Water-soluble adhesive
View Patent ↗In one aspect, the invention provides a method of applying an adhesive to a paper substrate, the method comprising applying a liquid, water-soluble adhesive composition to the paper substrate, said liquid, water-soluble adhesive composition comprising an adhesive polymer dissolved in water and said adhesive polymer comprising a polyethyloxazoline. In another aspect, the invention also provides A liquid, water-soluble adhesive composition comprising adhesive polymer dissolved in water, wherein the adhesive polymer comprises one or more polyethyloxazolines in an amount of more than 50 wt % and up to 70 wt % based on the total weight of the water-soluble adhesive composition.
1. A method of applying an adhesive to a paper substrate, the method comprising applying a liquid, water-soluble adhesive composition to the paper substrate, said liquid, water-soluble adhesive composition comprising an adhesive polymer dissolved in water and said adhesive polymer comprising a polyethyloxazoline; wherein the total amount of polyethyloxazoline polymer in the water-soluble adhesive composition is from 52 wt % to 70 wt % based on the total weight of water-soluble adhesive composition.
2. The method of claim 1 , wherein the polyethyloxazoline has a molecular weight of 500,000 Da or less.
3. The method of claim 1 , wherein the adhesive has a viscosity of from 5,000 to 50,000 MPa·s.
4. A liquid, water-soluble adhesive composition comprising adhesive polymer dissolved in water, wherein the adhesive polymer comprises one or more polyethyloxazolines in an amount of more than 50 wt % and up to 70 wt % based on the total weight of the water-soluble adhesive composition.
5. The adhesive of claim 4 , wherein the adhesive polymer is present at a level of from 52 wt % to 70 wt %.
6. The adhesive of claim 4 , wherein the adhesive polymer has a molecular weight of 500,000 Da or less.
7. The adhesive of claim 4 , wherein the adhesive has a viscosity of from 5,000 to 50,000 MPa·s.
8. An adhesive product comprising (i) a dispenser having a nozzle and (ii) the adhesive of claim 4 , wherein the adhesive is contained within the dispenser.
9. The adhesive product of claim 8 , wherein the nozzle has a perforation of from 0.5 to 3 mm for dispensing the adhesive.
10. The adhesive product of claim 8 , wherein the nozzle has a flat surface for applying the dispensed adhesive onto a surface.
11. A method of producing a liquid, water-soluble adhesive composition as defined in claim 4 , the method comprises dissolving one or more polyethyloxazolines in water, wherein the polyethyloxazolines are added so as to be present in the liquid, water-soluble adhesive composition in a total amount of over 50 and up to 70 wt % based on the total weight of water-soluble adhesive composition.