Arlanxeo Singapore Pte. Ltd.

Arlanxeo Canada Inc.

Brianna Binder

Sharon X Guo

Gregory J E Davidson

Sarah Elliott

Gregory J Davidson

A polyisoolefin-based polymer composition having a multimodal molecular weight distribution is described, which can be prepared by the late addition of a chain transfer agent to the polymerization process. The polymer composition has a low molecular weight fraction having a peak molecular weight (M) of less than about 100,000 g/mol and a high molecular weight fraction having a peak molecular weight (M) of greater than about 250,000 g/mol, the low molecular weight fraction present in the composition in an amount less than the high molecular weight fraction. Cured articles produced from the polyisoolefin-based polymer composition exhibit improved processability while maintaining physical properties.

Multi-modal polyisoolefin compositions and processes therefor

A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no solvent, require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.

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Essex, Canada

Brianna Binder