Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2020117777 - COPOLYMÈRE DE PVP POUR L'EMBALLAGE D'UN PRODUIT CHIMIQUE AGRESSIF

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

What is claimed:

1. A unit dose package comprising:

a polymeric dissolution packet comprising a film; and

a chemical sealed in the polymeric dissolution packet;

wherein the film comprises:

a polyvinyl alcohol copolymer consisting essentially of:

(a) from 80 to 99 mole percent of vinyl alcohol and vinyl ester monomer; and

(b) from 1 to 20 mole percent of a pyrrolidone comonomer; and having a degree of hydrolysis in the range from about 65% to about

99%;

a plasticizer;

wherein the chemical comprises at least one of a peroxide, a nitrate, a nitrite, a chromate, a persulfate, a borate, a bromate, a chlorate, a periodate, a chlorite, a chlorinated or brominated isocyanurate, an inorganic acid, an organic acid, a peroxy acid, potassium superoxide, and salts and hydrates of these compounds; and

wherein the film has a %dissolution by weight in water at 21°C of at least 85 wt% following exposure to the chemical and aging at a temperature in the range from about 30°C to about 54°C for at least 4 weeks.

2. The unit dose package of claim 1, wherein the chemical is selected from the group consisting of dichloroisocyanuric acid, Calcium hypochlorite, trichloroisocyanuric acid, l-bromo-3-chloro-5,5-dimethylhydantoin, l,3-dibromo-5,5-dimethylhydantoin, 2,3-dibromo-3-nitrilopropionamide; 2-bromo-2-nitro- 1 ,3-propanediol, sodium bisulfate, tartaric acid, fumaric acid, oxalic acid, sodium percarbonate, sodium carbonate, sodium bicarbonate, cyanuric acid, and potassium monopersulfate.

3. The unit dose package of claim 1, wherein the chemical is undiluted.

4. The unit dose package of claim 1, wherein the plasticizer is a solid at room temperature and pressure.

5. The unit dose package of claim 1, the film further comprising an additive selected from the group consisting of dextrose, a bromine scavenger, a chlorine scavenger, ammonium chloride, citric acid, starch, potassium bicarbonate, ammonium chloride, polypropylene glycol, starch, and sodium bisulfite.

6. The unit dose package of claim 1, wherein the film has one or more of the following properties when tested according to ASTM D882:

a. a 10% modulus at equilibrium conditions of 30°C and 20% relative humidity of at least 40 MPa;

b. a tensile strength at equilibrium conditions of 30°C and 20% relative humidity of at least 60 MPa;

c. an elongation at break at equilibrium conditions of 30°C and 20% relative humidity in the range from about 20% to about 80%;

d. have an elongation at break at equilibrium conditions of 23°C and 50% relative humidity in the range from about 100% to about 250%; e. a 100% modulus at equilibrium conditions of 23°C and 50% relative humidity in the range from about 15 to about 40 MPa;

f. an elongation at break at equilibrium conditions of 10°C and 70% relative humidity in the range from about 15% to about 260%;

g. a 100% modulus at equilibrium conditions of 10°C and 70% relative humidity in the range from about 9 to about 25 MPa.

7. The unit dose package of claim 1, wherein the plasticizer comprises alkoxylated trimethylol propane, trimethylol propane, or diglycerine, or a combination thereof, and when present, each is individually present in an amount in the range from about 1 wt% to about 12 wt%, based on a total weight of the film.

8. The unit dose package of claim 1, wherein the plasticizer comprises alkoxylated trimethylol propane, trimethylol propane, or diglycerine, or a combination thereof, and when present, each is individually present in an amount in the range from about 2 wt% to about 4 wt%, based on a total weight of the film.

