Loading patent…
AssigneeWanhua Chemical Group Co., Ltd.
InventorsZhen WANG, Yunquan JIN, Xu ZHANG, Yiming LIU, Xueshun JI, Jiakuan SUN
Estimating the term…
Disclosed are a polyurethane-polyurea aqueous dispersion, and a preparation method therefor and a use thereof. The aqueous dispersion comprises a polyurethane-polyurea dispersed therein, containing a terminal carboxyl group, a sulfonate group, and a carboxylate group, and having a specific theoretical molecular weight, wherein the content of the carboxylate group is 1.49-11.9 mmol/100 g, the content of the sulfonate group is 0.26-7.9 mmol/100 g, the content of the terminal carboxyl group is 0.5-3.7 mmol/100 g, the molecular weight is 60,000-390,000, and the specific theoretical molecular weight is a theoretical design molecular weight and is obtained by means of an end-group calculation method. The polyurethane-polyurea aqueous dispersion avoids the problems of glove cracking and pinholes in glove production and improves production stability.
A polyurethane-polyurea aqueous dispersion, comprising a polyurethane-polyurea dispersed therein, wherein the polyurethane-polyurea contains terminal carboxyl groups, sulfonate groups, and carboxylate groups, and has a specific theoretical molecular weight, wherein the carboxylate groups have a content of 1.49-11.9 mmol/100 g, the sulfonate groups have a content of 0.26-7.9 mmol/100 g, the terminal carboxyl groups have a content of 0.5-3.7 mmol/100 g, and the molecular weight is from 60000 to 390000, and wherein the specific theoretical molecular weight is a theoretically designed molecular weight obtained by an end-group calculation method.
Dependencies are inferred from the claim text.