Process for preparing a bituminous binder modified with...

Details Process for preparing a bituminous binder modified with... Process for preparing a bituminous binder modified with...

C - Chemistry, Metallurgy

08

L

400/1608

C08L 95/00 (2006.01) C08G 81/02 (2006.01) C10C 3/02 (2006.01)

Patent

CA 1339940

Process for the production of a bituminous binder modified with synthetic thermoplastic material for building materials, especially road building materials. In this process for the formation of the binder, molten bitumen together with a thermoplast or a thermoplast mixture, preferably an olefin polymer, is subjected to a homogenization treatment. To the mix containing the bitumen and a thermoplast or a thermoplast mixture, there is fed in the form of kinetic energy an amount of energy corresponding to at least the difference between the treatment temperature and the disintegration temperature of the thermoplast or thermoplast mixture and said mix is braked abruptly on an impakt surface. So readily reacting molecule fragments of the thermoplast or thermoplast mixture are formed which enter into a reaction with the bitumen. Preferably, the mix containing bitumen and the thermoplast or a thermoplast mixture is driven through a narrow gap between two mixing tools standing opposite to one another and rotating relatively to one another.

604004

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