EP 1276783 A1 20030122 - METHOD FOR PRODUCING POLYBUTADIENE LATEX WITH AN OPTIMIZED THERMAL CURRENT PROFILE
Title (en)
METHOD FOR PRODUCING POLYBUTADIENE LATEX WITH AN OPTIMIZED THERMAL CURRENT PROFILE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYBUTADIEN-LATEX MIT OPTIMIERTEM WÄRMESTROMPROFIL
Title (fr)
PROCEDE DE PRODUCTION DE LATEX DE POLYBUTADIENE PRESENTANT UN PROFIL DE COURANT THERMIQUE OPTIMISE
Publication
Application
Priority
- DE 10020355 A 20000426
- EP 0104616 W 20010424
Abstract (en)
[origin: WO0181438A1] The invention relates to a method for producing polybutadeine latex, according to which butadeine is polymerized in a radical emulsion polymerization in the presence of initiators and optionally dispersants and additional conventional auxiliary agents. Said polymerization is carried out in the presence of reactive comonomers, in such a way that a thermal current of 43 watts/kg solid content is not exceeded. The presence of reactive comonomers increases the reaction speed at the beginning of said reaction, thus achieving a flatter thermal current profile overall. The preferred reactive comonomer is styrol. The method is preferably carried out in the following semi-batch manner: (a) in a first step, a partial quantity of butadeine and at least one partial quantity of a reactive comonomer is prepared in the form of an aqueous solution with a thermally disintegrating initiator and optionally dispersants and additional conventional auxiliary agents and the polymerization is initiated, (b) in a second step, the residual quantity of butadeine and optionally the residual quantity of the reactive comonomer are added as an influent, undiluted or in aqueous solution, optionally with dispersants and optionally with additional conventional auxiliary agents.
IPC 1-7
IPC 8 full level
C08F 2/22 (2006.01); C08F 2/32 (2006.01); C08F 236/06 (2006.01); C08F 279/02 (2006.01)
CPC (source: EP KR US)
C08F 236/06 (2013.01 - EP KR US); C08F 279/02 (2013.01 - EP US); Y10S 525/942 (2013.01 - EP US)
Citation (search report)
See references of WO 0181438A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0181438 A1 20011101; EP 1276783 A1 20030122; KR 20020091230 A 20021205; MX PA02010049 A 20030310; US 2003162889 A1 20030828; US 6852797 B2 20050208
DOCDB simple family (application)
EP 0104616 W 20010424; EP 01940359 A 20010424; KR 20027014165 A 20021022; MX PA02010049 A 20010424; US 25771702 A 20021016