A pigment paste for tinting a coating composition, the pigment paste comprising at least one branched alkyd having a viscosity below 5 Pa.s, preferably below 3.5 Pa.s, at 23° C. and at a shear rate of 100 s
−1
, and pigment. The pigment paste can also include an aromate-free solvent. The number average molecular weight Mn of the alkyd is preferably between 2,000 and 2,400 g/mole. The degree of branching of the alkyd is preferably at least 0.35 and preferably below 0.42. The oil length is preferably between 76 and 84. The VOC is preferably below 250 g/l.
一种用于涂料组合物着色的
颜料浆,该
颜料浆包含至少一种支链醇酸,其粘度在 23°C、剪切速率为 100 秒时低于 5 Pa.s,最好低于 3.5 Pa.s。
-1
和
颜料。
颜料浆还可以包括不含
芳烃的溶剂。醇酸
树脂的平均分子量 Mn 最好在 2,000 至 2,400 克/摩尔之间。醇酸
树脂的支化度最好至少为 0.35,最好低于 0.42。油长最好在 76 至 84 之间。挥发性有机化合物含量最好低于 250 克/升。