| 摘要 |
A composition of matter comprising vinyl ended copolymer chains having a number average molecular weight (Mn) of about 1500 to 75,000, the number average molecular weight being determined by gel permeation chromatography (GPC) at 145� C., a ratio of vinyl groups to total olefin groups according to the formulawhere a and b have the following sets of valuer: when a=-0.24, b=0.8; when a=-0.20, b=0.8; when a=-0.18, b=0.83; when a=-0.15, b=0.83; and when a=-0.10, b=0.85; and where the total number of vinyl groups per 1000 carbon atoms is in the range from greater than 0.13 to less than 9.85, the vinyl group measurement being taken by GPC (145� C.) and 1H-NMR (125� C.). |
