Formulation for silicone hydrogel, silicone hydrogel and method for forming silicone hydrogel

1. A formulation for silicone hydrogel, comprising:

at least one silicone monomer having a weight percent of the total hydrogel weight in a range from about 10% to about 35%;

at least one hydrophilic monomer having a weight percent of the total hydrogel weight in a range from about 15% to about 40%;

at least one crosslinker;

at least one initiator;

at least one solvent having a weight percent of the total hydrogel weight in a range from about 20% to about 50%; and

at least one additive having a weight percent of the total hydrogel weight in a range from about 1% to about 5%, the additive comprising alkyl alkoxysilanes.

2. A method of forming a silicone hydrogel, comprising:

providing and mixing at least one silicone monomer having a weight percent of the total hydrogel weight in a range from about 10% to about 35%, at least one hydrophilic monomer having a weight percent of the total hydrogel weight in a range from about 15% to about 40%, at least one crosslinker, and at least one initiator, and at least one additive having a weight percent of the total hydrogel weight in a range from about 1% to about 5%, to form a mixture, the additive comprising alkyl alkoxysilanes; and

cross-linking and curing the mixture by a UV-light curing process or a heating process, to form the silicone hydrogel.

3. The method of claim 2 , wherein the hydrophilic monomer comprises 2-hydroxyethyl methacrylate, N-dimethylacrylamide acrylamide, methacrylic acid, polyethylene glycol methacrylate, sulfobetaine methacrylate, or a mixture thereof.

4. The method of claim 2 , wherein the crosslinker comprises ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, N,N′-Methylenebisacrylamide, or a mixture thereof, a weight percent of the total hydrogel weight of the crosslinker is in a range from about 0.3% to about 1%.

5. The method of claim 2 , wherein the initiator is photo-initiator or heat-initiator, a weight percent of the total hydrogel weight of the initiator is in a range from about 0.4% to about 0.7%.

6. The method of claim 2 , wherein the mixture further comprises at least one solvent having a weight percent of the total hydrogel weight in a range from about 20% to about 50%.

7. A silicone hydrogel, which is a reaction product of at least one silicone monomer having a weight percent of the total hydrogel weight in a range from about 10% to about 35%, at least one hydrophilic monomer having a weight percent of the total hydrogel weight in a range from about 15% to about 40%, at least one crosslinker, and at least one initiator; and at least one additive having a weight percent of the total hydrogel weight in a range from about 1% to about 5%, the additive comprising alkyl alkoxysilanes.

8. The silicone hydrogel of claim 7 , wherein the silicone monomer comprises silicone-containing monomer, macromer, or a mixture thereof.

9. The silicone hydrogel of claim 7 , wherein the hydrophilic monomer comprises 2-hydroxyethyl methacrylate, N-dimethylacrylamide acrylamide, methacrylic acid, polyethylene glycol methacrylate, sulfobetaine methacrylate, or a mixture thereof.

10. The silicone hydrogel of claim 7 , wherein the crosslinker comprises ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, N,N′-Methylenebisacrylamide, or a mixture thereof.

11. The silicone hydrogel of claim 7 , wherein a weight percent of the total hydrogel weight of the crosslinker is in a range from about 0.3% to about 1%.

12. The silicone hydrogel of claim 7 , wherein the initiator is photo-initiator or heat-initiator, a weight percent of the total hydrogel weight of the initiator is in a range from about 0.4% to about 0.7%.

13. The silicone hydrogel of claim 7 , further comprising at least one solvent having a weight percent of the total hydrogel weight in a range from about 20% to about 50%.