Tackifiers and a process to obtain tackifiers
AssigneeExxon Chemical Patents Inc.
InventorsNatalie Ann Merrill, James McLeod Farley, Martha Hetzel Robertson, Charles Lewis Sims, Richard Byron Pannell, Angelo Anthony Montagna
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Abstract
Novel tackifier resins having a M.sub.n of 5,000 or less and a T.sub.g of 0.degree. C. or above are produced by combining a metallocene catalyst with an alpha-olefin and a cyclic monomer. New adhesives are produced by blending the novel tackifier with a base polymer.
Claims30
A method for producing a tackifier resin, said method comprising copolymerizing at least one alpha-olefin and at least one cyclic olefin in the presence of a metallocene catalyst system under conditions suitable for the production of a copolymer having a M.sub.n of 5000 or below and a T.sub.g of 0.degree. C. or above.
A tackifier resin consisting essentially of at least one alpha-olefin and from about 20 to about 95 mole % of at least one cyclic olefin, said alpha-olefin and cyclic olefin copolymerized in the presence of a metallocene catalyst system under conditions suitable for the production of a copolymer having a T.sub.g of 0.degree. C. or more and a M.sub.n of 5000 or less.
An adhesive comprising a base polymer and a tackifier resin said tackifier resin consisting essentially of at least one alpha-olefin and from about 20 to about 95 mole % of at least one cyclic olefin, said alpha-olefin and cyclic olefin copolymerized in the presence of a metallocene catalyst system under conditions suitable for the production of a copolymer having a T.sub.g of 0.degree. C. or more and a M.sub.n of 5000 or less.
Dependencies are inferred from the claim text.