发明名称 |
Method for producing powdery and granular polymers |
摘要 |
A method for producing a powdery and granular polymer by two coagulation steps comprising coagulating a latex of the polymer, the latex containing a sulfuric acid ester series and/or sulfonic acid series anionic surface active agents, with an acid to an amount of the polymer of 40 to 80 wt. % at a first coagulation step, and then bringing coagulation to completion with an acid or salt at a second coagulation step. According to the present invention, a powdery and granular polymer having a sharp particle size distribution and a high bulk specific gravity can be obtained.
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申请公布号 |
US5514772(A) |
申请公布日期 |
1996.05.07 |
申请号 |
US19940197282 |
申请日期 |
1994.02.16 |
申请人 |
MITSUBISHI RAYON CO., LTD. |
发明人 |
SUZUKI, FUMIO;SATO, HARUKI;SUGIHARA, MASAKI;HADANO, WATARU |
分类号 |
C08F6/00;C08J3/16;(IPC1-7):C08L33/12;C08F6/22 |
主分类号 |
C08F6/00 |
代理机构 |
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代理人 |
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地址 |
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