EP-4735524-A1 - ASPHALT COMPOSITION WITH AN IMPROVED LIFE SPAN

EP4735524A1EP 4735524 A1EP4735524 A1EP 4735524A1EP-4735524-A1

Abstract

The invention is related to an amine-free mineral adhesion promoter composition for bitumen comprising at least of a non-functionalized polyolefin, a hydroxyl-functionalized propylene-based co- or terpolymer having degree of OH-functionalization between 0.1 and 0.6 mol%, more preferably 0.2 to 0.4 mol%, and an aluminum oxide hydroxide having an elemental metal content from a quantity up to 1.5 wt% of the hydroxyl-functionalized propylene-based co- or terpolymer; to a modified bitumen composition comprising at least: an amine-free mineral adhesion promoter composition according to the invention and neat bitumen; and finally to an asphalt composition comprising the modified bitumen composition according to the invention and some mineral aggregates.

Inventors

JASINSKA-WALC, Lidia
DUCHATEAU, ROBBERT
BOUYAHYI, Miloud
MALUS, Mateusz
SZOT, Wojciech
SOLIMAN, MARIA

Assignees

SABIC Global Technologies B.V.

Dates

Publication Date: 20260506
Application Date: 20240426

Claims (1)

POLY0046-WO-PCT CLAIMS 1. Amine-free mineral adhesion promoter composition for bitumen having a melting temperature (T m ) below 100 °C or not having no melting temperature (T m ) according to the DSC measurement within the description , comprising at least a blend of ^ a non-functionalized polyolefin having a T m below 120 °C, ^ a hydroxyl-functionalized propylene-based co- or terpolymer having a T m below 100°C or no melting temperature (T m ) ) according to the DSC measurement within the description and having a degree of OH-functionalization between 0.1 and 0.6 mol%, more preferably 0.2 to 0.4 mol%. 2. Amine-free mineral adhesion promoter composition according to claim 1, wherein it further comprise an aluminum oxide hydroxide having an elemental metal content from a quantity up to 1.5 wt%, preferably 0.02 to 1.5 wt%, more preferably 0.05 to 1.0 wt%, more preferably 0.1 to 0.7 wt%, more preferably 0.2 to 0.6 wt% of the blend of non-functionalized polyolefin and hydroxyl-functionalized propylene-based co- or terpolymer. 3. Amine-free mineral adhesion promoter composition according to one of the preceding claims, wherein the non-functionalized polyolefin is up to 90 wt% of the blend of non- functionalized polyolefin and hydroxyl-functionalized propylene-based co- or terpolymer. 4. Amine-free mineral adhesion promoter according to one of the preceding claims wherein the non-functionalized polyolefin is selected from the list comprising: polyethylene, poly(ethylene–co–propylene), poly(ethylene–co–1-butene), poly(ethylene–co–1-hexene), poly(ethylene–co–1-octene), polypropylene, poly(propylene–co–ethylene), poly(propylene– co–1-butene), poly(propylene–co–1-hexene), poly(propylene–co–1-octene). 