POLYESTER POLYMER
A polyester polyol includes a reaction product obtained from: (i) a polyol including 3 or more hydroxyl groups; (ii) a dicarboxylic acid or an anhydride thereof that includes 3 carbon atoms or fewer between the carboxylic acid groups or the anhydride thereof; (iii) a monocarboxylic acid or an anhydr...
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Zusammenfassung: | A polyester polyol includes a reaction product obtained from: (i) a polyol including 3 or more hydroxyl groups; (ii) a dicarboxylic acid or an anhydride thereof that includes 3 carbon atoms or fewer between the carboxylic acid groups or the anhydride thereof; (iii) a monocarboxylic acid or an anhydride thereof; (iv) optionally a diol; and (v) optionally a dicarboxylic acid or an anhydride thereof that includes greater than 3 carbons between the carboxylic acid groups or the anhydride thereof. A molar ratio of (i)+(iv) to (ii)+(v) ranges from 1.08:1 to 1.75:1, and a molar ratio of (i)+(iv) to (iii) ranges from 1.25:1 to 4:1. The reaction product has a hydroxyl value of from 60 to 300 mg KOH/g, and an acid value of less than 15 mg KOH/g. |
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