9. A water-soluble film having stability with harsh chemicals, the film comprising:

a polyvinyl alcohol copolymer consisting essentially of:

(a) from 80 to 99 mole percent of vinyl alcohol and vinyl ester monomer; and

(b) from 1 to 20 mole percent of a pyrrolidone comonomer;

and having a degree of hydrolysis in the range from about 65% to about 99%; a plasticizer; and

wherein the film has a %dissolution by weight in water at 21°C of at least 85 wt% following exposure to a chemical and aging at a temperature in the range from about 30°C to about 54°C for at least 4 weeks, wherein the chemical is selected from the group consisting of dichloroisocyanuric acid, calcium hypochlorite, trichloroisocyanuric acid, l-bromo-3-chloro -5,5-dimethylhydantoin, 1,3- dibromo-5,5-dimethylhydantoin, 2,3-dibromo-3-nitrilopropionamide; 2-bromo-2- nitro- 1,3 -propanediol, sodium bisulfate, tartaric acid, fumaric acid, oxalic acid, sodium percarbonate, sodium carbonate, sodium bicarbonate, cyanuric acid, and potassium monopersulfate.

10. The water soluble film of claim 9, wherein the film is compatible with each of dichloroisocyanuric acid, calcium hypochlorite, trichloroisocyanuric acid, 1 -bromo-3 -chloro-5 ,5-dimethylhydantoin, 1 ,3 -dibromo-5 ,5-dimethylhydantoin,

2,3-dibromo-3-nitrilopropionamide; 2-bromo-2-nitro- 1,3-propanediol, sodium bisulfate, tartaric acid, fumaric acid, oxalic acid, sodium percarbonate, sodium carbonate, sodium bicarbonate, cyanuric acid, and potassium monopersulfate.

11. The water soluble film of claim 9, wherein the plasticizer comprises alkoxylated trimethylol propane, trimethylol propane, or diglycerine, or a combination thereof, and when present, each is individually present in an amount in the range from about 1 wt% to about 12 wt%, based on a total weight of the film.

12. The water soluble film of claim 9, wherein the plasticizer comprises alkoxylated trimethylol propane, trimethylol propane, or diglycerine, or a combination thereof, and when present, each is individually present in an amount in the range from about 2 wt% to about 4 wt%, based on a total weight of the film.

13. The water soluble film of claim 9, wherein the plasticizer is a solid at room temperature and pressure.

14. The water-soluble film of claim 9, wherein the plasticizer has at least 2 hydroxyl groups per molecule.

15. The water-soluble film of claim 9, wherein the plasticizer is present in an amount of 1 to 10 parts per hundred parts polyvinyl alcohol copolymer.

16. The water-soluble film of claim 9, wherein the polyvinyl alcohol copolymer contains from 3 to 7 mole percent of the pyrrolidone comonomer.

17. The water-soluble film of claim 9, further comprising an additive selected from the group consisting of dextrose, a bromine scavenger, a chlorine scavenger, ammonium chloride,

citric acid, starch, potassium bicarbonate, ammonium chloride, polypropylene glycol, starch, and sodium bisulfite.

18. The water-soluble film of claim 17, wherein the additive is a crystalline solid at room temperature and pressure.

19. The water-soluble film of claim 9, further comprising dextrose, wherein the dextrose is present in an amount in the range from about 1 to about 10 parts per hundred parts polyvinyl alcohol copolymer.

20. The unit dose package of claim 9, wherein the film has one or more of the following properties when tested according to ASTM D882:

a. a 10% modulus at equilibrium conditions of 30°C and 20% relative humidity of at least 40 MPa;

b. a tensile strength at equilibrium conditions of 30°C and 20% relative humidity of at least 60 MPa;

c. an elongation at break at equilibrium conditions of 30°C and 20% relative humidity in the range from about 20% to about 80%;

d. have an elongation at break at equilibrium conditions of 23°C and 50% relative humidity in the range from about 100% to about 250%; e. a 100% modulus at equilibrium conditions of 23°C and 50% relative humidity in the range from about 15 to about 40 MPa;

f. an elongation at break at equilibrium conditions of 10°C and 70% relative humidity in the range from about 15% to about 260%;

g. a 100% modulus at equilibrium conditions of 10°C and 70% relative humidity in the range from about 9 to about 25 MPa.

