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US 6,800,680 B2Granted
Hot-melt adhesive composition comprising acidic polymer and basic polymer blends
Assignee3M Innovative Properties Company
InventorsPeter A. Stark, Audrey A. Sherman, Albert I. Everaerts
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Abstract
A hot-melt adhesive composition comprises a blend of at least one acidic polymer and at least one basic polymer. At least one of the polymers is a hot-melt adhesive. Thermally reversible crosslinks are formed between each of the two polymers. These crosslinks impart cohesive strength to the applied adhesive, without sacrificing ease of processing.
Claims17
A hot-melt pressure sensitive adhesive composition, comprising a blend of:
- an acidic copolymer derived from a first group of monomers comprising at least one acidic monomer;
- and
- a basic copolymer derived from a second group of monomers comprising at least one basic monomer,
- wherein at least one of the first and second group of monomers comprises greater than about 25% by weight of acidic or basic monomers, respectively, and
- wherein at least one of the first and second group of monomers comprises at least one basic monomer and at least one acidic monomer.
2 more elements
A hot-melt adhesive composition, comprising a blend of:
- an acidic copolymer derived from a first group of monomers comprising at least one acidic monomer;
- and
- a basic copolymer derived from a second group of monomers comprising at least one basic monomer and at least one (meth)acrylate monomer,
- wherein at least one of the first and second group of monomers comprises greater than about 25% by weight of acidic or basic monomers, respectively, and
- wherein at least one of the first and second group of monomers comprises at least one basic monomer and at least one acidic monomer.
2 more elements
A hot-melt adhesive composition, comprising a blend of:
- an acidic copolymer derived from a first group of monomers comprising at least one acidic monomer;
- and
- a basic copolymer derived from a second group of monomers comprising at least one basic monomer having a formula:
- wherein
- a is 0 or 1;
- R is selected from the group consisting of H— and CH3—;
- X is selected from the group consisting of —O— and —NH—;
- Y is a divalent linking group;
- and
- Am is a tertiary amine fragment,
- wherein at least one of the first and second group of monomers comprises greater than about 25% by weight of acidic or basic monomers, respectively, and
- wherein at least one of the first and second group of monomers comprises at least one basic monomer and at least one acidic monomer.
9 more elements
Dependencies are inferred from the claim text.