Chinese Standard: GB/T 32471-2016

Plastics—Determination of the isomer ratio in toluene diisocyanates for use in the production of polyurethanes

NEQ  ISO 15064:2010

全国塑料标准化技术委员会聚氨酯塑料分技术委员会(SAC/TC 15/SC 8)

本标准规定了红外光谱法和气相色谱法测定甲苯二异氰酸酯中异构体比的方法。

本标准适用于甲苯2，4二异氰酸酯(2，4TDI)、甲苯2，6二异氰酸酯(2，6TDI)混合物中所含两种异构体比例的测定。红外光谱法中试验方法A适用于测定含5%～95% 2，6TDI(95%～5% 2，4TDI)的样品；试验方法B适用于测定含0%～5% 2，6TDI(100%～95% 2，4TDI)的样品。

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