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US 5,352,744 AGranted
Method for hydrogenating polymers and products therefrom
AssigneeUniversity of Minnesota
InventorsFrank S. Bates, Mark D. Gehlsen, Vincent L. Hughes, Patrick Brant
Life of this patent
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Abstract
This invention relates to a method for hydrogenation of poly(alkenyl aromatic) polymers or poly(alkenyl aromatic)/polydiene block copolymers that provides hydrogenated polymers with 99.5% or greater unsaturation and an MWD of less than about 3. Hydrogenated polymers and adhesives comprising the hydrogenated polymers and tackifier are also provided.
Claims14
A method for hydrogenating poly(alkenyl aromatic) polymers and poly(alkenyl aromatic)/polydiene block copolymers to at least 99.5% saturation, said method comprising:
- contacting under reaction conditions a poly(alkenyl aromatic) polymer or a poly(alkenyl aromatic)/polydiene block copolymer, said polymers having a Mw of 100,000 or more, with a metal catalyst on an alkali metal salt or alkaline earth metal salt.
Dependencies are inferred from the claim text.