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Composite thermoplastic polymers based on reaction with biorenewable oils

A technology of thermoplastic polymers and polymers, which can be applied in the direction of on-site paved concrete pavement, building construction, roads, etc., and can solve problems such as performance enhancement

Inactive Publication Date: 2018-01-19
CARGILL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While thermoplastic polymers and waxes have been used in bitumen as modifiers to improve various aspects of performance, interesting synergistic benefits from the use of composite modifiers containing thermoplastic polymers and biorenewable-based products could lead to Available performance enhancements

Method used

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  • Composite thermoplastic polymers based on reaction with biorenewable oils
  • Composite thermoplastic polymers based on reaction with biorenewable oils
  • Composite thermoplastic polymers based on reaction with biorenewable oils

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Example 1: Use of sulfurized vegetable-based oils as polymer compatibilizers and crosslinkers

[0079] Two polymer-modified asphalt blends were compared: one in which elemental sulfur was added directly to the asphalt to crosslink the SBS (blend A) after the conventional asphalt polymer modification procedure, and the other in which A sulfurized vegetable-based oil without crosslinker was added to the bitumen prior to SBS (blend B).

[0080] The Multiple Stress Creep and Recovery procedure under AASHTO T350 is a procedure designed to measure the elasticity of asphalt binders by repeating the 1-second creep and 9-second recovery steps. This procedure is particularly useful for evaluating the performance of polymer-modified asphalts. Using the strain responses from the creep and recovery steps, percent recovery (R%) was calculated as a measure of the ratio of recoverable strain during the 9 second recovery period to the total strain applied at the end of the 1 second c...

Embodiment 2

[0104] Example 2: Use of sulfurized vegetable-based oils as polymer compatibilizers and crosslinkers:

[0105] Two polymer-modified asphalt blends were compared: one in which elemental sulfur was added directly to the asphalt to crosslink the SBS (blend A) after the conventional asphalt polymer modification procedure, and the other in which A sulfurized vegetable-based oil without crosslinker was added to the bitumen prior to the polymer (blend B).

[0106] Blend A is a modified asphalt binder comprising:

[0107] • 95.56% pure asphalt binder graded PG64-22 (PG 65.7-24.9) by weight of the blend.

[0108] • 4.2% refined soybean oil by weight of the blend.

[0109] • 0.24% styrene-butadiene styrene (Kraton D-1192) by weight of the blend.

[0110] • 0.004% elemental sulfur by weight of the blend.

[0111] Blend B is a modified asphalt binder comprising:

[0112] • 95.56% pure asphalt binder graded PG64-22 (PG 65.7-24.9) by weight of the blend.

[0113] • 4.2% sulfurized r...

Embodiment 3

[0125] Example 3: Use of sulfurized vegetable-based oils as polymer compatibilizers and crosslinkers:

[0126] Two polymer-modified asphalt blends were compared: one in which elemental sulfur was added directly to the asphalt to crosslink the SBS (blend A) after the conventional asphalt polymer modification procedure, and the other in which A sulfurized vegetable-based oil without crosslinker was added to the bitumen prior to the polymer (blend B).

[0127] Blend A is a modified asphalt binder comprising:

[0128] • 95.56% pure asphalt binder graded PG64-22 (PG 65.7-24.9) by weight of the blend.

[0129] • 4.2% refined soybean oil by weight of the blend.

[0130] • 0.24% styrene-butadiene styrene (Kraton D-1192) by weight of the blend.

[0131] • 0.004% elemental sulfur by weight of the blend.

[0132] Blend B is a modified asphalt binder comprising:

[0133] • 95.56% pure asphalt binder graded PG64-22 (PG 65.7-24.9) by weight of the blend.

[0134] 4.2% polymeric vege...

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Abstract

Provided herein is a polymeric composition, comprising a random copolymer comprising three or more distinct monomers, wherein a first monomer is a bio-renewable oil and at least one monomer has been polymerized into a thermoplastic polymer. Also provided herein is a modified asphalt for use in several asphalt end-use applications, comprising an asphalt binder in an amount ranging from about 60-99.9 wt%, an asphalt modifier in an amount ranging from about 0.1-40 wt%, wherein the asphalt modifier comprises about 1-75 wt% of a thermoplastic polymer and a remaining balance of bio-renewable oil.

Description

technical field [0001] The present disclosure relates to combinations of reacted and unreacted biorenewable oils and thermoplastic polymer products that are blended into asphalt to reinforce virgin asphalt and / or contain recycled and / or aged asphalt The properties of the pavement material. Background technique [0002] The latest technological challenges facing the asphalt industry have created opportunities for the introduction of agricultural based products to enhance the overall performance of asphalt. While thermoplastic polymers and waxes have been used in bitumen as modifiers to improve various aspects of performance, interesting synergistic benefits from the use of composite modifiers containing thermoplastic polymers and biorenewable-based products could lead to Available performance enhancements. Such performance enhancements may include, for example and without limitation: extending the usable temperature index (UTI) of asphalt; regenerating aged asphalt while im...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08F293/00C08L7/00C08L9/00C08L91/00E01C7/26
CPCC08L91/00C08K3/06C08L2555/22C08L2555/62C08K5/14C08L95/00C08L9/06C08L2555/64
Inventor T·库尔斯H·塔巴塔巴伊
Owner CARGILL INC
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