Moisture regulating composition and support material containing said moisture-regulation composition

1 . A package comprising a packaging element made of a support material comprising a coating layer containing a moisture regulating composition, the moisture regulating composition comprising: 20-60 weight percent on total dry weight basis of at least one Metal-organic framework compound and 80-40 weight percent on total dry weight basis of at least one binder material, wherein the at least one Metal-organic framework compound is chosen in a group comprising:

Aluminium Fumarate (C 12 H 6 Al 2 O 12 ),

chromium terephthalate Metal-organic frameworks MIL-101 (Cr), comprising trimeric chromium (III) octahedral clusters interconnected by 1,4-benzenedicarboxylates and having empirical formula [Cr 3 (O)X(bdc) 3 (H 2 O) 2 ], wherein bdc is benzene-1,4-dicarboxylate and X is OH or F,

functionalized chromium terephthalate Metal-organic frameworks MIL-101(Cr)-X, where X denotes an electron withdrawing group selected from NO 2 , SO 3 H and Cl, or an electron donor group selected from NH 2 and CH 3 ,

iron terephthalate Metal-organic frameworks MIL-101(Fe),

chromium-based Metal-organic frameworks with underlying soc topology Cr-soc-Metal-organic framework-1 with chemical formula [Cr 3 (μ3-O)(H 2 O)2(TCPT)1.5Cl] where TCPT is tetratopic 3,3″,5,5″-tetrakis(4-carboxyphenyl)-p-terphenyl ligand,

isostructural Zr(IV)-MOFs with rare low-symmetric 9-connected Zr6 MOFs, indicated as Zr(IV)-MOFs BUT-46F, BUT-46A, BUT-46W, and BUT-46B,

hybrid microporous highly connected rare-earth-based Metal-organic frameworks Y-shp-MOF-5, where “shp” denotes square hexagonal prism,

or any combination thereof,

wherein the at least one binder is chosen in a group comprising: starch ((C 6 H 10 O 5 )n-(H 2 O)), alginic acids ((C 6 H 8 O 6 )n), alginates, copolymers of polyacrylic acid ((C 3 H 4 O 2 )n), and/or copolymers of maleic acid (HO 2 CCH═CHCO 2 H), polyaspartic acid ((C 4 H 5 NO 3 )n), polyvinylalcohol-co-ethylene (EVOH, C 4 H 8O ), polyvinylalcohol-co-vinyl acetate, polyethylene oxide ((—CH 2 CH 2 O—)n), or any combination thereof;

wherein the coating layer containing the moisture regulating composition has a thickness comprised between 10 micrometres and 80 micrometres.

2 . A package according to claim 1 , wherein the support material is a fiber-based material or plastic support material.

3 . A package according to claim 2 , wherein the support material is selected from the group consisting of paper, paperboard, textiles, fabrics, non-wovens, polymers, polymer foams, and polymer films.

4 . A package according to claim 2 , where the support material comprises between 20 grams and 300 grams of the moisture regulating composition per square meter of the support material, and wherein the relative weight ratio between the at least one Metal-organic framework and the at least one binder is between 1:4 and 3:2.

5 . A package according to claim 2 wherein the moisture regulating composition is impregnated in the support material.

6 . A package according to claim 2 , wherein the support material comprises a support layer made of fiber-based material or plastics material and the coating layer containing the moisture regulating composition is applied on the support layer, so that an amount of the moisture regulating composition in the support material is comprised between 20 grams per square meter and 300 grams per square meter.

7 . A package according to claim 2 , wherein the support material is a foamed support material having a density between 10000 grams per cubic meter and 90000 grams per cubic meter.

8 . A package according to claim 2 comprising an amount of at least one Metal-organic framework comprised between 0.30 grams and 5.00 grams.

9 . Method for preparing a package according to claim 2 , wherein the method comprises the following steps:

a) preparing the packaging element, wherein preparing the packaging element comprises the following steps:

a-i) providing the support material;

a-ii) providing an impregnating bath of a moisture regulating solution containing the moisture regulating composition and a solvent;

a-iii) immersing the support material into the impregnating bath until the support material is impregnated with the solution of the impregnating bath; and

a-iv) drying the support material to evaporate the solvent from the support material so as to obtain a support material comprising the at least one Metal-organic framework exhibiting a moisture content which would be in equilibrium at the temperature of 23 Celsius and the pressure of 1 atmosphere with a mixture air-water characterized by a relative humidity comprised between about 0 and 25 percent, according to the corresponding sorption isotherm of the at least one Metal-organic framework; and

b) inserting at least a portion of the packaging element into the package.

10 . Method for preparing a package according to claim 2 , wherein the method comprises the following steps:

a1) preparing the packaging element, wherein preparing the packaging element comprises the following steps:

a1-i) providing the support material;

a1-ii) providing an impregnating bath of a moisture regulating solution containing the moisture regulating composition and a solvent;

a1-iii) immersing the support material into the impregnating bath until the support material is impregnated with the solution of the impregnating bath and

a1-iv) drying the support material to evaporate the solvent from the support material so as to obtain a support material comprising the at least one Metal-organic framework exhibiting a moisture content comprised between about 0 weight percent and 25 weight percent based on the weight of the at least one Metal-organic framework without water; and

b) inserting at least a portion of the packaging element into the package.

