| PATENT ASSIGNEE'S COUNTRY | Taiwan |
| UPDATE | 03.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Different block copolymer mixt mfg process - Adding styrene, hydrocarbon solvent & ether polar compd into reactor having inert atm, wherein polar ether compd is THF, then adding first mono-Li initiator to initiate reaction - As styrene conversion > 95% (a) a mixt of further styrene & butadiene is added to same reactor & (b) second mono-Li initiator is added within 4 hours after the beginning of the reaction to obtain mixt having different polymeric structures Wherein MW of mixt is 30,000-500,000 & amount of styrene is 15-90% The addition of second mono-Li initiator during second step lasts 1 min - 2 hours & wt ratio of first to second mono-Li initiator is 1 - 50, resp. |
| PATENT PHOTOCOPY | Available on request |
|
Want more information ? Interested in the hidden information ? Click here and do your request. |