BRANCHED HYDROXYL-FUNCTIONAL POLYESTER RESIN AND ITS USE IN AQUEOUS CROSS-LINKABLE BINDER COMPOSITIONS
    7.
    发明授权
    BRANCHED HYDROXYL-FUNCTIONAL POLYESTER RESIN AND ITS USE IN AQUEOUS CROSS-LINKABLE BINDER COMPOSITIONS 有权
    支链羟基官能聚酯树脂的合成及其在水性可交联粘合剂组合

    公开(公告)号:EP1274756B1

    公开(公告)日:2005-11-09

    申请号:EP01938121.9

    申请日:2001-04-13

    摘要: Branched hydroxyl-functional polyester resin having an average hydroxyl functionality of ⊃ 2, a hydroxyl number of 25 to 300 mg KOH/g, and a number average molecular weight within the range of from 500 to 3,000, which polyester resin comprises polyalkylene oxide groups and, optionally, sulphonate groups, characterised in that the polyester resin comprises the reaction product of: 1) a mixture of carboxylic acids comprising 50 to 80 mole % of an m- and/or p-aromatic and/or cycloaliphatic dicarboxylic acid, 20 to 50 mole % of an aliphatic dicarboxylic acid and/or aliphatic monocarboxylic acid with more than 6 carbon atoms, and, optionally, a tri- or higher-functional acid; and 2) a mixture of alcohols comprising an aliphatic diol with at least 4 carbon atoms and/or a cycloaliphatic diol with at least 4 carbon atoms, a C1-C4 alkoxy polyalkylene oxide glycol and/or C1-C4 alkoxy polyalkylene oxide 1,3-diol having a number average molecular weight of 500 to 3,000, and, optionally, a tri- or higher-functional polyalcohol, wherein the polyester resin has a carboxylic acid number of ≤ 20 mg KOH/g (≤ 0.357 meq COOH groups per g of resin) and, optionally, a sulphonate number of ≤ 4 mg KOH/g (≤ 0,070 meq sulphonate groups per g of resin), the acid groups being at least partly neutralised.