# US 10,479,892 B2 · Functional group asphalt modifiers, methods of modifying asphalt, asphalt compositions and methods of making

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- Number: US 10,479,892 B2
- Document ID: US10479892B2
- Status: Granted
- Kind: B2
- Application number: 15/889,145
- Filed: 2018-02-05
- Published: 2018-06-07
- Granted: 2019-11-19
- Earliest claimed: 2009-03-08
- Assignees: Lehigh Technologies, Inc.
- Applicants: Lehigh Technologies, Inc.
- Inventors: Premnathan Naidoo; Vernon Patrick Keating
- Web page: https://patentgrep.com/patent/US10479892B2

## CPC

- C08L 95/00: Compositions of bituminous materials, e.g. asphalt, tar, pitch
- C08L 9/06: Copolymers with styrene
- C08L 21/00: Compositions of unspecified rubbers
- C08L 23/00: Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L 23/10: Homopolymers or copolymers of propene
- C08L 53/00: Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L 55/00: Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L 91/06: Waxes
- C09D 195/00: Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
- C08L 91/00: Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L 2205/03: containing three or more polymers in a blend
- Y02A 30/30: in transportation, e.g. on roads, waterways or railways
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

An asphalt additive comprising a primary rheology modifying component and a secondary rheology modifying component, and asphalt compositions and products having such additive incorporated therein. The primary rheology modifying component is generally a polymer, and the secondary rheology modifying component may comprise a petroleum micro-wax.

## Claims

### Claim 1

An asphalt comprising:
ground tire rubber;
a first component comprising a petroleum asphalt; and,
a second component comprising particles formed from a melted mixture of a resin and a binder;
wherein, the second component is dispersed within the first component;
wherein the resin comprises polypropylene and polymers having glycidyl functionality; and,
wherein the binder comprises polyethylene by-product waxes.

### Claim 2 (depends on 1)

The asphalt of claim 1, wherein the resin comprises glycidyl alkylacrylate functionality.

### Claim 3 (depends on 1)

The asphalt of claim 1, wherein the resin comprises glycidyl methacrylate functionality.

### Claim 4 (depends on 1)

The asphalt of claim 1, wherein the resin comprises an alkylene-alkyl acrylate-glycidyl alkylacrylate polymer.

### Claim 5

A method of treating a petroleum asphalt, the method comprising:
contacting the petroleum asphalt with an additive to form a treated asphalt, wherein the additive comprises polypropylene, by-product wax, and polymers having glycidyl functionality, wherein the glycidyl functionality is selected from the group consisting of glycidyl alkylacrylate functionality, glycidyl methacrylate functionality, alkylene-alkyl acrylate-glycidyl alkylacrylate functionality, and ethylene-butyl acrylate-glycidyl methacrylate functionality; and
adding ground tire rubber to the treated asphalt.