Solid binders
US-2019382583-A1 · Dec 19, 2019 · US
Bituminous composition solid at ambient temperature
US11873406B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11873406-B2 |
| Application number | US-201917296410-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 6, 2019 |
| Priority date | Dec 10, 2018 |
| Publication date | Jan 16, 2024 |
| Grant date | Jan 16, 2024 |
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Abstract
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A bituminous composition comprising at least one bitumen base, at least one compound of general formula (I): Ar1-R 1 —Ar 2 (I), and at least one compound of general formula (II): R 2 —(NH) n CONH—X—(NHCO) p (NH) n —R′ 2 (II). The invention also concerns a process for the preparation of said bituminous composition.
First claim
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The invention claimed is: 1. A bituminous composition comprising at least: a) a bitumen base, b) 2′,3-bis[(3-[3,5-di(tert-butyl)-4-hydroxyphenyl]propionyl)]propionohydrazide, and c) N,N′-ethylenedi(stearamide) of formula C 17 H 35 —CONH—CH 2 —CH 2 —NHCO—C 17 H 35 . 2. The bituminous composition as claimed in claim 1 , comprising from 0.1 to 10% by weight of 2′,3-bis[(3-[3,5-di(tert-butyl)-4-hydroxyphenyl]propionyl)]propionohydrazide with respect to the total weight of the bituminous composition. 3. The bituminous composition as claimed in claim 1 , comprising from 0.1% to 10% by weight of N,N′-ethylenedi(stearamide) of formula C 17 H 35 —CONH—CH 2 —CH 2 —NHCO—C 17 H 35 by weight, with respect to the total weight of the bituminous composition. 4. The bituminous composition as claimed in claim 1 , comprising from 80 to 99.8% by weight of one or several bitumen bases, with respect to the total weight of the bituminous composition. 5. The bituminous composition as claimed in claim 1 , comprising: a) from 80 to 99.8% by weight of one or several bitumen bases, b) from 0.1 to 10% by weight of 2′,3-bis[(3-[3,5-di(tert-butyl)-4-hydroxyphenyl]propionyl)]propionohydrazide, and c) from 0.1 to 10% by weight of N,N′-ethylenedi(stearamide) of formula C 17 H 35 —CONH—CH 2 —CH 2 —NHCO—C 17 H 35 , with respect to the total weight of the bituminous composition. 6. The bituminous composition as claimed in claim 1 , wherein the bitumen base has a penetrability at 25° C., measured according to standard EN 1426, lower than or equal to 200 1/10 mm. 7. The bituminous composition as claimed in claim 1 , having a penetrability at 25° C., measured according to standard EN 1426, lower than or equal to 40 1/10 mm. 8. The bituminous composition as claimed in claim 1 , having a ring-and-ball softening point, measured according to standard EN 1427, of from 80 to 120° C. 9. The bituminous composition as claimed in claim 1 , having a deformability at 65° C. lower than or equal to 50%. 10. The bituminous composition as claimed in claim 1 , having a viscosity at 160° C., V160, measured according to standard EN 13702, lower than or equal to 500 mPa·s. 11. A process for the preparation of a bituminous composition according to claim 1 , said process comprising contacting, at a temperature ranging from 70° C. to 220° C., the bitumen base with 2′,3-bis[(3-[3,5-di(tert-butyl)-4-hydroxyphenyl]propionyl)]propionohydrazide and N,N′-ethylenedi(stearamide) of formula C 17 H 35 —CONH—CH 2 —CH 2 —NHCO—C 17 H 35 . 12. The process according to claim 11 , which comprises the following steps: a) the introduction of the bitumen base in a reactor equipped with mixing means and its heating at a temperature ranging from 70° C. to 220° C., b) the simultaneous or successive additions of 2′,3-bis[(3-[3,5-di(tert-butyl)-4-hydroxyphenyl]propionyl)]propionohydrazide and N,N′-ethylenedi(stearamide) of formula C 17 H 35 —CONH—CH 2 —CH 2 —NHCO—C 17 H 35 , and c) the mixture of the bituminous composition at a temperature ranging from 70° C. to 220° C., until obtaining a homogenous composition.
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Frequently asked questions
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- What does patent US11873406B2 cover?
- A bituminous composition comprising at least one bitumen base, at least one compound of general formula (I): Ar1-R 1 —Ar 2 (I), and at least one compound of general formula (II): R 2 —(NH) n CONH—X—(NHCO) p (NH) n —R′ 2 (II). The invention also concerns a process for the preparation of said bituminous composition.
- Who is the assignee on this patent?
- Total Marketing Services
- What technology area does this patent fall under?
- Primary CPC classification C08L95/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 16 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).