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US 5,294,668 AGranted
Polyolefin pressure-sensitive adhesive compositions containing macromonomers
AssigneeMinnesota Mining and Manufacturing Company
InventorGaddam N. Babu
Life of this patent
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Abstract
The invention provides pressure-sensitive adhesive (PSA) compositions comprising a graft copolymer of one or more of ethylene and C.sub.3 -C.sub.18 .alpha.-olefins and one or more of a new class of macromonomers. The adhesive composition comprises a blend of the graft copolymer with a tackifying resin. Sheet materials can be coated with layers of the adhesive composition to provide tapes and laminates.
Claims17
A pressure-sensitive adhesive composition comprising a mixture of:
- a) 40-99% by weight of a ZN graft copolymer comprising
- 1) 0.1 to 25% by weight of a macromonomer comprising the polymerized product of at least one of an ethenylarene and a conjugated diene monomer, said product having a terminal .omega.-alkenyl group of at least 4 carbon atoms and;
- 2) 99.9 to 75% by weight of an alpha-olefin having 2 to 18 carbon atoms of which 60 to 100% of the total .alpha.-olefins are .alpha.-olefins having 6 to 14 carbon atoms;
- and
- b) 60-1 weight % of one or more tackifying resins.
2 more elements
Dependencies are inferred from the claim text.