11 . Method according to claim 10 , further comprising after step a1-iii) and before step a1-iv) the following step:

feeding the support material impregnated with the solution of the impregnating bath to metering rolls to remove excess solution from the support.

12 . Method according to claim 9 , wherein the support material is a web of support material that is continuously supplied to the impregnating bath.

13 . A package comprising a packaging element made of a support material comprising a coating layer containing a moisture regulating composition, the moisture regulating composition comprising: 20-60 weight percent on total dry weight basis of at least one Metal-organic framework compound and 80-40 weight percent on total dry weight basis of at least one binder material, wherein the at least one Metal-organic framework compound is chosen in a group comprising:

Aluminium Fumarate (C 12 H 6 Al 2 O 12 ),

functionalized chromium terephthalate Metal-organic frameworks MIL-101(Cr)-X, where X denotes an electron withdrawing group selected from NO 2 , SO 3 H and Cl, or an electron donor group selected from NH 2 and CH 3 ,

chromium-based Metal-organic frameworks with underlying soc topology Cr-soc-Metal-organic framework-1 with chemical formula [Cr 3 (μ3-O)(H 2 O)2(TCPT)1.5Cl] where TCPT is tetratopic 3,3″,5,5″-tetrakis(4-carboxyphenyl)-p-terphenyl ligand,

isostructural Zr(IV)-MOFs with rare low-symmetric 9-connected Zr6 MOFs, indicated as Zr(IV)-MOFs BUT-46F, BUT-46A, BUT-46W, and BUT-46B,

hybrid microporous highly connected rare-earth-based Metal-organic frameworks Y-shp-MOF-5, where “shp” denotes square hexagonal prism,

or any combination thereof, and

wherein the at least one binder is chosen in a group comprising: wherein the at least one binder is chosen in a group comprising: carboxymethyl cellulose (CMC, C 6 H 7 O 2 (OH)2CH 2 COONa), hydroxyethylcellulose (C 29 H 52 O 21 ), hydroxypropylcellulose (C 36 H 70 O 19 ), or any combination thereof;

wherein the coating layer containing the moisture regulating composition has a thickness comprised between 10 micrometres and 80 micrometres.

14 . A package according to claim 13 , wherein the support material is a fiber-based material or plastic support material.

15 . A package according to claim 14 , wherein the support material is chosen in a group comprising paper, paperboard, textiles, fabrics, non-wovens, polymers, polymer foams, and polymer films.

16 . A package according to claim 14 , where the support material comprises between 20 grams and 300 grams of the moisture regulating composition per square meter of the support material, and wherein the relative weight ratio between the at least one Metal-organic framework and the at least one binder is between 1:4 and 3:2.

17 . A package according to claim 14 , wherein the moisture regulating composition is impregnated in the support material.

18 . A package according to claim 14 , wherein the support material comprises a support layer made of fiber-based material or plastics material and a coating layer applied on the support layer, wherein the coating layer contains the moisture regulating composition, wherein the amount of the moisture regulating material in the support material is comprised between 20-300 grams per square meter.

19 . A package according to claim 15 , wherein the support material is a foamed support material having a density between 10000-900000 grams per cubic meter.

20 . A package according claim 13 , wherein the package comprises between 0.30 and 5.00 grams of the at least one Metal-organic framework or Metal-organic frameworks.

21 . Method for preparing a package according to claim 13 , wherein the method comprises the following steps:

c) preparing the packaging element, wherein preparing the packaging element comprises the following steps:

c-i) providing the support material;

c-ii) providing an impregnating bath of a moisture regulating solution containing the moisture regulating composition and a solvent;

c-iii) immersing the support material into the impregnating bath until the support material is impregnated with the solution of the impregnating bath; and

c-iv) drying the support material to evaporate the solvent from the support material so as to obtain a support material comprising the at least one Metal-organic framework exhibiting a moisture content which would be in equilibrium at the temperature of 23 Celsius and the pressure of 1 atmosphere with a mixture air-water characterized by a relative humidity comprised between about 0 and 25 percent, according to the corresponding sorption isotherm of the at least one Metal-organic framework; and

d) inserting at least a portion of the packaging element into the package.

22 . Method for preparing a package according to claim 13 , wherein the method comprises the following steps:

c1) preparing the packaging element, wherein preparing the packaging element comprises the following steps:

c1-i) providing the support material;

c1-ii) providing an impregnating bath of a moisture regulating solution containing the moisture regulating composition and a solvent;

c1-iii) immersing the support material into the impregnating bath until the support material is impregnated with the solution of the impregnating bath and

c1-iv) drying the support material to evaporate the solvent from the support material so as to obtain a support material comprising the at least one Metal-organic framework exhibiting a moisture content comprised between about 0 weight percent and 25 weight percent based on the weight of the at least one Metal-organic framework without water; and

d1) inserting at least a portion of the packaging element into the package.

23 . Method according to claim 22 and further comprising after step c1-iii) and before step c1-iv) the following step:

feeding the support material impregnated with the solution of the impregnating bath to metering rolls to remove excess solution from the support.

24 . Method according to claim 22 , wherein the support material is a web of support material that it continuously supplied to the impregnating bath.