Method for reducing bitumen and crmb odors

A method for reducing odors including the steps of admixing active agents and a diluting agent to liquid bitumen or to liquid crumb rubber modified bitumen wherein the active agents comprise:

• A:
• 20 to 60 wt.-% of aldehyde(s) selected from:
• A1. alpha-hexyl cinnamaldehyde,
• A2. 2-(4-tert.-butylbenzyl) propionaldehyde,
• A3. 2-benzylidenheptanal,
• or mixtures thereof,
• B:
• 0 to 20 wt.-% of one or more other aldehydes having at least 10 carbon atoms in the molecule,
• C:
• 10 to 40 wt.-% of one or more alcohols having a boiling point of at least 150° C.,
• D:
• 0 to 20 wt.-% of one or more terpenes having a boiling point of at least 150° C.,
• E:
• 0 to 10 wt.-% of ketone(s) having a boiling point of at least 150° C.,
• F:
• 0.3 to 1 wt % of compound(s) selected from:
• F1. one or more compounds comprising 10 carbon atoms and an hydroxyl functional group,
• F2. one or more esters, the ester being an ester of a compound comprising 10 carbon atoms and an hydroxyl functional group, preferably an acetate or a propionate thereof,
• or mixtures thereof,
• G:
• 0 to 10 wt.-% of carbonic acid ester(s), whereby the ester is different from component F;
• calculated on the total weight of active agents.