IP Library Granted Patent US 8,758,597
Granted Patent B2
US 8,758,597 · App. 12/583,437 · Granted Jun 24, 2014

Reclaimed asphalt pavement

Inventor: John D. Osborn (Scott, LA)
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Quick Facts
Patent No.
US 8,758,597
App. No.
12/583,437
Granted
Jun 24, 2014
Kind
B2
Abstract

A saturated elastomeric mixture is disclosed having a cured or vulcanized elastomer crumb rubber and atmospheric distillations bottoms residue is disclosed.

Claims (18)

1. A saturated elastomeric mixture for use in the modification of neet asphalt and the rejuvenation of recycled or oxidized asphalt, comprising:

a mixture consisting of:

a cured or vulcanized elastomer crumb rubber; and

one or more petroleum saturate agents consisting of: atmospheric distillations bottoms residue from the refining of crude oil, vacuum tower bottoms residue from the refining of crude oil, aromatic extracts from the refining of crude oil, paraffinic extracts from the refining of crude oil, used or recycled motor oil, wherein the amorphous elastomer crumb rubber absorbs one or more of the distillations, wherein there is included the addition to the mixture of paraffinic, microcrystalline or aliphatic wax(s) characterized by melting points above 150° F. (65° C.), yielding a pulverulent mixture.

2. A saturated elastomeric mixture for pavement and neet asphalt, comprising:

first, a cured or vulcanized elastomer crumb rubber is included;

second, a liquid refinery fractions mixture, absorbed in amorphous crumb rubber for use in the modification of neet asphalt and the rejuvenation of recycled or oxidized asphalt;

a mixture consisting of:

a cured or vulcanized elastomer crumb rubber; and

one or more petroleum saturate agents consisting of atmospheric distillations bottoms residue from the refining of crude oil, vacuum tower bottoms residue from the refining of crude oil, aromatic extracts from the refining of crude oil, paraffinic extracts from the refining of crude oil, used or recycled motor oil, wherein the amorphous elastomer crumb rubber absorbs one or more distillations; and

wherein the petroleum saturate agent of the mixture in total or part consists of the aromatic hydrocarbons having carbon numbers in the range of C20-50 and include N-methylpyrrolidone, phenol N-N-dimethylformamide, imethylsulfoxide, methlcarbonate, morpholine, and furfural—having an aromatic content of from 50%-90% by weight.

3. The saturated mixture of claim 1 , wherein the wax component is typified by a melt temperature above 150° F. (65° C.) and is:

wax produced using the “Fischer Tropsch” process typified by long-chain aliphatic hydrocarbon with molecular chain length from 40-115 carbon atoms.

4. A saturated elastomeric mixture for use in the modification of neet asphalt and the rejuvenation of recycled or oxidized asphalt, comprising:

a mixture consisting of:

a cured or vulcanized elastomer crumb rubber: and

one or more agents consisting of: atmospheric distillations bottoms residue from the refining of crude oil, vacuum tower bottoms residue from the refining of crude oil, aromatic extracts from the refining of crude oil, paraffinic extracts from the refining of crude oil, used or recycled motor oil, wherein the elastomer crumb rubber absorbs one or more of the distillations, wherein said crumb rubber is about 40% to 90% by weight of the mixture.

5. The saturated mixture of claim 1 , wherein said wax is about from 1% to 30% by weight of the mixture.

Continuity (2)
Provisional Application 61189728 · Aug 22, 2008
Related Publication 20100048771A1 · Feb 25, 2010