| 发明名称 |
Redispersible polymer powder mixtures for use in dry-mix formulations |
| 摘要 |
A mixture of first and second redispersible polymer powders where the first redispersible polymer powder has a copolymer having a glass transition temperature of 60 degrees Celsius or higher and an acid level in a range of 0.1 to 8 weight-percent percent as determined by potentiometric titration according to ASTM D664 and the second redispersible polymer powder is selected from vinyl acetate ethylene copolymer redispersible polymer powders and polymer powders of a blend of vinyl acetate ethylene copolymer and vinyl ester of versatic acid copolymer is useful as a component in a dry-mix formulation that further contains Portland cement, alumina rich cement and calcium sulfate. |
| 申请公布号 |
US9212280(B2) |
申请公布日期 |
2015.12.15 |
| 申请号 |
US201314431454 |
申请日期 |
2013.09.13 |
| 申请人 |
Rohm and Haas Company;Dow Global Technologies LLC |
发明人 |
Kim-Habermehl Linda;Westmeyer Mark D.;Chen Liang;Hong Liang;Ladika Mladen |
| 分类号 |
C08L31/04;C08L25/08;C04B28/04;C04B28/06;C04B40/00;C08L23/08;C04B111/00;C04B111/70 |
主分类号 |
C08L31/04 |
| 代理机构 |
|
代理人 |
Merriam Andrew E. C. |
| 主权项 |
1. A mixture comprising first and second redispersible polymer powders, wherein:
a. the first redispersible polymer powder comprises polymer particles primarily comprising a copolymer having a glass transition temperature of 60 degrees Celsius or higher and an acid level in a range of 0.1 to 8 weight-percent percent as determined by potentiometric titration according to ASTM D664; and b. the second redispersible polymer powder is selected from vinyl acetate ethylene copolymer redispersible polymer powders and polymer powders of a blend of vinyl acetate ethylene copolymer and vinyl ester of versatic acid copolymer. |
| 地址 |
Philadelphia PA US |
