Patent · US Active

Halogenated polyisoolefins with reduced halogenated oligomers

US10618985B2 · kind B2 · utility

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10References

11Claims

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Inventors

Dana Adkinson · London, CA
Sarah Elliott · Bright, CA

Key dates

Filing date	Mar 3, 2016
Grant date	Apr 14, 2020
Priority date	—
Expiry date	Apr 9, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2203/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A halogenated polyisoolefin copolymer is composed of at least one isoolefin monomer, at least one multiolefin monomer, a halogen content of 0.05-2.5 mol %, and a halogenated oligomer content of less than 65% of total oligomer content in the halogenated polyisoolefin copolymer. The copolymer has low halogen content and significantly reduced levels of halogenated oligomers. The copolymer is especially useful in the pharmaceutical and food industries, for example as pharmaceutical and food product seals and closures.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.