Hot-melt adhesive composition
Assignee3M Innovative Properties Company
InventorsPeter A. Stark, Audrey A. Sherman, Albert I. Everaerts
Life of this patent
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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.
Claims48
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,
- wherein at least one of the first and second group of monomers comprises greater than about 15% by weight of acidic or basic monomers, respectively.
A hot-melt adhesive composition, comprising a blend of:
- an acidic homopolymer;
- and
- a basic copolymer derived from a group of monomers comprising at least one basic monomer.
A hot-melt adhesive composition, comprising a blend of:
- an acidic copolymer derived from at least one monomer selected from the group consisting of an ethylenically unsaturated sulfonic acid, an ethylenically unsaturated phosphonic acid, and mixtures thereof;
- and
- a basic homopolymer.
A method for improving cohesive strength of a hot-melt adhesive comprising the steps of:
- providing a basic hot-melt adhesive;
- and
- blending an acidic copolymer with the hot-melt adhesive, wherein the acidic copolymer is derived from monomers comprising at least about 15% by weight of acidic monomers.
A method for improving cohesive strength of a hot-melt adhesive comprises the steps of:
- providing an acidic hot-melt adhesive;
- and
- blending a basic copolymer with the hot-melt adhesive,
- wherein the basic copolymer is derived from monomers comprising at least about 15% by weight of basic monomers.
Dependencies are inferred from the claim text.