# US 10,246,589 B2 · Anti-icing additive composition for bituminous conglomerates > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,589 B2 - Document ID: US10246589B2 - Status: Granted - Kind: B2 - Application number: 15/761,688 - Filed: 2017-06-15 - Published: 2018-12-06 - Granted: 2019-04-02 - Earliest claimed: 2016-06-20 - Assignees: Iterchimica S.R.L. - Applicants: Iterchimica S.R.L. - Inventors: Elisa Bertuletti; Piero Baruzzi; Federica Giannattasio - Web page: https://patentgrep.com/patent/US10246589B2 ## CPC - C08L 95/00: Compositions of bituminous materials, e.g. asphalt, tar, pitch - C08K 3/16: Halogen-containing compounds - C08K 3/26: Carbonates; Bicarbonates - C08K 5/098: Metal salts of carboxylic acids - C08L 83/04: Polysiloxanes - 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 2003/162: {Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride} - C08K 2003/265: {Calcium, strontium or barium carbonate} - C08L 2555/52: Aggregate, e.g. crushed stone, sand, gravel or cement - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE ## Abstract An anti-icing composition suitable for incorporation in bituminous conglomerates for road paving, comprising an alkali metal chloride, an alkaline-earth metal carbonate, an alkali or alkaline-earth metal formate, a polysiloxane and optionally an alkaline-earth metal chloride, in which the polysiloxane is contained in an amount between 0.5 and 2.0% by weight of the total weight of the composition; it is also described a bituminous conglomerate adapted to provide an anti-icing road paving, comprising aggregates, bitumen, filler and from 2 to 6% by weight of such anti-icing composition of the weight of the aggregates. ## Claims ### Claim 1 An ani-icing composition suitable for incorporation in bituminous conglomerates for road paving, comprising an alkali metal chloride, an alkaline-earth metal carbonate, an alkali or alkaline-earth metal formate, a polysiloxane and optionally an alkaline-earth metal chloride, in which the polysiloxane is contained in an amount between 0.5 and 2.0% by weight of the total weight of the composition. ### Claim 2 (depends on 1) The anti-icing composition according to claim 1, comprising an alkali metal chloride and an alkaline-earth metal chloride, wherein said alkali metal chloride is sodium chloride and said alkaline earth metal chloride is calcium chloride. ### Claim 3 (depends on 2) The anti-icing composition according to claim 2, wherein said alkaline earth metal carbonate is calcium carbonate. ### Claim 4 (depends on 3) The anti-icing composition according to claim 3, wherein said formate is an alkali metal formate. ### Claim 5 (depends on 4) The anti-icing composition according to claim 4, consisting of the following components, indicated in percentages by weight of the total weight of the composition: sodium chloride 60-84 sodium formate 5-15 calcium chloride 5-15 calcium carbonate 2-8 polysiloxane 0.5-2.0. ### Claim 6 (depends on 1) The anti-icing composition according to claim 1, wherein said polysiloxane is a polydimethylsiloxane (dimethicone). ### Claim 7 (depends on 6) The anti-icing composition according to claim 6, wherein said polydimethylsiloxane has a viscosity of between 300 and 400 mm2/s. ### Claim 8 (depends on 4) The anti-icing composition according to claim 4, wherein metal formate is sodium formate. ### Claim 9 (depends on 7) The anti-icing composition according to claim 7, wherein said polydimethylsiloxane has a viscosity of between 325 and 375 mm2/s. ### Claim 10 (depends on 1, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80) An anti-icing bituminous formulation comprising from 20 to 70% by weight of the anti-icing composition according to claim 1 and 30 to 80% by weight of bitumen. ### Claim 11 (depends on 10) The bituminous formulation according to claim 10, comprising from 30 to 60% by weight of said anti-icing composition and from 40 to 70% by weight of bitumen. ### Claim 12 (depends on 1) A bituminous conglomerate adapted to provide an anti-icing road paving, comprising aggregates, bitumen, filler and from 2 to 6% by weight of the weight of said aggregates, of said anti-icing composition according to claim 1. ### Claim 13 (depends on 1) A bituminous conglomerate adapted to provide an anti-icing road paving, comprising aggregates, bitumen, filler and from 3 to 5%, by weight of the weight of said aggregates, of said anti-icing composition according to claim 1. ### Claim 14 (depends on 10) A bituminous conglomerate adapted to provide an anti-icing road paving, comprising aggregates, filler and from 3 to 10%, by weight of the weight of said aggregates, of said anti-icing bituminous formulation according to claim 10. ### Claim 15 (depends on 1) A method for producing a bituminous conglomerate, comprising a step of adding, under stirring and at a temperature varying from 130° C. to 200° C., to a mixture of aggregates and filler, bitumen and an anti-icing composition according to claim 1. ### Claim 16 (depends on 10) A method for producing a bituminous conglomerate, comprising the step of adding, under stirring and at a temperature varying from 130° C. to 200° C., to a mixture of aggregates and filler, an anti-icing bituminous formulation according to claim 10. ### Claim 17 (depends on 1) A method for producing an anti-icing composition according to claim 1, which comprises the steps of mixing said alkali metal chloride, said alkali-earth metal carbonate, said alkali or alkaline-earth metal formate, and optionally said alkaline-earth metal chloride to obtain a mixture in the form of a homogeneous powder, and adding said polysiloxane dispersed in a finely divided form to said mixture in the form of a homogenous powder. ### Claim 18 (depends on 17) The method according to claim 17, wherein said step of adding the polysiloxane is performed by spraying the polysiloxane by means of a spray device onto said mixture in the form of a homogeneous powder which is kept under stirring in a mixer. ### Claim 19 (depends on 18) The method according to claim 18, wherein said mixer is a screw mixer.