# US 5,703,148 A · Asphalt-polymer compositions, process for making same and uses thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,703,148 A - Document ID: US5703148A - Status: Granted - Kind: A - Application number: 08/414,124 - Filed: 1995-03-16 - Granted: 1997-12-30 - Earliest claimed: 1993-09-09 - Assignees: Total Raffinage Distribution S.A. - Inventors: Yannick Jolivet; Michel Malot; Didier Jamois - Web page: https://patentgrep.com/patent/US5703148A ## CPC - C08L 95/005: {Aqueous compositions, e.g. emulsions} - C08L 95/00: Compositions of bituminous materials, e.g. asphalt, tar, pitch - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract An asphalt-polymer composition containing: a) at least 25 to 97 wt % of an asphalt, b) at least 1 to 25 wt % of a polymer, and c) at least 2 to 50 wt % of aromatic compound(s), wherein the aromatic compound(s) is present in an amount greater than 2 wt %, the at least one aromatic compound(s) and the polymer are present in amounts such that the ratio of amount present of aromatic compound to amount present of polymer is from 0.5 to 10, and the composition has a FRAASS point of less than or equal to -13.degree. C. and a storage stability defined by a ".DELTA. ring-and-ball" and a ".DELTA. penetrability" of less than or equal to 5. Also a process for preparing such asphalt-polymer composition including mixing the asphalt, the polymer and the aromatic compound at a temperature from 190.degree. to 300.degree. C. for a period of time preferably exceeding 30 minutes. The asphalt-polymer composition can be used as a road asphalt, emulsion or surface coating. ## Claims ### Claim 1 Asphalt-polymer composition comprising: a) at least 25 to 97 wt % of an asphalt b) at least 1 to 25 wt % of a polymer c) at least 2 to 50 wt % of at least one aromatic compound derived from petroleum cuts having an initial distillation point above 200 .degree. C., wherein the at least one aromatic compound and the polymer are present in amounts such that the ratio of amount present of aromatic compound to amount present of polymer is from 0.5 to 10, the composition has a FRAAS point of less than or equal to -13 .degree. C., and the composition has storage stability defined by a ".DELTA. ring-and-ball" and a ".DELTA. penetrability" of less than or equal to 5. ### Claim 2 (depends on 1) The composition according to claim 1, wherein the aromatic compound have a content of constituents with aromatic rings of at least 50 wt %. ### Claim 3 (depends on 2) The composition of claim 2 wherein the content of constituents with aromatic rings of the aromatic compound is at least 65 wt %. ### Claim 4 (depends on 1) The composition according to claim 1 wherein the aromatic compound has at least one of: a kinematic viscosity at 100 .degree. C. above 5 mm.sup.2 /s, a Cleveland Flash point above 170 .degree. C., and a content of constituents with aromatic rings of at least 50 wt %. ### Claim 5 (depends on 1) The composition according to claim 1 wherein the initial distillation point is above 300 .degree. C. ### Claim 6 (depends on 5) The composition according to claim 5 wherein the aromatic compound has a kinematic viscosity at 100 .degree. C. above 5 mm.sup.2 /s. ### Claim 7 (depends on 4) The composition according to claim 4 wherein the kinematic viscosity at 100 .degree. C. is above 20 mm.sup.2 /s. ### Claim 8 (depends on 1) The composition according to claim 1 wherein the aromatic compound has a Cleveland Flash Point above 170 .degree. C. ### Claim 9 (depends on 4) The composition according to claim 4 wherein the Cleveland Flash Point is above 200 .degree. C. ### Claim 10 (depends on 1) The composition according to claim 1 wherein the aromatic compound is present in an amount greater than 2 wt % and has: a kinetic viscosity at 100 .degree. C. above 5 mm.sup.2 /s, a Cleveland Flash Point above 170 .degree. C., and a content of constituents with aromatic rings of at least 50 wt %. ### Claim 11 (depends on 10) The composition according to claim 10 wherein the ratio of amount of aromatic compound present to amount of polymer present is from 0.8 to 6. ### Claim 12 (depends on 11) The composition of claim 11 wherein the aromatic compound is a cut from a non-hydrogenating petroleum conversion, a cut from dearomatization of lubricating bases or petroleum cuts, or mixtures thereof. ### Claim 13 (depends on 11) The composition according to claim 11 wherein the polymer has hydrocarbon chains with mobile hydrogens. ### Claim 14 (depends on 13) The composition of claim 13 wherein the polymer is selected from the group consisting of natural and synthetic rubbers. ### Claim 15 (depends on 14) The composition of claim 14 wherein the polymer is a styrene-butadiene or styrene-isoprene copolymer. ### Claim 16 (depends on 15) The composition according to claim 15 wherein the polymer is a linear or sequenced styrene-butadiene-styrene copolymer. ### Claim 17 (depends on 16) The composition according to claim 16 wherein the asphalt is a "natural" asphalt. ### Claim 18 (depends on 16) The composition according to claim 16 wherein the asphalt is a "synthetic" asphalt. ### Claim 19 (depends on 1) A process for preparing a composition according to claim 1 comprising mixing the asphalt, the polymer and the aromatic compound at a temperature from 190 .degree. to 300 .degree. C. ### Claim 20 (depends on 19) The process of claim 19 wherein the mixing is at 220 .degree. C. to 260 .degree. C. ### Claim 21 (depends on 19) The process according to claim 19, wherein the mixing comprises: (i) preparing an asphalt-polymer mixture and mixing the aromatic compound with the asphalt-polymer mixture; or (ii) preparing a mixture comprising the aromatic compound and the asphalt and mixing the polymer with the mixture comprising the aromatic compound and the asphalt; or (iii) preparing a mixture comprising the aromatic compound and the polymer and mixing the asphalt with the mixture comprising the aromatic compound and the polymer; or (iv) the aromatic compound, the asphalt and the polymer are admixed. ### Claim 22 (depends on 1) A road asphalt comprising the composition of claim 1. ### Claim 23 (depends on 1) A road surface coating comprising the composition of claim 1. ### Claim 24 (depends on 1) An emulsion comprising the composition of claim 1. ### Claim 25 (depends on 1) The composition of claim 1 wherein the aromatic compound is present in an amount greater than 2 wt %. ### Claim 26 (depends on 10) The composition of claim 10 wherein the aromatic compound is present in an amount greater 4 wt %. ### Claim 27 (depends on 19) The process of claim 19 wherein the mixing is for a period of time exceeding 30 minutes.