Bituminous composition with improved ‘walk-on-ability’ and its use in roofing applications
AssigneeKraton Polymers U.S. LLC
InventorsGerardus Wilhelmus Jozef Heimerikx, Erik Adrianus Theunis Trommelen
Life of this patent
Estimating the term…
Abstract
Disclosed is a bituminous composition that comprises a bituminous component (A), an elastomer component (B), preferably a block copolymer of a conjugated diene and a monovinylaromatic hydrocarbon, and an additive (C), wherein the additive is a compound of the general formula Ar—R—Ar (I) wherein each “Ar” independently is a benzene ring or fused aromatic ring system of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and “R” is an optionally substituted divalent radical comprising 6 to 20 atoms in the backbone and at least one amide and/or ester group in the backbone. These compositions are disclosed to be particularly useful in the preparing and repair of roofing.
Claims18
A bituminous composition comprising a bituminous component (A), at least one elastomer component (B) selected from the group consisting of polydienes, copolymers of dienes with a monovinylaromatic hydrocarbon, polyacrylates, polysulfides, polysilicones and polyesteramides having elastomeric behavior, and an additive (C), wherein the additive is a compound having the general formula:
- Ar—R—Ar (I)
- wherein each “Ar” independently is a benzene ring or fused aromatic ring system of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and “R” is represented by the formula:
- —R1C(═O)X—R2XC(═O)R1— (V)
- wherein each “R1” is a C1-4 hydrocarbonylene group, “R2” is a C1-10 hydrocarbonylene group, and “X” is a nitrogen atom;
- and “n” is an integer having a value from 1 to 4, said elastomer component (B) being present in an amount in the range of from about 2 to about 20% wt and said additive (C) being present in an amount in the range of from about 0.01 to about 5 weight percent, based on the total bituminous composition.
A roofing felt comprising (i) a bituminous composition comprising a bituminous component (A), at least one elastomer component (B) selected from the group consisting of polydienes, copolymers of dienes with a monovinylaromatic hydrocarbon, polyacrylates, polysulfides, polysilicones and polyesteramides having elastomeric behavior, and an additive (C), wherein the additive is a compound having the general formula:
- AR—R—Ar (I)
- wherein each “Ar” independently is a benzene ring or fused aromatic ring system of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and “R” is
- —R1C(═O)X—R2XC(═O)R1— (V)
- wherein “R1” is a C1-4 hydrocarbonylene group, each “R2” is a C1-10 hydrocarbonylene group, “X” is a nitrogen atom;
- and “n” is an integer having a value from 1 to 4, said elastomer being present in an amount in the range of from about 2 to about 20% wt and said additive (C) being present in an amount in the range of from about 0.01 to about 5 weight percent, based on the total bituminous composition;
- and (i) a filler selected from the group consisting of talc, calcium carbonate and carbon black.
A process for preparing a bituminous composition comprising admixing a bituminous component (A), at least one elastomer component (B) selected from the group consisting of polydienes, copolymers of dienes with a monovinylaromatic hydrocarbon, polyacrylates, polysulfides, polysilicones and polyesteramides having elastomeric behavior, and an additive (C), wherein the additive is a compound of the general formula:
- Ar—R—Ar (I)
- wherein each “Ar” independently is a benzene ring or fused aromatic ring system of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and “R” is represented by the general formula:
- —R1C(═O)X—R2XC(═O)R1— (V)
- wherein each “R1” is a C1-4 hydrocarbonylene group, “R2” is a C1-10 hydrocarbonylene group, and “X” is a nitrogen atom;
- and “n” is an integer having a value from 1 to 4, said elastomer being present in an amount in the range of from about 2 to about 20% wt and said additive (C) being present in an amount in the range of from about 0.01 to about 5 weight percent, based on the total bituminous composition.
A composition useful for preparing or repairing roofs, said composition comprising (i) a bituminous composition prepared by admixing a bituminous component (A), at least one elastomer component (B) selected from the group consisting of polydienes, copolymers of dienes with a monovinylaromatic hydrocarbon, polyacrylates, polysulfides, polysilicones and polyesteramides having elastomeric behavior, and an additive (C), wherein the additive is a compound of the general formula:
- Ar—R—Ar (I)
- wherein each “Ar” independently is a benzene ring or fused aromatic ring system of 6 to 20 carbon atoms, substituted by at least one hydroxyl group, and “R” is represented by the general formula:
- —R1C(═O)X—R2XC(═O)R1— (V)
- wherein each “R1” is a C1-4 hydrocarbonylene group, “R2” is a C1-10 hydrocarbonylene group, and “X” is a nitrogen atom;
- and “n” is an integer having a value from 1 to 4, wherein the elastomer component and the additive are admixed with each other prior to being admixed with the bituminous component for preparing or repairing roofs, said elastomer component being present in an amount in the range of from about 2 to about 20% wt and said additive (C) being present in an amount in the range of from about 0.01 to about 5 weight percent, based on the total bituminous composition;
- and (ii) a filler.
Dependencies are inferred from the claim text.