| 摘要 |
A process for the free radical polymerization of vinyl monomers, including vinyl aromatic monomers, wherein the temperature of the polymerization is progressively increased by at least 30 DEG C during the period of the polymerization a temperature range of from 50 DEG C to 160 DEG C and wherein the final temperature is at least 110 DEG C, the polymerization mass including an initiator sensitive to produce free radicals near or at the low temperature end of the range and an initiator sensitive to produce free radicals near or at the high temperature end of the range. A single entity initiator may contain peroxide functions that are actuated to produce free radicals at each of the temperature extremes of the process.
|
