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US 6,566,570 B1Granted
Process for preparing cyclic monomers
AssigneeOptatech Corporation
InventorsChrister Bergström, Arto Mölsä, Juhana Ruotoistenmäki
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Abstract
A process for producing an unsaturated cyclic compound, comprising the steps of hydrochlorinating a terpene to produce a hydrochlorinated terpene, and subjecting the hydrochlorinate terpene to elimination of hydrogen chloride to form an unsaturated cyclic compound. The terpene is preferably α-pinene, β-pinene, camphene or suitable turpentine fraction. The cyclic compounds can be used as monomers and by means of the invention it is thus possible to produce plastics from renewable raw material sources.
Claims5
A process for producing 1,7,7-trimethy-norbornene, comprising:
- a) hydrochlorinating a terpene to produce a hydrochlorinated terpene, and
- b) subjecting the hydrochlorinated terpene to an E2-elimination of hydrogen chloride to form 1,7,7-trimethyl-norbornene.
Dependencies are inferred from the claim text.