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1.发明授权Low VOC, coating compositions having improved flexibility and impact resistance based upon nonlinear, low-molecular weight polyester polyol resins 失效低VOC，基于非线性低分子量聚酯多元醇树脂具有改进的柔性和耐冲击性的涂料组合物公开(公告)号：US06992133B2
公开(公告)日：2006-01-31
申请号：US10375522
申请日：2003-02-27
CPC分类号： C09D175/06 , B05D7/00 , C08G18/4063 , C08G18/423 , C08L33/06 , C08L67/00 , C09D133/066 , C09D167/00 , C08L2666/14 , C08L33/00
摘要： Coating compositions based on nonlinear, low molecular weight, polyester-based polyols having low viscosity and high solids content made by reacting a branched, polyhydric alcohol having at least three hydroxyl groups, such as trimethylolpropane; a glycol or diol; and a compound selected from the group consisting of a aliphatic or aromatic dicarboxylic acid, C1–C6 alkyl ester, anhydride, diacid halide, or mixtures thereof. The nonlinear, polyester-based polyols are quite effective in maintaining a high solids content while lowering viscosity when blended with other coating resins, such as acrylic resins, making the coating resins more effective in cured coatings by improving flexibility, impact resistance and hardness without adversely affecting appearance, solvent resistance, and/or accelerated weathering. This invention also relates to the process of coating a substrate with these coating compositions.
摘要翻译： 基于非线性，低分子量的聚酯基多元醇的涂料组合物，其具有通过使具有至少三个羟基的支链多元醇如三羟甲基丙烷反应制得的低粘度和高固含量; 二醇或二醇; 和选自脂族或芳族二羧酸C 1 -C 6烷基酯，酸酐，二酸卤化物或其混合物的化合物的化合物。 非线性的基于聚酯的多元醇在保持高固体含量的同时相当有效，同时与其它涂料树脂（例如丙烯酸树脂）混合时降低粘度，使涂料树脂在固化涂料中更有效，通过改善柔韧性，耐冲击性和硬度而不会有不利影响 影响外观，耐溶剂性和/或加速风化。 本发明还涉及用这些涂料组合物涂覆基材的方法。
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