Asphalt compositions comprising ethylene-silane-acrylate terpolymers
The incorporation of ethylene-silane-acrylate terpolymers into asphalt compositions addresses the challenges of storage stability, low temperature ductility, and high temperature elastic recovery, resulting in enhanced performance compared to existing technologies.
WO2025072449A1 Publication Date: 2025-04-03DOW GLOBAL TECHNOLOGIES LLC
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Patent Information
- Application Number
- PCT/US2024/048564
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-09-29
- Filing Date
- 2024-09-26
- Publication Date
- 2025-04-03
AI Technical Summary
Technical Problem
Current asphalt compositions face challenges in achieving storage stability, low temperature ductility, and high temperature elastic recovery, with existing polymer modifiers either lacking stability or having adverse environmental impacts.
Method used
The use of ethylene-silane-acrylate terpolymers in asphalt compositions, which are formulated under low shear conditions, enhances high temperature elastic recovery and low temperature ductility while maintaining storage stability.
Benefits of technology
The ethylene-silane-acrylate terpolymer-modified asphalt compositions demonstrate improved high temperature elastic recovery and low temperature ductility, along with maintained storage stability, addressing the limitations of existing technologies.
✦ Generated by Eureka AI based on patent content.
Abstract
The disclosure is directed to an asphalt composition and methods of producing the asphalt composition, wherein the asphalt composition includes bitumen and ethylene terpolymer, where the ethylene terpolymer is the polymerized reaction product of from 78 to 97 wt.% ethylene monomer, 0.5 to 3 wt.% silane comonomer, and 2.5 to 19 wt.% alkyl acrylate comonomer based on the weight of the ethylene terpolymer, optionally in the presence of at least one silanol condensation catalyst.
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