HIGHLY FUNCTIONAL, HIGHLY BRANCHED OR HYPERBRANCHED POLYESTERS, THE PRODUCTION THEREOF AND THE USE OF THE SAME

    公开(公告)号:CA2563710C

    公开(公告)日:2012-12-04

    申请号:CA2563710

    申请日:2005-05-25

    Applicant: BASF AG

    Abstract: Highly branched or hyperbranched polyesters are produced by reacting, using an acidic catalyst, (i) an aliphatic, cycloaliphatic, araliphatic or aromatic dicarboxylic acid or monoalkyl or dialkyl esters thereof and a cycloaliphatic diol, with (ii) an aliphatic, cycloaliphatic, araliphatic or aromatic polyol having three or more -OH or polycarboxylic acid having three or more -COOH. The molar ratio -OH to -COOH is from 5:1 to 1:5. The polyesters have a number average molecular weight of at least 500 g/mol, a polydispersity index from 1.2 to 10, a degree of branching from 10% to 99.9% and a glass transition temperature from -40°C to 100°C as measured by differential scanning calorimetry (DSC) in accordance with ASTM 3418/82. The molar ratio of the diol to the polyol is from 0.18 to 8.8. The polyesters can be used in printing inks, adhesives, coatings, foams, coverings, paints, sealants, binders, thixotropic agents, polyaddition or polycondensation building blocks.

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