Wanhua Chemical Group Co., Ltd.

Guiying Niu

Hongke Zhang

Xiaogao Liu

Wenbo Wang

Huihui Wang

Ye Zhou

Yilu Xia

Xueting Liu

Disclosed is a light colored modified isocyanate mixture and a preparation method thereof. The method comprises the following steps: a) reacting isocyanate groups of a raw material isocyanate under the action of a phospholenecatalyst, and finally obtaining a modified isocyanate reaction solution containing carbodiimide and/or uretonimine derivatives; and b) adding a compounded terminator of a halosilane organic and a sulfonic anhydride to the reaction solution obtained in step a so as to terminate the reaction of carbodiimidization. The modified isocyanate prepared by the method has the characteristics of a liquid state at room temperature, being stable in storage at room temperature and high temperature, and low color number.

Light colored modified isocyanate mixture and preparation method thereof

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Shandong, China

Guiying Niu