# US 4,391,859 A · Process and a composition for the insulation of surfaces, and product hereby obtained > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,391,859 A - Document ID: US4391859A - Status: Granted - Kind: A - Application number: 06/332,679 - Filed: 1981-12-21 - Granted: 1983-07-05 - Earliest claimed: 1974-07-10 - Assignees: AB Bonnierforetagen - Inventors: Ernst R. Fogelberg - Web page: https://patentgrep.com/patent/US4391859A ## CPC - E04B 1/66: Sealings ({damp-proof courses E04B1/644; fire-proof sealings E04B1/948;} additions of anti-leak properties to plaster C04B; bituminous sealing masses C08L95/00; sealings for hydraulic engineering work in general E02B3/16; against ground humidity or ground water E02D31/02; coverings against rain or other precipitations of the atmosphere E04D) - C09D 5/028: {Pigments; Filters} - C09D 7/62: modified by treatment with other compounds - C09K 3/18: for application to surfaces to minimize adherence of ice, mist or water thereto (rendering particulate materials free flowing, in general, e.g. making them hydrophobic B01J2/30); Thawing or antifreeze materials for application to surfaces (used in liquids for heat-transfer, heat-exchange or heat-storage or for the production of heat or cold other than by combustion, e.g. radiator liquids, C09K5/00) - C08K 3/22: of metals - C08K 3/34: Silicon-containing compounds - Y10S 106/02: Perlite - Y10S 252/963: Humidity or moisture indicators - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract The invention relates to a process for insulating surfaces for the purpose of preventing or reducing occurrence of condensation on the surface, comprising applying to the surface a layer of a coating composition containing a binder and, distributed therein, granules of an expanded inorganic material having a bulk density of at least 150 kgs/m.sup.3. The invention also provides for a composition suitable for carrying out such process, comprising a binder and granules of an expanded inorganic material of the nature indicated. ## Claims ### Claim 1 A process for minimizing accumulation of moisture on a cold surface exposed to humidity conditions which tend to cause condensation on said surface, which comprises feeding to the nozzle of a spray head a premixed sprayable coating composition containing a binder dispersed in a liquid vehicle having distributed therein water-absorptive granules of heat-expanded perlite having a bulk density of about 60-70 kgs/m.sup.3, said composition being characterized in that the water-absorptive character of said granules is not occluded, in that said binder is either soluble in or physically-dispersible in said liquid vehicle, and in that it dries to an adherent, water-absorptive, insulating coating, and spray-coating said surface for the purpose of minimizing the collection of condensation on said surface with a thin layer of said composition to form said adherent water-absorptive, insulating coating, said granules having a particle size of about 0.01 to about 1.5 mm, being pretreated with a wetting agent, and constituting from 5 to 20 percent by weight of the composition. ### Claim 2 (depends on 1) A process according to claim 1, in which the binder is dissolved in said liquid vehicle. ### Claim 3 (depends on 1) A process according to claim 1, in which the binder is not dissolved in said liquid vehicle, but physically-dispersed therein. ### Claim 4 (depends on 3) The process according to claim 3, in which the liquid vehicle is water and the binder is a vinyl-acrylic copolymer. ### Claim 5 (depends on 1) The process of claim 1, in which the binder is selected from the group consisting of polyvinyl acetate, polyvinyl acrylate, and chloro caoutchouc. ### Claim 6 (depends on 5) The process of claim 5, in which the binder is polyvinyl acrylate and the liquid vehicle is water. ### Claim 7 (depends on 1) A process of claim 1, in which the coating composition contains said granules in the range of about 5 to 20 percent by weight, and said binder in the range of about 3 to 15 percent by weight. ### Claim 8 (depends on 1) A process according to claim 1, characterized in that the coating composition is applied to the surface to a thickness of 0.5 to 5 mm.