# US 5,880,218 A · Compounded polymeric compositions utilizing processed paint sludge as a replacement for polymeric components > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,880,218 A - Document ID: US5880218A - Status: Granted - Kind: A - Application number: 08/558,008 - Filed: 1995-11-13 - Granted: 1999-03-09 - Earliest claimed: 1995-11-13 - Assignees: Aster Co., Ltd. - Inventors: Michael Joseph Gerace; Yasminka S. Landaburu; Sevilla C. Gamboa - Web page: https://patentgrep.com/patent/US5880218A ## CPC - C08J 11/00: Recovery or working-up of waste materials (recovery of plastics B29B17/00; polymerisation processes involving purification or recycling of waste polymers or their depolymerisation products C08B, C08C, C08F, C08G, C08H) - 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 Compounded polymeric compositions containing processed paint sludge putty as a replacement for polymeric components are provided. The paint sludge comprises from about 5 to 90% by weight of the total compounded polymeric composition and may be decatalyzed so that it contains uncured polymer for use in a variety of compositions including pressure sensitive sealants, caulking sealants, automotive sealants, polyvinyl chloride plastics, rubbers and asphalt cement coatings. ## Claims ### Claim 1 A compounded polymeric composition comprising: a) at least one polymeric component selected from the group consisting of plasticizers, binders, tackifiers. modifiers, rubbers, resins, and mixtures thereof, and b) processed paint sludge putty containing uncured polymer, wherein said processed paint sludge putty is a replacement for at least a portion of said at least one polymeric component, wherein said paint sludge putty has been processed from raw paint sludge containing water, solvent and uncured polymer which has been agitated under a vacuum at a temperature of about 225.degree. F. such that a portion of the water and solvent is removed from said sludge; wherein said processed paint sludge putty comprises from about 20 to 50% by weight of the total compounded polymeric composition. ### Claim 2 A compounded polymeric composition comprising: a) at least one polymeric component selected from the group consisting of plasticizers, binders, tackifiers, modifiers, rubbers, resins, and mixtures thereof, and b) processed paint sludge putty containing uncured polymer, wherein said processed paint sludge is a replacement for at least a portion of said at least one polymeric component, wherein said paint sludge putty has been decatalyzed by treatment with from about 0.1 to 10% of a base having a pH range of from 8-13. ### Claim 3 (depends on 2) The compounded polymeric composition of claim 2 wherein said base is selected from the group consisting of diethanolamine, 2-amino-2-methyl-2 -propanol, diisopropanol amine, triisopropanol amine, potassium hydroxide, and sodium hydroxide. ### Claim 4 (depends on 1) The compounded polymeric composition of claim 1 comprising a heat-curable sealant including from about 10 to 90% by weight of said processed paint sludge putty, 1 to 10% by weight of a polyvinyl chloride resin, from about 10 to 20% by weight of a plasticizer, and from about 0.1 to 1.0% by weight of an adhesion promoter. ### Claim 5 (depends on 2) The compounded polymeric composition of claim 2 comprising a pressure sensitive sealant including from about 5 to 75% by weight of said decatalyzed paint sludge putty, from about 5 to 15% by weight of a rubber elastomer, from about 1 to 10% by weight of a thixotrope, and from about 10 to 20% by weight of a tackifier. ### Claim 6 (depends on 5) The compounded polymeric composition of claim 5 wherein said rubber elastomer is selected from the group consisting of butyl rubber, styrene-butadiene, EPDM rubber, and mixtures thereof. ### Claim 7 (depends on 2) The compounded polymeric composition of claim 2 comprising a caulking sealant including from about 15 to 75% by weight of said decatalyzed paint sludge putty, from about 5 to 10% by weight chlorobutyl rubber, from 5 to 15% by weight of an ester resin and from about 20 to 35% by weight of a solvent. ### Claim 8 (depends on 2) The compounded polymeric composition of claim 2 comprising an automotive paintable seam sealer including from about 10 to 75% by weight of said paint sludge putty, from about 15 to 30% by weight of a plasticizer, from about 10 to 25% by weight of a polyvinyl chloride resin, and from about 1 to 5% by weight of an adhesion promoter. ### Claim 9 (depends on 2) The compounded polymeric composition of claim 2 comprising an automotive underbody sealer including from about 10 to 75% by weight of said decatalyzed paint sludge putty, from about 15 to 25% by weight of a thixotrope, from about 20 to 30% by weight of a plasticizer, from about 20 to 30% by weight of a polyvinyl chloride resin, and from about 0.1 to 1.0% by weight of an adhesion promoter. ### Claim 10 (depends on 2) The compounded polymeric composition of claim 2 comprising an automotive body shop adhesive including from 5 to 50% by weight of said decatalyzed paint sludge putty, from about 1 to 5% by weight nitrile rubber, from about 15 to 20% by weight of a thixotrope, from about 20 to 30% by weight of a plasticizer, from about 15 to 30% by weight of a polyvinyl chloride resin, and from about 1 to 5% by weight of a curing agent. ### Claim 11 (depends on 2) The compounded polymeric composition of claim 2 comprising a flexible polyvinyl chloride plastic including from about 5 to 75% by weight of said decatalyzed paint sludge putty, from about 15 to 30% by weight of a plasticizer, from about 10 to 35% by weight of a thixotrope, and from about 20 to 40% by weight polyvinyl chloride resin. ### Claim 12 (depends on 2) The compounded polymeric composition of claim 2 comprising a cured butyl rubber including from about 5 to 30% by weight of said decatalyzed paint sludge putty, from about 15 to 30% by weight butyl rubber, from about 15 to 30% by weight chlorobutyl, from about 25 to 35% by weight of a thixotrope, and from about 5 to 15% by weight paraffinic process oil. ### Claim 13 (depends on 2) The compounded polymeric composition of claim 2 wherein said processed paint sludge putty comprises from about 5 to 90% by weight of the total compounded polymeric composition. ### Claim 14 (depends on 2) The compounded polymeric composition of claim 2 wherein said processed paint sludge putty comprises from about 20 to 50% by weight of the total compounded polymeric composition. ### Claim 15 A modified asphalt cement coating formed from processed paint sludge putty containing uncured polymer, wherein said paint sludge putty has been decatalyzed with a base, said coating comprising about 8% by weight paint sludge putty and about 92% by weight asphalt cement. ### Claim 16 A compounded polymeric composition comprising: a) at least one polymeric component selected from the group consisting of plasticizers, binders, tackifiers, modifiers, rubbers, resins, and mixtures thereof, and b) processed paint sludge putty containing uncured polymer, wherein said processed paint sludge is a replacement for at least a portion of said at least one polymeric component, wherein said processed paint sludge putty comprises from about 20 to 50% by weight of the total compounded polymeric composition.