MACROMONOMERIC STABILIZER, PREPARATION METHOD THEREOF, AND METHOD FOR PREPARING POLYMERIC POLYOL
申请人:Wanhua Chemical Group Co., Ltd.
公开号:EP3904416A1
公开(公告)日:2021-11-03
Disclosed are a macromonomeric stabilizer, a preparation method thereof, a method for preparing a polymeric polyol using same, and the polymeric polyol prepared. Also disclosed are a soft polyurethane foam obtained by foaming a composition of the polymeric polyol prepared and a polyisocyanate, and a molded product comprising the soft polyurethane foam. The preparation method of the macromonomeric stabilizer comprises the following steps: reacting a polyol with a tricarboxylate not comprising a polymerizable ethylenically unsaturated double bond, or a derivative thereof, to form an adduct; and reacting the resulting adduct with an epoxide comprising a polymerizable ethylenically unsaturated double bond. The macromonomeric stabilizer of the present invention has a low viscosity, comprises a plurality of active sites, and can be directly used in subsequent reactions. The preparation method of the macromonomeric stabilizer can be carried out under normal pressure, without the need for end-blocking with ethylene oxide. The polymeric polyol prepared using the macromonomeric stabilizer of the present invention has an excellent resistance to deformation at high temperatures.
本发明公开了一种大单体稳定剂、其制备方法、使用大单体稳定剂制备聚合多元醇的方法以及所制备的聚合多元醇。还公开了一种软质聚氨酯泡沫塑料,该泡沫塑料是由所制备的聚合多元醇和多异氰酸酯的组合物发泡而成,还公开了一种包含该软质聚氨酯泡沫塑料的模塑产品。大单体稳定剂的制备方法包括以下步骤:将多元醇与不包含可聚合乙烯不饱和双键的三羧酸酯或其衍生物反应,形成加合物;将所得加合物与包含可聚合乙烯不饱和双键的环氧化物反应。本发明的大单体稳定剂粘度低,包含多个活性位点,可直接用于后续反应。大单体稳定剂的制备方法可在常压下进行,无需用环氧乙烷进行末端封端。使用本发明的大单体稳定剂制备的聚合物多元醇在高温下具有优异的抗变形能力。