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POLYESTER POLYOLS AND THEIR USE IN TWO-COMPONENT POLYURETHANE LACQUERS
申请公布号：CA2096803(A1)
申请号：CA19932096803
申请日期：1993.05.21
申请公布日期：1993.11.27
发明人：WAMPRECHT, CHRISTIAN;HENNING, WOLFGANG;PETZOLDT, JOACHIM;MEIXNER, JUERGEN
分类号：C08G18/42;C08G18/68;C08G63/12;C08G63/20;C08G63/52;C08G63/553;C08G63/56;C08J7/04;C09D167/06;C09D175/06;(IPC1-7):C08G63/12
主分类号：C08G18/42
摘要：<p>The present invention relates to polyester polyols which have a hydroxyl number of 80 to 250 and are the reaction product of a) 52 to 60 mole % of a polyol component containing i) 10 to 50 mole % of one or more dihydric aliphatic alcohols having at least two carbon atoms, other than neopentyl glycol, ii) 5 to 40 mole % of one or more trihydric or higher functional aliphatic alcohols having at least 3 carbon atoms, iii) 10 to 40 mole % of one or more cycloaliphatic diols and iv) 10 to 60 mole % of neopentyl glycol, with b) 40 to 48 mole % of a dicarboxylic acid component containing v) 0 to 49.9 mole % of one or more saturated aliphatic dicarboxylic acids or an anhydrides thereof having at least 2 carbon atoms and vi) 50.1 to 100 mole % of one or more unsaturated aliphatic dicarboxylic acids or anhydrides thereof having at least 4 carbon atoms, wherein the percentages of a) and b), i) to iv) and v to vi) add up to 100. The present invention also relates to two-component polyurethane coating compositions containing a polyisocyanate component and a polyhydroxyl component; wherein at least a portion of the polyol component contains the polyester polyols according to the invention and to their use for the production of coatings on plastic moldings.</p>