Abstract: The present invention relates to a process for concentration of silicate-containing minerals and ores by froth flotation, in particular to a reverse flotation process, in the presence of a finely dispersed collecting agent characterized by a specific droplet size distribution.
Type:
Application
Filed:
July 18, 2008
Publication date:
August 26, 2010
Applicant:
CLARIANT (BRAZIL) S.A.
Inventors:
Antonio Pedro De Oliveira Filho, Wendel Johnson Rodrigues
Abstract: A stable, homogenous and viscous softener formulation is claimed which contains less than 50% by weight of an esterquat compound of the formula wherein R1 is —C2H4OH or —C2H4OCOR2, R2 is C11-C21-alkyl or alkenyl and A is an anion, as methylsulfate, bromide, iodide and, preferably, chloride, said esterquat being prepared by esterification of methyldiethanolamine with fatty acids and subsequent quaternization, with preferably methylchloride, the fatty acids containing at least 50% by weight of saturated C18-fatty acid, comprising a final product containing at least 50 mol % of diester quat and at least 10 mol % of monoesterquat and having an acid value of less than 0.12 meq/g of esterquat active material, the rest being water and an organic solvent.
Type:
Application
Filed:
July 3, 2007
Publication date:
December 24, 2009
Applicant:
CLARIANT (BRAZIL) S.A.
Inventors:
Manlio Gallotti, George Italo Pitombeira Nunes, Patricia Ramos P. De Moraes, Natanael De Almeida, Claudia Barge, Gustavo Kume, Denise Aparecida Acacio Paulino
Abstract: A concentrated esterquat composition is claimed which is especially suitable for low temperature process for production of a stable, homogenous and viscous liquid softener formulation. This concentrated esterquat composition consists of from about 50 to 95% by weight of an esterquat compound of the formula wherein R1 is —C2H4OH or —C2H4OCOR2, R2 is C11-C21-alkyl or alkenyl and A is an anion, as methylsulfate, bromide, iodide and, preferably, chloride, said esterquat being prepared by esterification of methyldiethanolamine with fatty acids and subsequent quaternization with preferably methylchloride, the fatty acids containing at least 50% by weight of saturated C18-fatty acid, comprising a final product containing at least 50 mol % of diester quat and at least 10 mol % of monoesterquat and having an acid value of less than 0.120 meq/g of esterquat active material, the rest being water and an organic solvent.
Type:
Application
Filed:
July 3, 2007
Publication date:
November 19, 2009
Applicant:
CLARIANT (BRAZIL) S.A.
Inventors:
Manlio Gallotti, George Italo Pitombeira Nunes, Patricia Ramos P. DeMoraes, Natanael DeAlmeida, Claudia Barge, Gustavo Kume, Denise Aqarecida Acacio