| 摘要 |
Ionomers in the salt form, such as the ammonium salts of sulfonated polystyrene, are precipitated from solution in a non-polar organic liquid by contact with a polar liquid in which the ionomer has only limited solubility (e.g., methanol) and a particulate solid such as a polyphenylene ether, followed by contact with a salt such as ammonium chloride, preferably in solution in the polar liquid. The resulting ionomer-coated polyphenylene ether particles are easily filtered and handled. |
