Material forming supramolecular structures, process and uses
AssigneeHenkel AG & Co. KGaA
InventorsWayne Hayes, Philip James Woodward, Alex Clarke, Andrew Trevithick Slark
Life of this patent
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Abstract
A novel material, forming supramolecular structures below its transition temperature, which contains at least one C═O and/or C═S group and at least one N—H, O—H and/or S—H group and wherein the material has the structure A(-X—B)n (1) wherein A, X, B and n are defined. Also a process for preparation of the material and uses thereof.
Claims16
A hot melt adhesive comprising a material, forming supramolecular structures below its transition temperature, characterised in that the material contains at least one C═O and/or C═S group and at least one N—H, O—H and/or S—H group and wherein the material has the structure
- A(-X—B)n (1)
- wherein A is a polymeric segment with at least 3 monomeric repeating units of cyclic, aromatic and/or aliphatic group but A does not include polyether or polyurethane, n being a number of 1 to 4, —X—B is, if n is 2, the same or different, and if n is 3 or 4, the same, partly the same or different and has one of the structures (2) to (4)
- —NH—C(Y)—Y—B (2)
- —NH—C(Y)—NR—B (3)
- —Y—C(Y)—NR—B (4)
- with Y being an Oxygen and/or Sulfur atom, B being an organic group with at least one Nitrogen atom which is bound to at least two carbon atoms when B is linear, and where the Nitrogen atom is bound to at least one carbon atom when B is branched, and R being a Hydrogen atom, and/or aliphatic group or another B group which is the same or different;
- wherein the material can be repeatedly heated above its transition temperature to a fluid form and cooled below its transition temperature to a solid form.
A hot melt adhesive, comprising:
- a material, forming supramolecular structures below its transition temperature, characterised in that the material contains at least one C═O and/or C═S group and at least one N—H, O—H and/or S—H group and wherein the material has the structure
- A(-X—B)n (1)
- wherein A is a cyclic, aromatic and/or aliphatic group but A is not polyurethane, n being a number of 1 to 4, —X—B is, if n is 2, the same or different, and if n is 3 or 4, the same, partly the same or different and has one of the structures (2) to (4)
- —NH—C(Y)—Y—B (2)
- —NH—C(Y)—NR—B (3)
- —Y—C(Y)—NR—B (4)
- with Y being an Oxygen and/or Sulfur atom, B being an organic group with at least one Nitrogen atom which is bound to at least two carbon atoms when B is linear, and where the Nitrogen atom is bound to at least one carbon atom when B is branched, and R being a Hydrogen atom, and/or aliphatic group or another B group which is the same or different;
- wherein the adhesive is solid at room temperature but, upon heating, changes to a fluid state and on cooling the adhesive regains its solid form.
A material, forming supramolecular structures below its transition temperature selected from:
Dependencies are inferred from the claim text.