5.
    发明专利
    未知

    公开(公告)号:AT298340T

    公开(公告)日:2005-07-15

    申请号:AT02010129

    申请日:2002-05-10

    Applicant: BASF AG

    Abstract: Purification of triethylene diamine (TEDA) comprises crystallization and extraction of the resulting mother liquor with an extraction agent that is at most only slightly miscible with the solvent of the mother liquor but in which TEDA is soluble. Following extraction, the treated mother liquor with reduced TEDA content and/or the extraction agent enriched in TEDA is recycled to the process. A process for the purification of triethylene diamine (TEDA) by evaporation and feeding the TEDA vapor to a liquid solvent followed by crystallization is characterized in that following crystallization of the TEDA the resulting mother liquor is extracted with an extraction agent that is at most only slightly miscible with the solvent of the mother liquor but in which TEDA is soluble. Following extraction, the treated mother liquor with reduced TEDA content and/or the extraction agent enriched in TEDA is recycled to the process.

    6.
    发明专利
    未知

    公开(公告)号:DE19533608A1

    公开(公告)日:1997-03-13

    申请号:DE19533608

    申请日:1995-09-11

    Applicant: BASF AG

    Abstract: Positive-working radiation-sensitive mixt. is based on (a) either (a-1) water-insol. organic polymeric binder(s) with acid-labile gps., rendered soluble in aq. alkaline soln. by the action of acid or (a-2.1) a water-insol. polymeric binder, which is soluble in aq. alkaline soln., and (a-2.2) a low mol. organic cpd., which is rendered more soluble in an aq. alkaline developer by the action of an acid; (b) organic photo-acid(s); and opt. (c) organic cpd(s). other than (b). The novelty is that at least one of (a-1), (a-2.1), (a-2.2), (b) and (c) contains a gp. of formula -O N -R4 (I) or (c) is of formula O-CO-Ä(CH2Ün-CH2-N R3 (II); in which R = 1-6 C alkyl; n = 1-6.

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