Chryso | Date: 2011-12-20
Chryso | Date: 2012-08-09
The invention relates mainly to a polymer comprising a hydrocarbon-based main chain bearing carboxylic groups and polyalkoxylated chains and up to 4% by weight of anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.
Chryso | Date: 2013-07-03
The present invention relates to a method for creating patterns on a surface of the hydraulic binder composition comprising the deposition on the surface of the fresh hydraulic binder composition of a stencil and then application of a deactivating composition (A) on the thereby covered surface.
Chryso, National Polytechnic Institute of Toulouse and French National Institute for Agricultural Research | Date: 2013-12-20
A method for the synthesis of /-alcoxylated glycerol linear carbonic esters, wherein the following are brought into contact at a reaction temperature lower than 220 C.: a quantity of at least one precursor selected from the group consisting of /-alcoxylated glycerol cyclo-carbonates; a quantity of at least one catalyst selected from the group consisting of metal oxides, Lewis acids, organometallic catalysts and mineral bases; and a quantity of at least one organic primer. A composition containing at least one novel /-alkoxylated glycerol linear carbonic ester.
Chryso | Date: 2013-02-06
The present invention is mainly aimed at a set-accelerating admixture for hydraulic compositions comprising, in an aqueous solution: Moreover it is directed to a method for its preparation as well as to a method for preparing hydraulic compositions comprising the step for adding such an admixture to the hydraulic binder, before, during or after the grinding.