SIMPLE AND CHEMOSELECTIVE SYNTHESIS OF KETONES FROM CARBOXYLIC ACIDS AND GRIGNARD REAGENTS USING DICHLOROTRIPHENYLPHOSPHORANE
作者:Tamotsu Fujisawa、Sachio Iida、Hiroshi Uehara、Toshio Sato
DOI:10.1246/cl.1983.1267
日期:1983.8.5
Dichlorotriphenylphosphorane was found to be a good condensation reagent for synthesis of ketones from carboxylic acids and Grignardreagents under mild conditions. Synthetic utility of the present method is demonstrated by the chemoselective reaction of carboxylic acids possessing such a functional group as halogen, cyano, or carbonyl.
Polymeric pentaerythrityl phosphonates useful as flame retardants for polyolefins and process for preparing same
申请人:AMERICAN CYANAMID COMPANY
公开号:EP0008486A1
公开(公告)日:1980-03-05
The present invention provides novel polymeric pentaerythrityl phosphonates which are useful as flame retardants for polyolefins, especially polypropylene. The polymeric pentaerythrityl phosphonates of the invention may be represented by the formula:
wherein Y is selected from (a) (CH2)x and
and wherein n is at least 2; x is an integer from 1 to8; and y is 0 or an integer from 1 to 4. These flame retardants may be used alone or preferably in combination with ammonium polyphosphate and/or various oxides and/or carbonates.
本发明提供了可用作聚烯烃,特别是聚丙烯阻燃剂的新型聚合季戊四醇膦酸盐。本发明的聚合季戊四醇膦酸盐可由式表示:
其中 Y 选自 (a) (CH2)x 和
这些阻燃剂可单独使用,也可与聚磷酸铵和/或各种氧化物和/或碳酸盐结合使用。
Compositions ignifugeantes pour résines synthétiques contenant une zéolithe
申请人:ELF ATOCHEM S.A.
公开号:EP0629677A1
公开(公告)日:1994-12-21
L'invention concerne une composition ignifugeante sans halogènes pour résines synthétiques contenant au moins un système intumescent et au moins une zéolithe.
Salt of a melamine condensation product and a phosphorous-containing acid
申请人:——
公开号:US20030096946A1
公开(公告)日:2003-05-22
Salt of a melamine condensation product and a phosphorus-containing acid, the phosphorus-containing acid being a monobasic phosphorus-containing acid. Further a method for the preparation of a phosphorus-containing salt of a melamine condensation product in which a triazine compound and a monobasic phosphorus-containing acid are heated together to a temperature between 250 and 400° C.