaving a porous material comprising silicone. ### Claim 13 (depends on 12) The porous material of claim 12 further comprising using positive air pressure or a vacuum to remove excess fluid material from the base material before the step of curing. ### Claim 14 (depends on 12) The porous material of claim 12 wherein the step of removing the base material comprises contacting the base material with a solution capable of dissolving the base material. ### Claim 15 (depends on 12) The porous material of claim 12 wherein the step of removing the base material comprises degradation or dissolution of the base material with a base, a solvent, an enzyme, an acid, heat, oxidation, ultraviolet light, gamma irradiation, visible light, infrared light or a combination thereof. ### Claim 16 (depends on 12) The porous material of claim 12 wherein the coating has a thickness of about 10 μm to about 500 μm. ### Claim 17 (depends on 12) The porous material of claim 12 wherein the coating has a thickness of about 50 μm to about 100 μm. ### Claim 18 (depends on 1) The porous material of claim 1 further comprising repeating the contacting step to achieve a desired thickness of the coating.