Granted Patent
B2
US 12,565,573 · App. 18/450,535 · Granted Mar 3, 2026
Bitumen composites with impregnated zeolites
Inventors:
Elham Fini (Phoenix, AZ); Dong-Kyun Seo (Chandler, AZ); Sand Aldagari (Tempe, AZ); Masoumeh Mousavi (Tempe, AZ)
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Abstract
A bitumen composite includes an amine-impregnated zeolite and bitumen. Forming the bitumen composite includes combining bitumen and an amine-impregnated zeolite to yield a mixture, heating the mixture to yield the bitumen composite.
Claims (28)
1 . A bitumen composite comprising:
an amine-impregnated zeolite comprising a zeolite impregnated with an amine; and
bitumen.
2 . The bitumen composite of claim 1 , wherein the bitumen composite comprises about 0.1 wt % to about 5 wt % of the amine.
3 . The bitumen composite of claim 1 , wherein a weight ratio of the amine to the zeolite is up to about 1.
4 . The bitumen composite of claim 3 , wherein the weight ratio is in a range of about 0.6 to 1.
5 . The bitumen composite of claim 1 , wherein the bitumen composite comprises up to 5 wt % of the zeolite.
6 . The bitumen composite of claim 1 , wherein the amine comprises ethylenediamine.
7 . The bitumen composite of claim 1 , wherein the zeolite comprises a natural or synthetic zeolite.
8 . The bitumen composite of claim 7 , wherein the zeolite comprises a Faujasite-type zeolite.
9 . The bitumen composite of claim 1 , further comprising an aggregate.
10 . The bitumen composite of claim 9 , wherein the aggregate comprises one or more of sand, crushed stone, gravel, and rock dust.
11 . A method of forming a bitumen composite, the method comprising:
combining bitumen and an amine-impregnated zeolite to yield a mixture, wherein the amine-impregnated zeolite comprises a zeolite impregnated with an amine; and
heating the mixture to yield the bitumen composite.
12 . The method of claim 11 , wherein heating the mixture comprises heating the mixture to a temperature of about 100° C. to about 200° C.
13 . The method of claim 11 , wherein heating the mixture comprises heating the mixture for about 1 minute to about 100 minutes.
14 . The method of claim 11 , wherein the bitumen composite comprises about 0.1 wt % to about 5 wt % of the amine.
15 . The method of claim 11 , wherein a weight ratio of the amine to the zeolite is up to about 1.
16 . The method of claim 15 , wherein the weight ratio is in a range of about 0.6 to 1.
17 . The method of claim 11 , wherein the bitumen composite comprises up to 5 wt % of the zeolite.
18 . The method of claim 11 , wherein the amine comprises ethylenediamine.
19 . The method of claim 11 , wherein the zeolite comprises a natural or synthetic zeolite.
20 . The method of claim 19 , wherein the zeolite comprises a Faujasite-type zeolite.
21 . The method of claim 11 , further comprising combining the bitumen composite with an aggregate.
22 . The method of claim 21 , wherein the aggregate comprises one or more of sand, crushed stone, gravel, and rock dust.
23 . A composition comprising:
the bitumen composite of claim 1 .
Assignments (2)
CONFIRMATORY LICENSE
Recorded May 29, 2025
From: ARIZONA STATE UNIVERSITY-TEMPE CAMPUS
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 071454/0704 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Aug 17, 2023
From: FINI, ELHAM; SEO, DONG-KYUN; ALDAGARI, SAND; MOUSAVI, MASOUMEH
To: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
Reel/Frame 064619/0511 →
Continuity (2)
Provisional Application
63371603
· Aug 16, 2022
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