Adhesive gels for respiratory masks
Adhesives for use on user-to-mask interfaces of a respiratory mask and methods of preparing the same are provided. The adhesive includes greater than or equal to about 1 wt. % to less than or equal to about 15 wt. % of one or more glycerides; greater than or equal to about 0.50 wt. % to less than or equal to about 5 wt. % of one or more polyacrylates; greater than or equal to about 1 wt. % to less than or equal to about 10 wt. % of one or more polyethers; greater than or equal to about 25 wt. % to less than or equal to about 45 wt. % of one or more N-vinylpyrrolidone polymers; and a balance of water. The method includes forming a first aqueous mixture, forming a second aqueous mixture, and admixing the first aqueous mixture and the second aqueous mixture to form a substantially homogeneous mixture that defines the adhesive.
1. An adhesive for use on a user-to-mask interface of a respiratory mask, the adhesive comprising:
greater than or equal to about 1 wt. % to less than or equal to about 15 wt. % of glycerol;
greater than or equal to about 0.70 wt. % to less than or equal to about 3 wt. % of one or more polyacrylates;
greater than or equal to about 1 wt. % to less than or equal to about 10 wt. % of one or more polyethers;
greater than or equal to about 25 wt. % to less than or equal to about 45 wt. % of one or more N-vinylpyrrolidone polymers;
greater than or equal to about 0.50 wt. % to less than or equal to about 2 wt. % of triethylamine;
greater than or equal to about 10 wt. % to less than or equal to about 35 wt. % ethanol; and
a balance of water.
2. The adhesive of claim 1 , wherein the one or more polyethers comprises poly(ethylene glycol).
3. The adhesive of claim 1 , wherein the one or more N-vinylpyrrolidone polymers comprises polyvinylpyrrolidone.
4. An adhesive for use on a user-to-mask interface of a respiratory mask, the adhesive comprising:
greater than or equal to about 3 wt. % to less than or equal to about 12 wt. % of glycerol;
greater than or equal to about 0.70 wt. % to less than or equal to about 3 wt. % of one or more polyacrylates;
greater than or equal to about 2 wt. % to less than or equal to about 5 wt. % of poly(ethylene glycol);
greater than or equal to about 30 wt. % to less than or equal to about 40 wt. % of polyvinylpyrrolidone;
greater than or equal to about 0.50 wt. % to less than or equal to about 2 wt. % of triethylamine;
greater than or equal to about 10 wt. % to less than or equal to about 35 wt. % ethanol; and
a balance of water.
5. A method for forming the adhesive of claim 1 for use on a user-to-mask interface of a respiratory mask, the method comprising:
forming a first aqueous mixture comprising:
glycerol,
a first amount of one or more polyacrylates,
one or more polyethers,
one or more N-vinylpyrrolidone polymers, and
a balance of water;
forming a second aqueous mixture comprising:
a second amount of one or more polyacrylates,
triethylamine,
ethanol, and
a balance of water; and
admixing the first aqueous mixture and the second aqueous mixture to form a substantially homogeneous mixture that defines the adhesive of claim 1 .
6. The method of claim 5 , wherein the one or more polyethers comprises poly(ethylene glycol) and the one or more N-vinylpyrrolidone polymers comprises polyvinylpyrrolidone.
7. The method of claim 6 , wherein forming the second aqueous mixture comprises:
admixing the second amount of one or more polyacrylates and triethylamine to form a first submixture;
contacting ethanol and water to the first submixture to form a second submixture; and
admixing the second submixture to form a substantially homogeneous mixture that defines the second aqueous mixture.
8. The method of claim 5 , wherein the first mixture further comprises: one or more amines and one or more alcohols.
9. The method of claim 8 , wherein forming the first aqueous mixture comprises:
admixing glycerol and water to form a first submixture;
admixing the first submixture and the first amount of one or more polyacrylates to form a second submixture;
admixing the second submixture and the one or more amines to form a third submixture; and
admixing the third submixture and the one or more polyethers, the one or more N-vinylpyrrolidone polymers, and the one or more alcohols to form a substantially homogeneous mixture that defines the first aqueous mixture.