42.
    发明专利
    未知

    公开(公告)号:DE50105001D1

    公开(公告)日:2005-02-10

    申请号:DE50105001

    申请日:2001-01-18

    Applicant: BASF AG

    Abstract: A water dispersible, radiation curable polyurethane comprises organic aliphatic or alicyclic polyisocyanates, cycloaliphatic diols and/or cycloaliphatic diamines, compounds having at least one isocyanate reactive group and at least one radically polymerizable unsaturated group and compounds having at least one isocyanate reactive group and at least one dispersion aiding group. A water dispersible, radiation curable polyurethane (I) comprises: (A) organic aliphatic or alicyclic polyisocyanates; (B) cycloaliphatic diols and/or cycloaliphatic diamines; (C) compounds having at least one isocyanate reactive group and at least one radically polymerizable unsaturated group; (D) compounds having at least one isocyanate reactive group and at least one dispersion aiding group; (E) optionally compounds having at least two isocyanate reactive groups having a mol. wt. of less than 1000 g/mol; (F) optionally compounds having at least one isocyanate reactive group that are different to (A)-(D). Independent claims are included for: (i) a polyurethane dispersion (II) comprising the polyurethane (I) and optionally 0-10 wt.% of a photochemical and/or thermal initiator and 0-10 wt.% of a UV absorber and a HALS compound; (ii) a process for the coating of substrates by application of the polyurethane dispersion (II), optionally containing conventional paint additives, onto a substrate and curing by means of electron irradiation or UV light under oxygen, or preferably under inert gas; (iii) the resulting coated substrate.

    48.
    发明专利
    未知

    公开(公告)号:DE19929258A1

    公开(公告)日:2000-12-28

    申请号:DE19929258

    申请日:1999-06-25

    Applicant: BASF AG

    Abstract: (Meth)acrylate compound is prepared by esterification with an alcoholic hydroxyl-containing compound using a copper salt as polymerization inhibitor and neutralizing the product with a basic inorganic compound(s). Preparation of (meth)acrylate comprises: (i) esterifying acrylic and/or methacrylic acids with a compound(s) with at least one alcoholic hydroxyl group at 90-150 degrees C in the presence of an acid esterification catalyst, a polymerization inhibitor, comprising a copper(II) salt optionally mixed with a copper (I) salt, the copper sulfide obtained being precipitated and separated after reaction, and a hydrocarbon of b.pt. 60-140 degrees C as water drawing agent; (ii) distilling off excess (meth)acrylic acid at 90-150 degrees C under normal pressure: and (iii) optionally neutralizing the product with a basic inorganic compound(s).

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