The problem of isobutylene polymerization and dimerization
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The book states that in an acidic environment, high temperatures favor dimerization while low temperatures facilitate polymerization of isobutylene. How should this sentence be understood? The specific boundaries between high and low temperatures are unclear. Are there also other factors that affect polymerization and dimerization? Please help
The core of your question lies not in polymerization and self-polymerization, but rather in the following: 1. It is essential to control the alkyl-to-ene ratio during the alkylation reaction; in production, this ratio is generally between 7 and 14. 2. If there is an excess of isobutylene in the raw materials, it will affect the quality of the oil, increase its boiling point, and result in waste of olefins; therefore, in typical raw material mixtures, the amount of isobutylene is kept below 2%.