Abstract: Composition adapted to improve the rheological properties of cement-based products and more especially to increase the duration of the workability of concrete ready to use, characterized in that it comprises, in the form of a ternary mixturea superplasticizing or water-reducing agent having a dispersing effect,a stabilizing agent capable of forming a chelate with the calcium ions of the cement-based product, anda polycarboxylic polymer dispersing agent.
Type:
Grant
Filed:
December 28, 1993
Date of Patent:
October 22, 1996
Assignee:
C F P I
Inventors:
Joseph Schapira, Jean-Claude Cheminaud, Jean-Jacques Gasse, Eric Hadzamann, Joel Bonnin
Abstract: Phytopharmaceutical wettable powder comprising at least one phytopharmaceutical active substance which is solid at ambient temperature and at least one pulverulent inert filler, characterized by the fact that the constitutive particles of the filler constitute a support or carrier for the active substance comprised within a liquid composition, said active substance being selected from the group comprising:the esters of the family of the parahydroxybenzonitriles of the group comprising bromoxynil octanoate, bromoxynil heptanoate, bromoxynil butyrate, ioxynil octanoate, ioxynil heptanoate, ioxynil butyrate,the triazines of the group comprising simazine, atrazine and ametryne,the dinitroanilines of the group comprising butraline, pendimethaline, trifluraline, orizaline,the substituted ureas of the group comprising diuron, isoproturon, ethidimuron,the sulphonylureas of the group comprising especially chlorsulfuron.
Type:
Grant
Filed:
January 3, 1994
Date of Patent:
December 20, 1994
Assignee:
C F P I
Inventors:
Joseph Schapira, Jacques Schild, Jacques Pecheur, Ange C. Guerin, Dominique Ambrosi, Jean-Jacques Fuchs, Bernard Guyenet
Abstract: Anti-clumping product for salts, simple and complex fertilizers as well as for nitrogenous derivatives, especially on the basis of ammonium nitrate, which might in particular be used in connection with explosives, consisting of a metallic salt of an acid phosphate ester having the general formulas I and II: ##STR1## wherein: R.sub.1 designates an alkylene group having from 2 to 4 carbon atoms,R.sub.1, R.sub.2 and R.sub.3 designate each an alkyl group having from 2 to 24 carbon atoms, or an alkylaryl group whose alkyl part has from 1 to 18 carbon atoms, andn.sub.1, n.sub.2 and n.sub.3 designate an integer from 0 to 15,the cation which is part of the constitution of the above-said metallic salt being a divalent or trivalent cation, especially one of those of the group comprising magnesium, calcium, aluminum, zinc and manganese, it being also possible to select the said cation from the group consisting of sodium and lithium.
Type:
Grant
Filed:
March 1, 1993
Date of Patent:
November 15, 1994
Assignee:
C F P I
Inventors:
Joseph Schapira, Jean-Claude Cheminaud, Pascal Petitbon, Dominique Imbert
Abstract: Process for denaturating water-dilutable paints and solvent-based paints, wherein said paints are treated by washing with the assistance of an aqueous denaturation phase whose pH is from 4.5 to 7 and preferably from 5 to 6 and which contains an effective quantity of at least one denaturation agent consisting of an amine molecule of formula ##STR1## or of formula: ##STR2## in which the substituents R.sub.1 to R.sub.7, which may be identical or different, represent:a hydrogen atom,a radical of formula --O--Re in which Re is chosen from the group comprising hydrogen and a C.sub.1 to C.sub.4 saturated aliphatic hydrocarbon chain, it being understood that the substituents R.sub.5 to R.sub.7 are not simultaneously all hydrogen atoms,or of a hydrate or else of a salt of an organic or inorganic acid salt of said amine molecule, preferably a salt of sulfuric acid, phosphoric acid or hydrochloric acid.
Type:
Grant
Filed:
July 30, 1992
Date of Patent:
July 19, 1994
Assignee:
C F P I
Inventors:
Joseph Schapira, Patrick Droniou, Michel Sudour, Veronique Lerouge nee Bouaffree