Adducts of mid-range vinylidene content polyisobutylene polymer products and methods for making the same
View Patent ↗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 60° F. using a BF 3 /methanol catalyst complex and a contact time of no more than 4 minutes.
1. A PIB adduct comprising a reaction product of a reaction between (1) a mid-range vinylidene content PIB polymer composition comprising PIB molecules, wherein a first portion of said PIB molecules have alpha position double bonds and a second portion of said PIB molecules have beta position double bonds, wherein said first and second portions together include at least 90% of the PIB molecules of the composition, wherein said first portion includes less than 70% of the PIB molecules of the composition, and wherein no more than about 10% of the PIB molecules of the composition have tetra-substituted internal double bonds, said composition having a polydispersity of no more than 2.0, and (2) an additive material comprising maleic anhydride, a phenolic compound or a compound having a reactive site for subsequent amination.
2. A PIB adduct as set forth in claim 1 , wherein said additive material comprises maleic anhydride.
3. A PIB adduct as set forth in claim 1 , wherein said additive material comprises a phenolic compound.
4. A PIB adduct as set forth in claim 1 , wherein said additive material comprises a compound having a reactive site for subsequent amination.
5. A PIB amine compound comprising a reaction product of a reaction between an intermediate and an amine, wherein the intermediate is produced by reacting (1) a mid-range vinylidene content PIB polymer composition comprising PIB molecules, wherein a first portion of said PIB molecules have alpha position double bonds and a second portion of said PIB molecules have beta position double bonds, wherein said first and second portions together include at least 90% of the PIB molecules of the composition, wherein said first portion includes less than 70% of the PIB molecules of the composition, and wherein no more than about 10% of the PIB molecules of the composition have tetra-substituted internal double bonds, said composition having a polydispersity of no more than 2.0, and (2) a compound having a reactive site for subsequent amination.
6. A process for preparing a PIB adduct comprising:
providing a mid-range vinylidene content PIB polymer composition comprising PIB molecules, wherein a first portion of said PIB molecules have alpha position double bonds and a second portion of said PIB molecules have beta position double bonds, wherein said first and second portions together include at least 90% of the PIB molecules of the composition, wherein said first portion includes less than 70% of the PIB molecules of the composition, wherein no more than about 10% of the PIB molecules of the composition have tetra-substituted internal double bonds, and wherein said composition has a polydispersity of no more than 2.0; and
reacting said composition with an additive material comprising maleic anhydride, a phenolic compound or a compound having a reactive site for subsequent amination.
7. A process as forth in claim 6 , wherein said additive material comprises maleic anhydride.
8. A process as forth in claim 6 , wherein said additive material comprises a phenolic compound.
9. A process as forth in claim 6 , wherein said additive material comprises a compound having a reactive site for subsequent amination.
10. A process for preparing a PIB amine compound comprising:
providing a mid-range vinylidene content PIB polymer composition comprising PIB molecules, wherein a first portion of said PIB molecules have alpha position double bonds and a second portion of said PIB molecules have beta position double bonds, wherein said first and second portions together include at least 90% of the PIB molecules of the composition, wherein said first portion includes less than 70% of the PIB molecules of the composition, wherein no more than about 10% of the PIB molecules of the composition have tetra-substituted internal double bonds, and wherein said composition has a polydispersity of no more than 2.0;
reacting said composition with a compound having a reactive site for subsequent amination to thereby produce an intermediate; and
reacting said intermediate with an amine.
11. The invention of claim 4 , 5 , 9 or 10 , wherein said compound having a reactive site for subsequent amination comprises an epoxide, a maleic anhydride adduct, a halide or a carbonyl derivative.