发明名称 |
Mid-Range Vinylidene Content, High Viscosity Polyisobutylene Polymers |
摘要 |
A mid-range vinylidene content, high viscosity PIB polymer composition including PIB molecules, wherein a first portion of the PIB molecules have alpha position double bonds and a second portion of the PIB molecules have beta position double bonds, and the first and second portions together include at least 80 mole % of the PIB molecules of the composition. The first portion includes less than 75 mole % of the PIB molecules of the composition. Additionally, no more than 10 mole % of the PIB molecules of the composition have tetra-substituted double bonds, while the composition is further characterized by having a polydispersity of no more than 2.7 and in that the composition has a kinematic viscosity in the range of 3000 cSt to 5000 cSt, a number average molecular weight, Mn, in the range of 2800 Daltons to 4000 Daltons and a ratio of Mn:PDI of greater than 1100. |
申请公布号 |
US2014235810(A1) |
申请公布日期 |
2014.08.21 |
申请号 |
US201214346860 |
申请日期 |
2012.10.10 |
申请人 |
TPC Group LLC |
发明人 |
Shaikh Sohel K. |
分类号 |
C08F110/10 |
主分类号 |
C08F110/10 |
代理机构 |
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代理人 |
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主权项 |
1. A mid-range vinylidene content, high viscosity 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 80 mole % of the PIB molecules of the composition, wherein said first portion includes less than 75 mole % of the PIB molecules of the composition, and wherein no more than 10 mole % of the PIB molecules of the composition have tetra-substituted double bonds, said composition having a polydispersity of no more than 2.7; and being further characterized in that the composition has a kinematic viscosity in the range of 3000 cSt to 5000 cSt, a number average molecular weight, Mn, in the range of 2800 Daltons to 4000 Daltons and a ratio of Mn:PDI of greater than 1100. |
地址 |
Houston TX US |