5. Amine-free mineral adhesion promoter composition according to one of the preceding claims, wherein the hydroxyl-functionalized propylene-based co- or terpolymer is selected from the list comprising poly(propylene–co–5-hexen-1-ol), poly(propylene–co–7-octen-1-ol), poly(propylene––co–10-undecen-1-ol), poly(propylene–co–ethylene–co–5-hexen-1-ol), poly(propylene–co–ethylene–co–7-octen-1-ol), poly(propylene–co–ethylene–co–10- undecen-1-ol), poly(propylene–co–1-butene–co–5-hexen-1-ol), poly(propylene–co–1- butene–co–7-octen-1-ol), poly(propylene–co–1-butene–co–10-undecen-1-ol), POLY0046-WO-PCT poly(propylene–co–1-hexene–co–5-hexen-1-ol), poly(propylene–co–1-hexene–co–7- octen-1-ol), poly(propylene–co–1-hexene–co–10-undecen-1-ol), poly(propylene–co–1- octene–co–5-hexen-1-ol), poly(propylene–co–1-octene–co–7-octen-1-ol), poly(propylene– co–1-octene–co–10-undecen-1-ol) or mixtures thereof,. 6. Amine-free mineral adhesion promoter composition according to one of the preceding claims, wherein it further comprise one of the following compounds: poly(styrene–block– butadiene), star–poly(styrene–block–butadiene), poly(styrene–block–[ethylene–co– butylene–graft–(maleic anhydride)]–block–styrene). 7. Amine-free mineral adhesion promoter composition according to the preceding claim, wherein the compound: poly(styrene–block–butadiene), star–poly(styrene–block– butadiene), or poly(styrene–block–[ethylene–co–butylene–graft–(maleic anhydride)]– block–styrene) is added in an quantity of 0.25:1 to 4:1 ratio in regard of the hydroxyl- functionalized propylene-based co- or terpolymer , preferably 1:1 ratio. 8. Amine-free mineral adhesion promoter composition according to one of the preceding claims, wherein the non-functionalized polyolefin is up to 50 wt% of the blend of non- functionalized polyolefin and hydroxyl-functionalized propylene-based co- or terpolymer 9. Modified bitumen composition comprising at least: a. Neat bitumen and b. Amine-free mineral adhesion promoter according to one of the preceding claims. 10. Amine-free modified bitumen composition according to the preceding claim wherein it have at least the followings: ^ Avg. penetration < 80 dmm according to European Standard 1426, and ^ Avg. softening > 46 °C according to European Standard 1427, and ^ Δ softening point < 5 according to European Standard 13399 ^ Adhesion force > 37 nN according to SABIC Internal QNM-AFM method ^ DMT modulus > 1.75 GPa according to SABIC Internal QNM-AFM method ^ Degree of binder coverage on Granite [%] >= 80, preferably >= 90 according to PN- 84/B-06714/22, POLY0046-WO-PCT ^ Degree of binder coverage on Limestone [%] >= 60, preferably >= 70, more preferably >= 80 according to PN-84/B-06714/22, 11. Asphalt composition comprising ^ Modified bitumen composition according to claim 9 or 10 which comprises an amine- free mineral adhesion promoter according to claim 8, in a quantity of 1.0 to 10 wt% of the asphalt composition, and ^ Mineral aggregates in a quantity of 90 to 99 wt% of the asphalt composition. 12. Use of an amine-free mineral adhesion promoter composition according to the claims 1 to 7, in modified bitumen composition. 13. Use of Modified Bitumen composition according to the claims 9 or 10, in roofing application. 14. Use of Modified Bitumen composition according to claim 9 or 10 which comprises an amine- free mineral adhesion promoter according to claim 8 in an asphalt composition. 15. Use of an asphalt composition according to the claim 11, in a road application.

