| 发明名称 |
WATER EXPANDABLE POLYMER BEADS |
| 摘要 |
The present invention relates to a process for the emulsifier-free preparation of water expandable polymer beads, which process comprises the steps of: a) providing an emulsifier-free starting composition comprising styrene and a polyphenylene ether resin, b) prepolymerizing the starting composition to obtain a prepolymer composition, c) adding an aqueous dispersion of a modifier-free nanoclay to the prepolymer composition to obtain an inverse emulsion, d) suspending the inverse emulsion obtained by step c) in an aqueous medium to yield an aqueous suspension of suspended droplets and e) polymerizing the monomers in the droplets of the suspension obtained by step d) to obtain the water expandable polymer beads. |
| 申请公布号 |
US2014221511(A1) |
申请公布日期 |
2014.08.07 |
| 申请号 |
US201214343729 |
申请日期 |
2012.09.04 |
| 申请人 |
Al-Ghamdi Ghurmallah;Jansen Martinus Adrianus Gertrudus;Nelissen Laurentius Nicolaas Ida Hubertus |
发明人 |
Al-Ghamdi Ghurmallah;Jansen Martinus Adrianus Gertrudus;Nelissen Laurentius Nicolaas Ida Hubertus |
| 分类号 |
C08J9/20;C08L25/14 |
主分类号 |
C08J9/20 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for the emulsifier-free preparation of water expandable polymer beads, which process comprises:
a) providing an emulsifier-free starting composition comprising styrene and a polyphenylene ether resin, b) prepolymerizing the starting composition to obtain a prepolymer composition, c) adding an aqueous dispersion of a modifier-free nanoclay to the prepolymer composition to obtain an inverse emulsion, d) suspending the inverse emulsion obtained by step c) in an aqueous medium to yield an aqueous suspension of suspended droplets, and e) polymerizing the monomers in the droplets of the suspension obtained by step d) to obtain the water expandable polymer beads. |
| 地址 |
Riyadh SA |
