# US 4,394,481 A · Cationic arcylamide and rubber modified asphalts

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- Number: US 4,394,481 A
- Document ID: US4394481A
- Status: Granted
- Kind: A
- Application number: 06/329,902
- Filed: 1981-12-11
- Granted: 1983-07-19
- Earliest claimed: 1981-12-11
- Assignees: Owens-Corning Fiberglas Corporation
- Inventors: Anthony V. Grossi; Leon A. Hagelee; Louis T. Hahn; Alfred Marzocchi
- Web page: https://patentgrep.com/patent/US4394481A

## CPC

- C10C 3/026: {with organic compounds}
- C08L 95/00: Compositions of bituminous materials, e.g. asphalt, tar, pitch
- C10C: WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L95/00; carbon filaments by decomposition of organic filaments D01F9/14)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

Cationic chemically modified asphalts having utility for road construction, repair and maintenance as well as coating for various substrates, including cementitious substrates, glass and metal are provided. These asphalts are the product produced by reacting an acrylamide, asphalt, a vinyl aromatic monomer and a rubbery polymer.

## Claims

### Claim 1

As a composition of matter, the product produced by reacting an acrylamide, asphalt, a vinyl aromatic monomer and a rubbery polymer.

### Claim 2 (depends on 1)

The composition of claim 1 wherein said acrylamide is a compound of the formula
(R.sub.1)(R.sub.2)C.dbd.C(R.sub.3)--C(O)N(R.sub.4)(R.sub.5)
wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from hydrogen and a C.sub.1 -C.sub.3 alkyl; R.sub.4 and R.sub.5 are independently selected from hydrogen, a C.sub.1 -C.sub.3 alkyl and a radical of the formula
--R.sub.6 --N(R.sub.7)(R.sub.8)
wherein R.sub.6 is an alkylene group of 1 to 5 carbon atoms and R.sub.7 and R.sub.8 are independently selected from hydrogen or a C.sub.1 -C.sub.3 alkyl.

### Claim 3 (depends on 2)

The composition of claim 2 wherein R.sub.5 is said radical of the formula --R.sub.6 --N(R.sub.7)(R.sub.8).

### Claim 4 (depends on 3)

The composition of claim 3 wherein R.sub.1 and R.sub.2 are hydrogen.

### Claim 5 (depends on 3)

The composition of claim 3 wherein R.sub.6 is ethylene or propylene.

### Claim 6 (depends on 3)

The composition of claim 3 wherein R.sub.3, R.sub.7 and R.sub.8 are hydrogen or methyl.

### Claim 7 (depends on 2)

The composition of claim 2 wherein said acrylamide is dimethylaminopropylmethacrylamide.

### Claim 8 (depends on 2)

The composition of claim 2 wherein said rubbery polymer is a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer.

### Claim 9 (depends on 8)

The composition of claim 8 wherein said reacting is done by heating at a temperature of at least about 120.degree. C. for at least about 10 hours.

### Claim 10 (depends on 9)

The composition of claim 9 wherein said vinyl aromatic is styrene.

### Claim 11 (depends on 10)

The composition of claim 10 wherein said acrylamide is dimethylaminopropylmethacrylamide.

### Claim 12 (depends on 1)

The composition of claim 1 wherein said acrylamide is a compound having a double bond.

### Claim 13 (depends on 12)

The composition of claim 12 wherein said acrylamide is a secondary or tertiary acrylamide.

### Claim 14

A chemically modified asphalt reaction product produced by charging into a reactor an acrylamide having a double bond, asphalt, a vinyl aromatic monomer, and a rubbery polymer which is a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer and heating the materials at an elevated temperature for several hours so as to produce said reaction product.

### Claim 15 (depends on 14)

The chemically modified asphalt reaction product of claim 14 wherein said heating is done at a temperature of at least about 120.degree. C. for at least about ten hours.

### Claim 16 (depends on 15)

The chemically modified asphalt reaction product of claim 15 wherein said temperature is about 160.degree. C. to about 180.degree. C.

### Claim 17 (depends on 14)

The chemically modified asphalt of claim 14 wherein said acrylamide compound is a compound of the formula
(R.sub.1)(R.sub.2)C.dbd.C(R.sub.3)--C(O)N(R.sub.4)(R.sub.5)
wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from hydrogen and a C.sub.1 -C.sub.3 alkyl; R.sub.4 and R.sub.5 are independently selected from hydrogen, a C.sub.1 -C.sub.3 alkyl and a radical of the formula
--R.sub.6 --N(R.sub.7)(R.sub.8)
wherein R.sub.6 is an alkylene group containing 1 to 5 carbon atoms and R.sub.7 and R.sub.8 are independently selected from hydrogen and a C.sub.1 -C.sub.3 alkyl.

### Claim 18 (depends on 17)

The chemically modified asphalt of claim 17 wherein said vinyl aromatic monomer is styrene and wherein said rubber is a copolymer of styrene and butadiene.

### Claim 19 (depends on 18)

The chemically modified asphalt of claim 18 wherein said acrylamide is dimethylaminopropylmethacrylamide.

### Claim 20 (depends on 14)

The chemically modified asphalt of claim 14 wherein said temperature is at least 150.degree. C.

### Claim 21

A method comprising charging into a reactor an acrylamide compound having a double bond, asphalt, a vinyl aromatic monomer, and a rubbery polymer which is a homopolymer of a diene or a copolymer of a diene and an olefinically unsaturated monomer and heating the materials at an elevated temperature for several hours.