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US 6,713,540 B2Granted
Method for crosslinking asphalt compositions and the product resulting therefrom
AssigneePolimeri Europa Americas, Inc.
InventorsMoises Cisneros Rached, Edward Mazzone, Maria Grazia Cabvaliere
Life of this patent
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Abstract
A process is provided for crosslinking polymer modified asphalt compositions using a combination of a crosslink initiator, crosslink co-agent and crosslinkable polymer, to provide a process that is more reliable and more reproducible and that gives products that have a combination of properties that are superior to conventional sulfur crosslinked compositions.
Claims23
A process for preparation of a cross linked asphalt composition, comprising:
- heating an asphalt composition at a first temperature of from 250 (121° C.) to 430° F. (221° C.), in the presence of a) a crosslinkable polymer and b) a crosslink co-agent;
- adding a crosslinking initiator at a second temperature of from 356° F. to 430° F.;
- and
- agitating the resulting mixture at a temperature of from 360 to 410° F. for a period of time sufficient to complete crosslinking.
1 more element
A crosslinked asphalt composition comprising:
- a) an asphalt composition;
- and
- b) a crosslinked polymer, comprising a polymer having one or more crosslinks that contain one or more residues from a crosslink co-agent, and further containing one or more residues from a crosslink initiator, and wherein said crosslinked-co-agent is a dimaleimide compound or triallyl cyanurate.
Dependencies are inferred from the claim text.