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Application filed by Tpc Group LlcfiledCriticalTpc Group Llc
Priority to MYPI2010002355ApriorityCriticalpatent/MY180259A/en
Publication of MY180259ApublicationCriticalpatent/MY180259A/en
A reaction product comprising an adduct of a mid-range vinylidene content PIB polymer composition and maleic anhydride, a phenolic compound or a compound having a reactive site for subsequent amination. The PIB composition comprises a relatively low molecular weight, mid-range vinylidene content PIB polymer product wherein at least about 90% of the PIB molecules present in the product comprise alpha or beta position isomers. The vinylidene (alpha) isomer content of the product may range from 20% to 70% thereof and the content of tetra-substituted internal double bonds is very low, preferably less than about 5% and ideally less than about 1-2%. The mid-range vinylidene content PIB polymer products may be prepared employing a liquid phase polymerization process conducted in a loop reactor at a temperature of at least 16?C ( 60?F) using a BF 3/methanol catalyst complex and a contact time of no more than 4 minutes.
MYPI2010002355A2003-08-062003-08-06Adducts of mid-range vinylidene content polyisobutylene polymer products and methods for making the same
MY180259A
(en)
Polymerization of enantiomerically pure 2, 3-dicarboalkoxynorbornadienes and 5, 6-disubstituted norbornenes by well-characterized molybdenum ring-opening metathesis polymerization initiators. Direct determination of tacticity in cis, highly tactic and trans, highly tactic polymers