# US 5,708,062 A · Bitumen compositions

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- Number: US 5,708,062 A
- Document ID: US5708062A
- Status: Granted
- Kind: A
- Application number: 08/722,250
- Filed: 1996-12-13
- Granted: 1998-01-13
- Earliest claimed: 1995-01-30
- Assignees: Elf Atochem S.A.; Enterprise Jean Lefebvre
- Inventors: Jerome Maillet; Jacques Komornicki; Yoshiyuki Miyaki; Hiroshi Mohri; Satoshi Tada; Patrice Perret; Sabine Gazeau; Bernard Brule; Kentaro Shiojiri
- Web page: https://patentgrep.com/patent/US5708062A

## CPC

- C08L 95/00: Compositions of bituminous materials, e.g. asphalt, tar, pitch
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

The invention relates to improved bitumen compositions including: (A) 100 parts of bitumen (B) 0.1 to 10 parts of a copolymer of an alpha-olefin, of an unsaturated epoxide and of an ester of unsaturated carboxylic acid (C) 0.1 to 10 parts of a copolymer of an alpha-olefin and of an ester of unsaturated carboxylic acid, (D) 0 to 10 parts of a thermoplastic elastomer (E) 0 to 10 parts of a polymer which is reactive with (B) (F) 0 to 10 parts of an ethylene/vinyl acetate copolymer. These bitumens are stable when stored and resist rutting.

## Claims

### Claim 1

Improved bitumen compositions including:
(A) 100 parts of bitumen
(B) 0.1 to 10 parts of a copolymer of an alpha-olefin, of an unsaturated epoxide and of an ester of unsaturated carboxylic acid
(C) 0.1 to 10 parts of a copolymer of an alpha-olefin and of an ester of unsaturated carboxylic acid.

### Claim 2 (depends on 1)

Improved compositions according to claim 1, in which (B) is an ethylene/alkyl (meth)acrylate/glycidyl (meth)acrylate copolymer which has up to 65 % by weight of alkyl (meth)acrylate in which the alkyl has from 1 to 10 carbons, and up to 10% by weight of epoxide.

### Claim 3 (depends on 1, 2)

Compositions according to claim 1 or 2, in which (C) is an ethylene/alkyl (meth)acrylate copolymer in which the alkyl has from 1 to 10 carbons and containing up to 65% by weight of (meth)acrylate.

### Claim 4 (depends on 1, 2)

Compositions according to claim 1 or claim 2, in which the quantity of (C) is between 4 and 10 parts.

### Claim 5 (depends on 1, 2)

Compositions according to claim 1 or claim 2, in which the quantity of (B) is between 0.5 and 4 parts.

### Claim 6 (depends on 1, 2)

Compositions according to claim 1 or claim 2, in which the quantity of (C) is approximately 3 to 4 times the quantity of (B).

### Claim 7 (depends on 1, 2)

Compositions according to claim 1 or claim 2, also including:
(D) 0 to 10 parts of a thermoplastic elastomer
(E) 0 to 10 parts of a polymer which is reactive with
(B)
(F) 0 to 10 parts of an ethylene/vinyl acetate copolymer.

### Claim 8 (depends on 7)

Compositions according to claim 7 in which the thermoplastic elastomer (D) is a styrene-butadiene-styrene (SBS) block copolymer.

### Claim 9 (depends on 7)

Compositions according to claim 7 in which the reactive polymer (E) which is reactive with (B) is a poly-alpha-olefin homo- or copolymer grafted or copolymerized with an unsaturated carboxylic acid, an unsaturated carboxylic acid anhydride or derivatives thereof.

### Claim 10

Improved bitumen compositions including:
(A) 100 parts of bitumen;
(B) and/or (B1) 0.5 to 4 parts;
(B) denoting a copolymer of an alpha-olefin, of an unsaturated epoxide and of an ester of unsaturated carboxylic acid, (B1) denoting a copolymer of an alpha-olefin and of an unsaturated epoxide and is different from (B);
(D) 2 to 6 parts of a thermoplastic elastomer (C) and/or (F) 0.5 to 5 parts;
(C) denoting a copolymer of an alpha-olefin and of an ester of unsaturated carboxylic acid; (F) denoting an ethylene/vinyl acetate copolymer.

### Claim 11

Improved bitumen compositions including:
(A) 100 parts of bitumen;
(B) and/or (B1) 0.5 to 4 parts, (B) denoting a copolymer of an alpha-olefin, of an unsaturated epoxide and of an ester of unsaturated carboxylic acid; (B1) denoting a copolymer of an alpha-olefin and of an unsaturated epoxide and is different from (B);
(E) 0.5 to 4 parts of a polymer which is reactive with (B);
(D) 2 to 6 parts of a thermoplastic elastomer;
(C) and/or (F) 0 to 5 parts;
(C) denoting a copolymer of an alpha-olefin and of an ester of unsaturated carboxylic acid;
(F) denoting an ethylene/vinyl acetate copolymer.