Patent ID: 6740151
Filing Date: 2004-05-25
Classification: C01P,C04B,C08K,C09B,C09C,C09D,D01F,D06M,D06P,D21H,Y10S

Abstract:
A carbon black product having an organic group attached to the carbon black, obtained by a process comprising the step of reacting at least one diazonium salt with a carbon black in a protic reaction medium, wherein said diazonium salt is generated in situ from a primary amine, the protic medium is an aqueous medium, and the primary amine is an amine of the formula AyArNH2, in which:Ar is an aromatic or heteroaromatic radical; y is an integer from 1 to the total number of â€”CH radicals present in the aromatic radical; and A, which can be the same or different when y is greater than 1, is independently a substituent on the aromatic radical selected from: a functional group selected from the group consisting of a branched or unbranched C1-C20 substituted alkyl, branched or unbranched C3-C20 unsubstituted alkyl, unsubstituted or substituted alkenyl, unsubstituted or substituted alkynyl, unsubstituted or substituted heteroaryl, unsubstituted or substituted alkylaryl, and unsubstituted or substituted arylalkyl; a functional group selected from the group consisting of OR, COR, COOR, OCOR, a carboxylate salt, CN, NR2, SO3H, a sulfonate salt, OSO3H, OSO3âˆ’ salts, NR(COR), CONR2, NO2, OPO3H2, a monobasic or dibasic phosphate salt, PO3H2, a monobasic or dibasic phosphonate salt, N&boxH;NR, N2+Xâˆ’, NR3+Xâˆ’, PR3+Xâˆ’, SkR, SO2NRRâ€², SO2SR, SNRRâ€², SSO3H, a SSO3âˆ’ salt, SNQ, SO2NQ, CO2NQ, S-(1,4-piperazinediyl)-SR, 2-(1,3-dithianyl), 2-(1,3-dithiolanyl), SOR, and SO2R; and a linear, branched, aromatic, or cyclic hydrocarbon radical, substituted with one or more of said functional groups and/or halogen(s); wherein R and Râ€², which can be the same or different, are hydrogen; branched or unbranched C1-C20 unsubstituted or substituted alkyl, alkenyl, or alkynyl; unsubstituted or substituted aryl; unsubstituted or substituted heteroaryl; unsubstituted or substituted alkylaryl; or unsubstituted or substituted arylalkyl; k is an integer from 1 to 8; Xâˆ’ is a halide or an anion derived from a mineral or organic acid; and Q is (CH2)w, (CH2)xO(CH2)z, (CH2)xNR(CH2)z or (CH2)xS(CH2)z, wherein x is 1 to 6, z is 1 to 6; and w is 2 to 6; and wherein Ar is optionally further substituted with alkyl(s) and/or halogen(s).