US 12,655,269 B2 · Additive compound for warm mix asphalt and process of synthesis thereof

Abstract

The present invention provides additive compound for warm mix asphalt (WMA) for the paving of road surfaces, whereby the additive compounds facilitate the mixing, lay down and compaction of asphalt mixes at low temperatures while retaining the mechanical properties of the asphalt composition. Further, the present invention provides a process of synthesis of the additive compounds. Additionally, the present invention provides a warm mix asphalt formulation involving the additive compounds and a method of preparation thereof. The chemical additives of the present invention are liquid surfactants that ensure reduction of internal friction during manufacturing, and subsequently formulations comprising these chemical additives results in reduction of compaction temperature of the bituminous mixtures.

Claims12

Dependent claims

A warm mix asphalt formulation for pavement of road surfaces, the formulation comprising:

a warm mix asphalt;
an additive compound of Formula I, wherein
and wherein R and R′ are the same or independently selected from C12 to C24 alkyl groups;
and
a diester derivative of oxalic acid and a long chain alcohol, a diester derivative of sebacic acid and a long chain alcohol, or a mixture thereof, wherein the long chain alcohol has carbon atoms ranging from 20 to 24.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/268,461Filed 13 Apr 2021

Priority

IN 20214100820326 Feb 2021

Published

US 2024/0309178 A119 Sep 2024

Granted

16 Jun 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

C08K 5/20
Nitrogen-containing compounds: carboxylic acid amides
C07C 231/02
Preparation of carboxylic acid amides: from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
C07C 231/24
Separation; Purification; Stabilisation; Use of additives: separation; Purification
C07C 233/36
With the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom: having the carbon atom of…

Additive compound for warm mix asphalt and process of synthesis thereof

Life of this patent

Additive compound for warm mix asphalt and process of synthesis thereof

Life of this patent

Abstract

Claims12