EP 1991591 A1 20081119 - METHOD FOR THE MODIFICATION OF POLYVINYL BUTYRALS
Title (en)
METHOD FOR THE MODIFICATION OF POLYVINYL BUTYRALS
Title (de)
VERFAHREN ZUR MODIFIZIERUNG VON POLYVINYLBUTYRALEN
Title (fr)
PROCEDE DE MODIFICATION DE POLYVINYLBUTYRALS
Publication
Application
Priority
- EP 2006070106 W 20061221
- EP 05112546 A 20051221
- EP 06841564 A 20061221
Abstract (en)
[origin: EP1801132A1] A method for the production of modified acetalised polyvinyl alcohols involves reacting acetalised polyvinyl alcohols in the melt with optionally substituted ethylene oxides. A method for the production of modified acetalised polyvinyl alcohols (MPVA) involves reacting acetalised polyvinyl alcohols (PVA) with epoxides of formula (I) in the melt. R1 : H, a 1-20C aliphatic, cycloaliphatic, aromatic or aliphatic-aromatic residue, or -CH2OCOCC(R2)=CH2; and R2 : H or a 1-10C aliphatic group. [Image].
IPC 8 full level
C08F 8/00 (2006.01)
CPC (source: EP KR US)
C08F 8/00 (2013.01 - EP KR US); C08F 8/14 (2013.01 - KR); C08F 16/06 (2013.01 - KR)
Citation (search report)
See references of WO 2007071770A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1801132 A1 20070627; CN 101331158 A 20081224; CN 101331158 B 20110824; EP 1991591 A1 20081119; JP 2009520856 A 20090528; KR 20080079683 A 20080901; US 2009176937 A1 20090709; US 8178618 B2 20120515; WO 2007071770 A1 20070628
DOCDB simple family (application)
EP 05112546 A 20051221; CN 200680047692 A 20061221; EP 06841564 A 20061221; EP 2006070106 W 20061221; JP 2008546472 A 20061221; KR 20087017433 A 20080717; US 15810106 A 20061221