发明名称 |
METHOD OF CONVERTING FLUORIDE-CONTAINING POLYMER INTO LOWER MOLECULAR WEIGHT POLYMER |
摘要 |
<p>A fluoropolymer, e.g. polytetrafluoroethylene, is easily and efficiently converted into a lower molecular weight polymer in the form of a fine powder by subjecting the fluoropolymer to contact reaction with a gas comprising molecular fluorine or a suitable fluoride such as nitrogen trifluoride or xenon difluoride at a temperature between the melting temperature of the fluoropolymer and 600 DEG C., extracting a hot reaction gas produced by the contact reaction from the reactor and cooling the extracted reaction gas to a temperature not high than 100 DEG C. to thereby precipitate the molecular weight reduced fluoropolymer contained in the hot reaction gas as vapor.</p> |
申请公布号 |
GB2198136(B) |
申请公布日期 |
1990.04.25 |
申请号 |
GB19870027400 |
申请日期 |
1987.11.23 |
申请人 |
* CENTRAL GLASS COMPANY LIMITED |
发明人 |
MINORU * ARAMAKI;HISAZI * NAKANO;MASAHIRO * KUBO |
分类号 |
C07C17/367;C07C17/00;C07C19/08;C07C67/00;C08F8/50 |
主分类号 |
C07C17/367 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|