| 发明名称 |
METHOD AND APPARATUS FOR THE PREPARATION OF CALCIUM CARBONATE COATED CALCIUM HYDROXIDE PARTICLES |
| 摘要 |
The present invention relates to a method of preparing calcium carbonate coated calcium hydroxide particles by combining calcium hydroxide and dry ice in an acquiescent manner. The invention further relates to an apparatus for carrying out the method and to the use of the calcium carbonate coated calcium hydroxide particles of the method as filler for use with thermoplastics polymers. |
| 申请公布号 |
US2014326167(A1) |
申请公布日期 |
2014.11.06 |
| 申请号 |
US201214351598 |
申请日期 |
2012.10.12 |
| 申请人 |
2262554 Ontario Inc. |
发明人 |
Martin Marcus E.;Pardiak Edward K. |
| 分类号 |
C09C1/02;B05C3/00;C08K9/10;B05D1/30 |
主分类号 |
C09C1/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of preparing calcium carbonate (CaCO3) coated calcium hydroxide (Ca(OH)2) particles comprising:
introducing calcium hydroxide particles into a reaction vessel; reacting the calcium hydroxide particles with carbon dioxide in the form of dry ice by introducing the dry ice into the reaction vessel and allowing the carbon dioxide to co-mingle with the calcium hydroxide particles and react to form a calcium carbonate coating on the calcium hydroxide particle;wherein the proportion of the calcium hydroxide particles to dry ice is controlled to provide calcium carbonate coated calcium hydroxide particles comprising about 70-80% w/w calcium hydroxide and about 5-30% w/w calcium carbonate surface coating. |
| 地址 |
Parry Sound CA |
