| 发明名称 |
Process for the thermal after-treatment of paste-forming polymers of vinyl chloride |
| 摘要 |
In a process for the thermal after-treatment of paste-forming homo- or copolymers of vinyl chloride, obtained by aqueous emulsion polymerization, followed by spray-drying to produce a spray-dried powder, an improvement is provided wherein 20 to 60 percent by weight of the spray-dried powder is warmed for 1 second to 30 minutes to a treating temperature of 75 DEG -110 DEG C., and then is recombined with the non heat-treated, 80-40 percent by weight portion of the powder.
|
| 申请公布号 |
US4389522(A) |
申请公布日期 |
1983.06.21 |
| 申请号 |
US19810316018 |
申请日期 |
1981.09.16 |
| 申请人 |
CHEMISCHE WERKE HULS, A.G. |
发明人 |
BOEKE, BURKHARD;KALKA, JOSEF;SMOLINSKI, MANFRED;BAUKHOLT, HEINZ |
| 分类号 |
C08F14/00;C08F6/00;C08F6/06;C08J3/00;C08J3/12;C08L1/00;C08L27/00;C08L27/06;C08L33/00;C08L33/02;(IPC1-7):C08F6/14 |
主分类号 |
C08F14/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
