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1. WO1987004174 - COMPOSITIONS BITUMINEUSES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

1. A composition which comprises:

a bituminous material of from 99 to 50 parts by weight and from 1 to 50 parts by weight of a olefinic polymer selected from the group consisting of
homopolymers and interpolymer of an α-olefin and at
least one comonomer selected from the group consisting of α,β-unsaturated carboxylic acid, ionomer of α,β- unsaturated carboxylic acid, vinyl ester of alkanoic
acids, and carbon monoxide, wherein said polymer has a melting point between 140°F and 350°F (960°C and
176.7°C), a melt flow index ranging from 50 g/10 min to 3000 g/10 min and is dispersible in said bi.tuminous
material.

2. The composition of Claim 1, wherein the
interpolymer is a copolymer of ethylene and an α,β- unsaturated carboxylic acid.

3. The composition of Claim 1, wherein the
olefinic polymer is a homopolymer of ethylene.

4. The composition of Claim 1, wherein the
interpolymer is a copolymer of an α-olefin and a
comonomer selected from the group consisting of at least one of α,β-unsaturated carboxylic acid and carbon monoxide.

5. The composition of Claim 1, wherein the olefinic polymer is an interpolymer of an ethylene and carbon monoxide containing from 1 to 30 percent by weight of carbon monoxide.

6. The composition of Claim 1, wherein the olefinic polymer is an interpolymer of ethylene and at least one of acrylic acid and methacrylic acid wherein said acid in said polymer ranges from 1 to 30 percent by weight.

7. The composition of Claim 6 wherein the olefinic polymer has a melt index ranging from 100 g/10 min to 3000 g/10 min.

8. The composition of any of Claims 1 to 7 wherein the composition includes a filler.

9. The composition of any of Claims 1 to 7 wherein the olefinic polymer is present in an amount ranging from 1 to 50 percent by weight.

10. A composition comprising a bitumen from about 90 to about 99.9 percent by weight, about 0.1 to about 10 percent by weight of at least one interpolymer of an α-olefin and an α,β-ethylenically unsaturated carboxylic acid or ionomer thereof wherein the
interpolymer contains from about 5 to about 30 weight percent of the α,β-ethylenically unsaturated carboxylic acid and about 95 to about 70 weight percent of the α-olefin and wherein the composition is further characterized as being substantially free of α-olefin/ester copolymers.

11. The composition of Claim 10 wherein the interpolymer has a melt flow index ranging from 1.5 g/10 min to about 3000 g/10 min.

12. The composition of Claim 10 wherein the interpolymer contains from about 8 to about 20 percent of acrylic acid, methacrylic acid or mixtures of methacrylic acid and acrylic acid.

13. The composition of Claim 10 including in addition a mineral aggregate.

14. The composition of Claim 10, wherein the interpolymer is present in an amount of about 0.1 to about 5 percent by weight of the composition.