Mixture of substances containing compounds with vinyl groups and stabilizers

    公开(公告)号:AU8435998A

    公开(公告)日:1999-01-04

    申请号:AU8435998

    申请日:1998-06-04

    Applicant: BASF AG

    Abstract: A mixture contains one or more vinyl-containing compounds as component (A) and, as a further component, a stabilizer (B) which contains one or more readily volatile nitroxyl compounds as component (b1), one or more sparingly volatile nitroxyl compounds as component (b2), if required one or more aromatic nitro compounds as component (b3) and, if required, one or more iron compounds as component (b4).Stabilizers (B) contain the components (b1) and (b2), (b1) and (b2) and (b3), (b1) and (b2) and (b4), and (b1), (b2), (b3) and (b4), and the premature polymerization of vinyl-containing compounds during their purification or distillation is inhibited by a process in which a stabilizer (B) is added or the components of stabilizer (B) are added as individual substances or in at least two groups of the components.

    16.
    发明专利
    未知

    公开(公告)号:ES2193556T3

    公开(公告)日:2003-11-01

    申请号:ES98945264

    申请日:1998-08-19

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing particulate polymers P by radically initiated aqueous emulsion polymerization, wherein at least one ethylenically unsaturated monomer is emulsified by means of a dispersing agent in an aqueous medium and polymerized by means of a radical polymerization initiator in the presence of a stable N-oxyl radical so that an aqueous polymer dispersion is obtained. According to the inventive method: a) a peroxide, a hydroperoxide and/or an azoic compound are used as a radical polymerization initiator, whose molar solubility at 25 DEG C and 1 bar in water is greater than or the same as the corresponding molar solubility of tert-butyl hydroperoxide in water and whose decomposition temperature in a polymerization medium is

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