Granted Patent B2

US 12,617,983 · App. 18/248,647 · Granted May 5, 2026

Inventor: Frank Büteröwe (Borgholzhausen, DE)

Assignee: BOSTIK SA

C09J103/02C09J11/04C09J2301/312C09J2301/408

Abstract

Claims (20)

1 . Aqueous adhesive composition comprising:

a) from 20% to 60% by weight of an amylomaltase-treated starch or an amylomaltase-treated maltodextrin, compared to a total weight of the aqueous adhesive composition, wherein the amylomaltase-treated starch is obtained from native starch comprising from 15% to 30% by weight of amylose and from 70% to 85% by weight of amylopectin, the weight percent being based on the total weight of the native starch; and

b) ammonium zirconium carbonate.

2 . Aqueous adhesive composition according to claim 1 , wherein the native starch is selected from the group consisting of potato starch, wheat starch, maize starch, rice starch, peas starch, tapioca starch, wrinkled pea starch, mung bean starch, and mixtures thereof.

3 . Aqueous adhesive composition according to claim 1 , wherein the native starch is potato starch.

4 . Aqueous adhesive composition according to claim 1 , comprising more than 40% by weight of water, compared to the total weight of said aqueous composition.

5 . Aqueous adhesive composition according to claim 1 , comprising from 0.10% to 1.0% by weight, of ammonium zirconium carbonate (dry matter) compared to the total weight of the aqueous adhesive composition.

6 . Aqueous adhesive composition according to claim 1 , comprising at least one additive selected from the group consisting of biocide, defoamer, plasticizer, rheology modifier, coloring agent, wetting agent, pH regulator, inorganic filler, and mixtures thereof.

7 . Aqueous adhesive composition according to claim 1 , characterized in that it is free of boron compounds.

8 . Aqueous adhesive composition comprising:

a) from 20% to 60% by weight of an amylomaltase-treated starch or an amylomaltase-treated maltodextrin, compared to a total weight of the aqueous adhesive composition; and

b) ammonium zirconium carbonate, wherein the amylomaltase-treated maltodextrin is obtained from low DE maltodextrin having a Dextrose Equivalent (DE) lower than 10 (0 <DE <10).

9 . Aqueous adhesive composition according to claim 8 , wherein the low DE maltodextrin has a dextrose equivalent lower than 5 (0 <DE <5).

10 . Aqueous adhesive composition comprising:

a) from 20% to 60% by weight of an amylomaltase-treated starch or an amylomaltase-treated maltodextrin, compared to a total weight of the aqueous adhesive composition; and

b) ammonium zirconium carbonate, wherein the aqueous adhesive composition has a viscosity ranging from 100 mPa.s. to 5,000 mPa.s at 23° C.

11 . Aqueous adhesive composition according to claim 10 , having a pH ranging from 7 to 10.

12 . Rigid packaging or tubes comprising the aqueous adhesive composition according to claim 10 .

13 . A method of manufacturing a rigid cylindrical core comprising winding a paper or paperboard material onto a cylindrical mandrel at a given wind angle, wherein the material is wound such that each winding at least partially overlaps a previous winding, applying the aqueous adhesive composition according to claim 10 to a seam or an overlapping portion of the material such that the paperboard or paper material adheres to itself at the seam or overlapping portion thereby creating a rigid cylindrical core.

14 . The method of claim 13 , wherein the rigid cylindrical core comprises a paper towel core, a toilet paper core, or a core for protection of alcohol bottle.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (19)