中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

21 records (took 0.028 seconds)

    PROCEDIMIENTO MEJORADO PARA LA OBTENCION DE ESTERES PLASTI- FICANTES
    11.
    发明专利
    PROCEDIMIENTO MEJORADO PARA LA OBTENCION DE ESTERES PLASTI- FICANTES 未知

    公开(公告)号：ES8105255A1

    公开(公告)日：1981-06-01

    申请号：ES492599

    申请日：1980-06-19

    Applicant: BASF CANADA INC

    IPC: C08K5/00 ,  C07C67/08 ,  C07C69/44 ,  C07C69/48 ,  C07C69/76 ,  C07C69/80 ,  C08K5/10 ,  C07C69/347 ,  C08K5/11

    Abstract: PROCEDIMIENTO DE OBTENCION DE ESTERES PLASTIFICANTES. CONSISTE EN HACER REACCIONAR UN ACIDO DICARBOXILICO O TRICARBOXILICO, ALIFATICO O AROMATICO, O UN ANHIDRO DEL MISMO CON UN ALCOHOL ALIFATICO CON 1 A 15 ATOMOS DE CARBONO. LA ESTERIFICACION SE REALIZA BAJO IRRADIACION CON MICROONDAS CUYA FRECUENCIA ESTA COMPRENDIDA ENTRE 30 Y 300.000 MHZ, 40-50 MHZ, 891 MHZ O 915-2.450 MHZ. LA TEMPERATURA DE REACCION OSCILA ENTRE 60 Y 300GC. EL ALCOHOL EMPLEADO SE ELIGE ENTRE METANOL, ETANOL, BUTANOL, N-OCTANOL-1, N-OCTANOL-(2), 2-ETILHEXANOL, ALCOHOL N-NONILICO, ALCOHOL ISONONILICO, DECANOL O ISODECANOL. DICHO ALCOHOL SE EMPLEA EN UN EXCESO DE 2 HASTA 2 MOLES POR MOL DE ACIDO O ANHIDRICO.

    TREATMENT OF FINE TAILINGS
    15.
    发明专利
    TREATMENT OF FINE TAILINGS 未知

    公开(公告)号：CA2892982A1

    公开(公告)日：2014-07-24

    申请号：CA2892982

    申请日：2014-01-17

    Applicant: BASF SE ,  BASF CANADA INC

    Inventor： BEVERIDGE ANGELA ,  RAMSAY JOHN ,  MENDEZ PABLO

    IPC: C02F1/56

    Abstract: A process of dewatering a suspension comprising particulate solids dispersed in an aqueous liquid is provided. The particulate solids comprise clay and mineral particles of size below 50 µp?. The process comprises the steps of, (a) subjecting the suspension to a kinetic energy stage to produce a modified suspension; (b) addition of a water-soluble polymer intrinsic viscosity of at least 3 dl/g to the modified suspension of step (a); (c) dewatering the treated suspension of step (b), in which the kinetic energy stage is a shearing stage and/or application of ultrasonic energy to the suspension, wherein the shearing stage comprises subjecting the suspension to shearing employing a shearing device. The process is particularly suited to dewatering of mature fine tailings derived from oil sands tailings.

Patent Agency Ranking