EP 0000578 B1 19830126 - PROCESS FOR PREPARING HIGH MOLECULAR WEIGHT POLYETHER RESINS FROM A DIGLYCIDYL ETHER OF A BISPHENOL, A BISPHENOL AND A HALOGENATED BISPHENOL
Title (en)
PROCESS FOR PREPARING HIGH MOLECULAR WEIGHT POLYETHER RESINS FROM A DIGLYCIDYL ETHER OF A BISPHENOL, A BISPHENOL AND A HALOGENATED BISPHENOL
Publication
Application
Priority
US 81932177 A 19770727
Abstract (en)
[origin: US4104257A] {PG,1 A process for preparing thermoplastic polyether resins from bisphenols, particularly having significant quantities of the o, p- or o, o-isomers such as bisphenol A and epoxy resins such as the diglycidyl ether of bisphenol A is improved by the addition of small quantities of a halogenated bisphenol such as tetrabromobisphenol A preferably near the end of the reaction. The process provides a product higher in molecular weight than that obtained without the use of the halogenated bisphenol.
IPC 1-7
IPC 8 full level
C08G 59/00 (2006.01); C08G 59/14 (2006.01); C08G 59/62 (2006.01); C08G 59/68 (2006.01); C08G 65/38 (2006.01); C08L 63/00 (2006.01)
CPC (source: EP US)
C08G 59/621 (2013.01 - EP US); C08G 59/688 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
US 4104257 A 19780801; AU 3831878 A 19800131; AU 527804 B2 19830324; BR 7804816 A 19790410; CA 1099848 A 19810421; DE 2862163 D1 19830303; EP 0000578 A1 19790207; EP 0000578 B1 19830126; ES 472118 A1 19790316; IT 1105923 B 19851111; IT 7850456 A0 19780725; JP S5452200 A 19790424; JP S6142725 B2 19860924
DOCDB simple family (application)
US 81932177 A 19770727; AU 3831878 A 19780725; BR 7804816 A 19780726; CA 308160 A 19780726; DE 2862163 T 19780725; EP 78100495 A 19780725; ES 472118 A 19780727; IT 5045678 A 19780725; JP 9205978 A 19780727