Description

23POLY0046-WO-PCT ASPHALT COMPOSITION WITH AN IMPROVED LIFE SPAN TECHNICAL FIELD OF THE INVENTION [0001] The present invention relates to an asphalt composition with an improved life span, an amine-free mineral adhesion promoter and its use in asphalt composition. TECHNOLOGICAL BACKGROUND OF THE INVENTION [0002] Asphalt is generally constituted from a mixture comprising bitumen and mineral aggregates and optionally additives as amines, which are used as adhesion promoter to improve the affinity of the bitumen to the mineral aggregates. By improving the affinity of bitumen to the mineral aggregates, the asphalt composition is able to have a longer span life. [0003] However, those amines are commonly considered as toxic component and could leak into the environment. [0004] WO2022/101132 disclose the use of hydroxyl-functionalized polyolefins to enhance the mechanical performance of bitumen. [0005] However, hydroxyl-functionalized polyolefins are expensive materials, and therefore, it is difficult to justify their usage inroad or roofing application when large quantities are required. [0006] Therefore, there is a need for a cheaper non-toxic adhesion promoter, which will not deteriorate the mechanical property of the bitumen below the standard such as its penetration, softening point, wheel tracking slope, Indirect tensile strength ratio, degree of binder coverage upon 6h etc., and could eventually improve some of those parameters. SUMMARY [0007] This object is achieved by the present invention. [0008] In a first aspect the present invention relates to an amine-free mineral adhesion promoter composition for bitumen comprising at least a blend of: ^ A non-functionalized polyolefin having a Tm below 120 °C according to the DSC measurement within the description or being amorphous (meaning no melting temperature (Tm) ), 23POLY0046-WO-PCT ^ A hydroxyl-functionalized propylene-based co- or terpolymer having a Tm below 100 °C according to the DSC measurement within the description or be amorphous (meaning no melting temperature (Tm) )and having degree of OH-functionalization between 0.1 and 0.6 mol%, more preferably 0.2 to 0.4 mol%. [0009] In some embodiments, it further comprises an aluminum oxide hydroxide having an elemental metal content from a quantity up to 1.5 wt%, preferably 0.02 to 1.5 wt%, more preferably 0.05 to 1.0 wt%, more preferably 0.1 to 0.7 wt%, more preferably 0.2 to 0.6 wt% of the blend of non- functionalized polyolefin and hydroxyl-functionalized propylene-based co- or terpolymer. [0010] In some embodiments, the blend of non-functionalized polyolefin and hydroxyl- functionalized propylene-based co- or terpolymer consists of up to 90 wt% of the non-functionalized polyolefin is co- or terpolymer. [0011] Preferably, the hydroxyl-functionalized propylene-based co- or terpolymer forms at least 0.5 wt% of the blend of non-functionalized polyolefin and hydroxyl-functionalized propylene-based co- or terpolymer, more preferably at least 1 wt%, more preferably at least 5 wt%, more preferably at least 10 wt%, even more preferably at least 30 wt%, and/or at most 90 wt%, preferably at most 80 wt% more preferably at most 70 wt% more preferably at most 60 wt% more preferably at most 50 wt% more preferably at most 40 wt%. In some embodiment the range of hydroxyl-functionalized propylene-based co- or terpolymer within the blend of non-functionalized polyolefin and hydroxyl- functionalized propylene-based co- or terpolymer could be selected from the following list 0.5 to 90; 0.5 to 80; 0.5 to 70; 0.5 to 60; 0.5 to 50; 0.5 to 40; 0.5 to 30; 0.5 to 20; 0.5 to 10; 0.5 to 5; 1 to 90; 1 to 80; 1 to 70; 1 to 60; 1 to 50; 1 to 40; 1 to 30; 1 to 20; 1 to 10; 1 to 5; 5 to 90; 5 to 80; 5 to 70; 5 to 60; 5 to 50; 5 to 40; 5 to 30; 5 to 20; 5 to 10; 10 to 90; 10 to 80; 10 to 70; 10 to 60; 10 to 50; 10 to 40; 10 to 30; 10 to 20; 20 to 90; 20 to 80; 20 to 70; 20 to 60; 20 to 50; 20 to 40; 20 to 30; 30 to 90; 30 to 80; 30 to 70; 30 to 60; 30 to 50; 30 to 40 wt% of the blend of non-functionalized polyolefin and hydroxyl-functionalized propylene-based co- or terpolymer. [0012] In some embodiments, the non-functionalized polyolefin is selected from the list comprising: polyethylene, poly(ethylene–co–propylene), poly(ethylene–co–1-butene), poly(ethylene–co–1-hexene), poly(ethylene–co–1-octene), polypropylene, poly(propylene–co– ethylene), poly(propylene–co–1-butene), poly(propylene–co–1-hexene), poly(propylene–co–1- octene). 23POLY0046-WO-PCT [0013] In some embodiment, the hydroxyl-functionalized propylene-based co- or terpolymer is selected from the list comprising poly(propylene–co–5-hexen-1-ol), poly(propylene–co–7-octen- 1-ol), poly(propylene––co–10-undecen-1-ol), poly(propylene–co–ethylene–co–5-hexen-1-ol), poly(propylene–co–ethylene–co–7-octen-1-ol), poly(propylene–co–ethylene–co–10-undecen-1-ol), poly(propylene–co–1-butene–co–5-hexen-1-ol), poly(propylene–co–1-butene–co–7-octen-1-ol), poly(propylene–co–1-butene–co–10-und