ELASTOMER COMPOSITE BLENDS AND METHODS FOR PRODUCING THEM

    公开(公告)号:CA2305702A1

    公开(公告)日:1999-04-08

    申请号:CA2305702

    申请日:1998-09-28

    Applicant: CABOT CORP

    Abstract: Elastomer composite blends are produced by novel wet/dry mixing methods and apparatus. In the wet mixing step or stage, fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum reactor to form a mixture in semi-confined flow continuously from the mixing zone through a coagulum zone to a discharge end of the reactor. The particulate filler fluid is fed under high pressure to the mixing zone, such as to form a jet stream to entrain elastomer latex fluid sufficiently energetically to substantially completely coagulate the elastomer with the particulate filler prior to the discharge end. Highly efficient and effective elastomer coagulation is achieved without the need for a coagulation step involving exposure to acid or salt solution or the like. Elastomer composites are produced. Such elastomer composites may be cured or uncured, and combine material properties, such as choice of filler, elastomer, level of filler loading, and macro-dispersion, not previously achieved. The coagulum produced by such wet mixing step, with or without intermediate processing steps, is then mixed with additional elastomer in a dry mixing step or stage to form elastomer composite blends. The additional elastomer to the coagulum may be the same as or different from the elastomer(s) used in the wet mixing step.

    UN MATERIAL MIXTO DE ELASTOMERO Y METODO PARA PRODUCIRLO.

    公开(公告)号:MX337856B

    公开(公告)日:2016-03-16

    申请号:MX2010008684

    申请日:2009-02-05

    Applicant: CABOT CORP

    Abstract: Se describe un método para producir un material mixto de elastómero. El método incluye A) combinar un primer fluido que comprende látex de elastómero con un segundo fluido que comprende material de relleno particulado; B) hacer que el látex de elastómero coagule, con lo cual se forma el grumo de mezcla madre; C) llevar el grumo de mezcla madre hasta un contenido de agua de aproximadamente 1 por ciento en peso hasta aproximadamente 20 por ciento en peso, con lo cual se forma un coágulo deshidratado; D) eliminar el agua a partir del coágulo deshidratado sometiendo el coágulo deshidratado a energía mecánica, con lo cual se ocasiona que el coágulo deshidratado se caliente como resultado de la fricción, al tiempo que se permite que el coágulo deshidratado logre una temperatura de aproximadamente 130°C hasta aproximadamente 190°C, en el cual el contenido de agua se reduce aproximadamente a 0.5% hasta aproximadamente 3% y en el cual sustancialmente todo el decremento en contenido de agua se logra mediante evaporación, con lo cual se produce una mezcla madre plastificada; y E) someter la mezcla madre plastificada a por lo menos 0.3 MJ/kg adicionales de energía mecánica al tiempo que se reduce adicionalmente el contenido de agua.

    ELASTOMER COMPOSITE BLENDS, METHOD AND APPARATUS FOR PRODUCING SAME

    公开(公告)号:CA2773595C

    公开(公告)日:2014-02-04

    申请号:CA2773595

    申请日:2010-09-16

    Applicant: CABOT CORP

    Abstract: A wet mix elastomer composite comprising carbon black dispersed in an elastomer including a blend of a natural rubber and styrene-butadiene rubber. When the wet mix elastomer composite is processed with CTV Method 1, the vulcanized wet mix elastomer composite exhibits a resistivity that A) has a natural logarithm satisfying the equation In(resistivity) >= -0.1(loading) + x, where x is 14, or B) is at least 2.9 times greater than the resistivity of a vulcanized dry mix elastomer composite having the same composition and prepared using Comparative CTV Method 1.

    An elastomer composite and method for producing it

    公开(公告)号:AU2009210723B2

    公开(公告)日:2012-08-16

    申请号:AU2009210723

    申请日:2009-02-05

    Applicant: CABOT CORP

    Abstract: A method of producing an elastomer composite. The method includes A) combining a first fluid comprising elastomer latex with a second fluid comprising particulate filler; B) causing the elastomer latex to coagulate, thereby forming masterbatch crumb; C) bringing the masterbatch crumb to a water content of about 1 weight percent to about 20 weight percent, thereby forming a dewatered coagulum; D) removing water from the dewatered coagulum by subjecting the dewatered coagulum to mechanical energy, thereby causing the dewatered coagulum to heat as a result of friction, while allowing the dewatered coagulum to achieve a temperature of about 130°C to about 19O°C, wherein water content is reduced to about 0.5 % to about 3 % and wherein substantially all of the decrease in water content is accomplished by evaporation, thereby producing a masticated masterbatch; and E) subjecting the masticated masterbatch to at least an additional 0.3 MJ/kg of mechanical energy while further reducing the water content.

    49.
    发明专利
    未知

    公开(公告)号:AT552044T

    公开(公告)日:2012-04-15

    申请号:AT04028180

    申请日:1998-09-28

    Applicant: CABOT CORP

    Abstract: Elastomer composite blends are produced by novel wet/dry mixing methods and apparatus. In the wet mixing step or stage, fluid streams of particulate filler and elastomer latex are fed to the mixing zone of a coagulum reactor to form a mixture in semi-confined flow continuously from the mixing zone through a coagulum zone to a discharge end of the reactor. The particulate filler fluid is fed under high pressure to the mixing zone, such as to form a jet stream to entrain elastomer latex fluid sufficiently energetically to substantially completely coagulate the elastomer with the particulate filler prior to the discharge end. Highly efficient and effective elastomer coagulation is achieved without the need for a coagulation step involving exposure to acid or salt solution or the like. Elastomer composites are produced. Such elastomer composites may be cured or uncured, and combine material properties, such as choice of filler, elastomer, level of filler loading, and macro-dispersion, nor previously achieved. The coagulum produced by such wet mixing step, with or without intermediate processing steps, is then mixed with additional elastomer in a dry mixing step or stage to form elastomer composite blends. The additional elastomer to the coagulum may be the same as or different from the elastomer(s) used in the wet mixing step.

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