EP 0971935 A1 20000119 - PROCESS FOR MAKING AND USING BISARYL DIPHOSPHATES
Title (en)
PROCESS FOR MAKING AND USING BISARYL DIPHOSPHATES
Title (de)
VERFAHREN ZUR HERSTELLUNG UND VERWENDUNG VON BISARYLDIPHOSPHATEN
Title (fr)
PROCEDE DE FABRICATION ET D'UTILISATION DE BISARYL-DIPHOSPHATES
Publication
Application
Priority
- US 9802968 W 19980210
- US 3873497 P 19970214
Abstract (en)
[origin: WO9835970A1] Flame retardancy is provided to polymer resins by adding to the resin a bisaryl diphosphate that has not been purified to remove catalyst or catalyst residue from the product. The bisaryl diphosphate may be prepared by a two-step process that starts with the semi-continuous addition of dry bisphenol A to a heated mixture of phosphorous oxychloride and MgCl, and concludes with the addition of dry phenol to the step one intermediate.
IPC 1-7
IPC 8 full level
C07F 9/12 (2006.01); C08K 5/521 (2006.01); C08K 5/523 (2006.01); C08L 101/00 (2006.01); C09K 21/14 (2006.01)
CPC (source: EP KR)
C07F 9/12 (2013.01 - EP); C08G 83/00 (2013.01 - KR); C08K 5/521 (2013.01 - KR); C08K 5/523 (2013.01 - EP)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
WO 9835970 A1 19980820; BR 9808644 A 20000523; CA 2281106 A1 19980820; CN 1252073 A 20000503; EP 0971935 A1 20000119; EP 0971935 A4 20000419; IL 131379 A0 20010128; JP 2001512510 A 20010821; KR 20000071089 A 20001125
DOCDB simple family (application)
US 9802968 W 19980210; BR 9808644 A 19980210; CA 2281106 A 19980210; CN 98804140 A 19980210; EP 98906465 A 19980210; IL 13137998 A 19980210; JP 53598698 A 19980210; KR 19997007376 A 19990813