Dow Global Technolgoies LLC

Rohm and Haas Company

Jinfei Wang

Xiaohong Yang

Juan Zhao

Yan Li

Shaoguang Feng

Wei Cui

Ling Li

Jianming Xu

Cheng Shen

Qingwei Zhang

Fengzhe Shi

Dong Yun

Zhen Qian

Baoqing Zheng

Yawei Xu

Jia Tang

Daoshu Lin

Jingchao Zhang

Jintao Liu

Li Zhou

An aqueous dispersion of multistage polymeric particles comprising at least two polymers, a process for preparing the aqueous dispersion of multistage polymeric particles; and an aqueous coating composition comprises such aqueous dispersion of multistage polymeric particles providing coatings with hot resistance, alcohol resistance, alkali resistance and acetic acid resistance.

Aqueous dispersion of multistage polymeric particles and process for preparing the same

A two-component polyurethane composition comprising (A) an aqueous dispersion comprising an emulsion polymer and from 2% to 20% of an alcohol alkoxylate of formula (I), by weight based on the weight of the emulsion polymer, and (B) a polyisocyanate; the two-component polyurethane composition can provide coatings with a high distinctness of image.

Two-component polyurethane composition

A two-component polyurethane composition comprising: a specific emulsion polymer, and a water-dispersible polyisocyanate; the emulsion polymer comprising, by weight based on the weight of the emulsion polymer, (a) greater than 15% to less than 30% of structural units of tert-butyl methacrylate, (b) greater than 10% of structural units of a hydroxy-functional alkyl (meth)acrylate, (c) structural units of a phosphorous-containing acid monomer and/or a salt thereof, (d) structural units of an additional acid monomer and/or a salt thereof, and (e) structural units of an additional monoethylenically unsaturated nonionic monomer; wherein the weight ratio of (d)/(c) is in the range of from 7.1:1 to 9.9:1; and a process of preparing the two-component polyurethane composition.

A two-component polyurethane composition comprising a polyisocyanate and an emulsion polymer having greater than 2.2% of hydroxy groups in the emulsion polymer and comprising structural units of a polymerizable surfactant, a first hydroxy-functional monomer, an acid monomer and/or a salt thereof, an additional monoethylenically unsaturated nonionic monomer, and optionally a second hydroxy-functional alkyl (meth)acrylate; the two-component polyurethane composition providing improved alcohol resistance without compromising both acid and alkali resistance.

The present invention provides an aqueous polymer composition and an aqueous coating composition comprising such aqueous polymer composition that shows balanced stain resistance, freeze-thaw stability, and anti-clogging properties.

Aqueous polymer composition

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Shanghai, China

Jinfei Wang