Wanhua Chemical Group Co., Ltd.

Wanhua Chemical (Ningbo) Co., Ltd.

Wanhua Chemical (Guangdong) Co., Ltd.

Yuanyong Wang

Xueshun Ji

Zefeng Song

Huiliang Li

Yancheng Zhang

Yongjian Sun

Aqueous dispersion comprising polyurethane or polyurethane-urea, a preparation method therefor and a use thereof. The polyurethane or polyurethane-urea is prepared by reacting raw materials comprising the following components: a compound having a tertiary amine group and at least one NCO reactive functional group, a polyester polyol having a number average molecular weight of 400 to 5000 and a functionality of 2 to 3, an organic compound having at least two isocyanate groups, a hydrophilic compound having one or more of an ionic group, a potential ionic group and a non-ionic group and having 2 to 3 NCO reactive functional groups, and a mono-functional non-ionic hydrophilic compound having at least one NCO reactive functional group. The aqueous dispersion can be stably stored for a prolonged period of time, and an adhesive prepared from the aqueous dispersion has an improved hydrolysis resistance while maintaining good bonding strength and heat resistance.

Aqueous dispersion comprising polyurethane or polyurethane-urea, preparation method therefor and use thereof

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Shandong, China

Yuanyong Wang