21. A water-soluble film having stability with multiple harsh chemicals, the film comprising: a polyvinyl alcohol copolymer consisting essentially of:

(a) from 80 to 99 mole percent of vinyl alcohol and vinyl ester monomer; and

(b) from 1 to 20 mole percent of a pyrrolidone comonomer;

a plasticizer;

wherein the film is compatible with each of the following chemical groups: peroxides, nitrates, nitrites, chromates, persulfates, borates, bromates, chlorates, periodates, chlorites, chlorinated or brominated isocyanurates, inorganic acids, organic acids, peroxy acids, superoxides, and salts and hydrates of these compounds.

22. The water soluble film of claim 21, wherein the film is compatible with each of dichloroisocyanuric acid, calcium hypochlorite, trichloroisocyanuric acid, l-bromo-3- chloro -5,5-dimethylhydantoin, l,3-dibromo-5,5-dimethylhydantoin, 2,3-dibromo-3- nitrilopropionamide; 2-bromo-2-nitro- 1,3 -propanediol, sodium bisulfate, tartaric acid, fumaric acid, oxalic acid, sodium percarbonate, sodium carbonate, sodium bicarbonate, cyanuric acid, and potassium monopersulfate.

23. The water soluble film of claim 21, wherein the plasticizer comprises alkoxylated trimethylol propane, trimethylol propane, or diglycerine, or a combination thereof, and when present, each is individually present in an amount in the range from about 1 wt% to about 12 wt%, based on a total weight of the film.

24. The water soluble film of claim 21, wherein the plasticizer comprises alkoxylated trimethylol propane, trimethylol propane, or diglycerine, or a combination thereof, and when present, each is individually present in an amount in the range from about 2 wt% to about 4 wt%, based on a total weight of the film.

25. The water soluble film of claim 21, wherein the film has one or more of the following properties when tested according to ASTM D882:

a. a 10% modulus at equilibrium conditions of 30°C and 20% relative humidity of at least 40 MPa;

b. a tensile strength at equilibrium conditions of 30°C and 20% relative humidity of at least 60 MPa;

c. an elongation at break at equilibrium conditions of 30°C and 20% relative humidity in the range from about 20% to about 80%;

d. have an elongation at break at equilibrium conditions of 23°C and 50% relative humidity in the range from about 100% to about 250%; e. a 100% modulus at equilibrium conditions of 23°C and 50% relative humidity in the range from about 15 to about 40 MPa;

f. an elongation at break at equilibrium conditions of 10°C and 70% relative humidity in the range from about 15% to about 260%;

g. a 100% modulus at equilibrium conditions of 10°C and 70% relative humidity in the range from about 9 to about 25 MPa.

26. The water-soluble film of claim 21, wherein the film has a %dissolution by weight in water at 21°C of at least 85 wt% following exposure to a chemical and aging at a temperature in the range from about 30°C to about 54°C for 4 to 12 weeks, wherein the chemical is selected from the group consisting of dichloroisocyanuric acid, calcium hypochlorite, trichloroisocyanuric acid, l-bromo-3-chloro -5,5-dimethylhydantoin, 1,3- dibromo-5,5-dimethylhydantoin, 2,3-dibromo-3-nitrilopropionamide; 2-bromo-2-nitro- 1,3 -propanediol, sodium bisulfate, tartaric acid, fumaric acid, oxalic acid, sodium percarbonate, sodium carbonate, sodium bicarbonate, cyanuric acid, and potassium monopersulfate.

27. The water-soluble film of claim 21, wherein the plasticizer is a solid at room temperature and pressure, and wherein the additive is a crystalline solid at room temperature and pressure.