Multifunctional Additives
This disclosure provides for compositions and applications thereof of multifunctional additive systems for asphalt modifications. These systems comprise multiple functional additives in one source, and thus can reduce or eliminate the need for multiple redundant equipment, such as pumps and meters for the addition of each additive. In certain embodiments, the additive system is such that it can be stored and/or transferred without the need for or with reduced need for mixing.
1 . An acid composition comprising:
a rheologically modifying acid or a rheologically modifying acidic solution; and
encapsulated additive particles,
wherein the encapsulated additive particles have an average diameter size of from about 0.5 mm to about 10 mm and are in a ratio of encapsulated additive particles to the rheologically modifying acid or the rheologically modifying acidic solution of from about 0.1:1 to about 3:1,
for utilization in asphalt compositions.
2 . The composition of claim 1 ,
wherein the encapsulated additive particles have an average diameter size of from about 1 mm to about 5 mm and are in a ratio of encapsulated additive particles to the rheologically modifying acid or the rheologically modifying acidic solution of from about 0.5:1 to about 1.5:1.
3 . The composition of claim 1 ,
wherein the encapsulated additive particles have an average diameter size of from about 2 mm to about 4 mm and are in a ratio of encapsulated additive particles to the rheologically modifying acid or the rheologically modifying acidic solution of from about 0.8:1 to about 1:1.
4 . The composition of claim 1 , wherein the rheologically modifying acid is phosphoric acid.
5 . The composition of claim 1 , wherein the rheologically modifying acid is selected from the group consisting of acid anhydride, diphosphorus pentaoxide (P 2 O 5 ), sulfuric acid (H 2 SO 4 ), derivatives of H 2 SO 4 , R—(COO)x-SO 3 H, boric acid, and combinations thereof.
6 . (canceled)
7 . The composition of claim 1 , wherein the encapsulated additive particle comprises an additive encapsulated by a hydrocarbon.
8 - 9 . (canceled)
10 . The composition of claim 7 , wherein the hydrocarbon has a melting point of greater than 70° C. and/or is a water insoluble polymer.
11 - 12 . (canceled)
13 . The composition of claim 7 , wherein the hydrocarbon is a wax.
14 . (canceled)
15 . The composition of claim 1 , wherein the encapsulated additive particle comprises from about 10 wt % to about 90 wt % of the total particle.
16 . The composition of claim 1 , wherein the encapsulated additive particle comprises from about 25 wt % to about 75 wt % of the total particle.
17 . The composition of claim 1 , wherein the encapsulated additive particle comprises from about 40 wt % to about 60 wt % of the total particle.
18 . The composition of claim 1 , wherein the composition has a viscosity of from about 500 cP to about 100,000 cP.
19 . The composition of claim 1 , wherein the composition has a viscosity of from about 10,000 cP to about 60,000 cP.
20 . The composition of claim 1 , wherein the density of the encapsulated additive particles is from about 0.1 g/ml to about 6.0 g/ml.
21 . The composition of claim 1 , wherein the density of the encapsulated additive particles is from about 0.5 g/ml to about 4.0 g/ml.
22 . (canceled)
23 . The composition of claim 1 , wherein the encapsulated additive is a multifunctional asphalt modifier.
24 - 25 . (canceled)
26 . The composition of claim 1 , wherein the encapsulated additive further comprises an inorganic material selected from the group consisting of chlorides, borates, phosphates, sulfates, bromides, iodides, fluorides, carbonate and combinations thereof.
27 . The composition of claim 1 , wherein the encapsulated additive is an inorganic oxide.
28 - 31 . (canceled)
32 . The composition of claim 1 , wherein the encapsulated additive particles comprise a mixture of encapsulated additive particles having a plurality of different additives contained in separate particles.
33 . The composition of claim 1 , wherein the encapsulated additive particles comprise a plurality of ingredients that do not react together.
34 . The composition of claim 32 , wherein the mixture of encapsulated additive particles at least comprises additive particles comprising CuO as the additive and at least one separate nonreactive additive particle comprising an asphalt modifier as the additive.
35 . A method of preparing a modified asphalt, the method comprising combining the phosphoric acid composition of claim 1 , with the asphalt to form a mixture of the asphalt and the phosphoric acid composition.
36 . (canceled)
37 . A method of preparing a modified asphalt, the method comprising:
i) providing a source of the phosphoric acid composition of claim 1 in a storage container; and
ii) pumping the phosphoric acid composition from the storage container to a mixing container wherein the phosphoric acid composition and an asphalt are combined in the mixing container or injecting the phosphoric acid into a conduit containing the asphalt, wherein the phosphoric acid composition and an asphalt are combined in the conduit for shipment.
38 - 46 . (canceled)