发明名称 |
PROCESS FOR STABILIZING CRYSTALLINE ORGANIC PHOSPHITE OR PHOSPHONITE FROM EFFECT OF HYDROLYSIS, AND ORGANIC PHOSPHITE OR PHOSPHONITE STABILIZED FROM EFFECT OF HYDROLYSIS |
摘要 |
FIELD: chemical industry. SUBSTANCE: claimed process comprises introducing mixture comprising phosphite of phosphonite, solvent or mixture of solvents and 0.1-100 wt % amine with respect to phosphite or phosphonite heated to 50-100 C in the form homogeneous melt into liquid crystallization medium. As melt is introduced, medium temperature is maintained by 10-70 C lower then melt temperature. The claimed process improves stability of organic phosphites and phosphonites from effect of hydrolysis. The present invention also describes preparation of organic phosphite or phosphonite stabilized from effect of hydrolysis. Said organic phosphite or phosphonite has improved properties and are useful as thermostabilizers for synthetic polymers. EFFECT: more efficient stabilization process. 14 cl, 36 ex, 8 tbl
|
申请公布号 |
RU2126011(C1) |
申请公布日期 |
1999.02.10 |
申请号 |
RU19930054303 |
申请日期 |
1993.10.05 |
申请人 |
TSIBA SPESHIALTI KEMIKEHLS KHOLDING INK. |
发明人 |
UDO KVOTSHALLA;KHEL'MUT LINKHART |
分类号 |
C07F9/145;C07D;C07F9/48;C07F9/6574;C08K5/51;C09K;(IPC1-7):C07F9/145;C07F9/657 |
主分类号 |
C07F9/145 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|