STOCK SOLUTIONS HAVING HIGH CONCENTRATIONS OF POLYMERS BASED ON OILS OF PLANT AND/OR ANIMAL ORIGIN FOR THE PREPARATION OF BITUMEN/POLYMER COMPOSITIONS
申请人:Harders Sylvia
公开号:US20120283365A1
公开(公告)日:2012-11-08
The present disclosure relates to a mother solution free from oil of petroleum origin including at least one oil of vegetable and/or animal origin, from 20% to 50% by mass of polymer, with respect to the mass of the mother solution, with or without at least one cross-linking agent, the oil of vegetable and/or animal origin being acid, with an acid value measured according to the standard NF EN ISO 660 including between 50 and 300 mg KOH/g. This mother solution with a very high concentration of polymer is stable and does not gel and can therefore be diluted and used for preparing cross-linked bitumen/polymer compositions, then bituminous mixes.
USE OF ORGANOGELATOR DERIVATIVES IN BITUMINOUS COMPOSITIONS TO IMPROVE THE RESISTANCE OF SAME TO CHEMICAL STRESS
申请人:Harders Sylvia
公开号:US20130041075A1
公开(公告)日:2013-02-14
The disclosure includes the use in a bituminous composition of an organogelator derivative which has a molar mass no higher than 2,000 g/mol and includes at least one hydrogen bonds donor D, at least one hydrogen bonds acceptor A and at least one compatibilizer agent C in the bitumen, the compatibilizer agent C including a group selected among:
at least one straight hydrocarbon chain including at least 4 carbon atoms, or
at least one aliphatic cycle of 3 to 8 atoms, or
at least one aromatic cycle, or
at least one aliphatic or partly aromatic, or even entirely aromatic, condensed polycyclic system, each cycle including 5 or 6 atoms taken alone or as a mixture, to improve the resistance to aggressive chemical agents, in particular to hydrocarbons, such as gasolines, diesels and/or kerosenes, excluding N,N′-ethylene bis(stearamide) and excluding fatty-chains polyamines obtained by reacting polyalkylene fatty-chains polyamines of general formula (I) R—NH—(CH
2
—CH
2
—CH
2
—NH)
n
—H wherein R is a linear hydrocarbon chain, saturated and/or unsaturated, of 8 to 22 carbon atoms, n being an integer from 1 to 5, with formic acid.