Fast bonding hair/eyelash extension adhesive compositions based on medical grade high viscosity cyanoacrylates
A fast-bonding and long-lasting adhesive composition with a high viscosity for attaching eyelash/hair extension systems to human eyelash/hair, comprising: a cyanoacrylate monomer having a straight alkyl chain length of from 4 to 16 carbon atoms; an organic polymer thickening agent; an inorganic thickening agent; and a bonding accelerator, wherein the inorganic thickening agent does not separate from the composition.
1. An adhesive composition, comprising a mixture of:
a cyanoacrylate monomer selected from the group consisting of 2-octyl cyanoacrylate monomer, n-butyl cyanoacrylate monomer, and a mixture of 2-octyl cyanoacrylate monomer and n-butyl cyanoacrylate monomer, about 200 to about 15,000 parts per million (ppm) of butylated hydroxyl anisole and about 10 ppm to about 200 ppm of sulfur dioxide,
an organic polymer thickening agent comprising a partial polymer of 2-octyl cyanoacrylate,
about 0.8% to 7% by weight of untreated fumed silica, and
about 0.02% to 0.5% by weight of 18-crown-6 crown ether,
wherein the composition has a viscosity of from about 100,000 to about 500,000 centipoise (cps).
2. The composition of claim 1 , wherein the adhesive composition has a viscosity of from about 200,000 cps to about 500,000 cps.
3. The composition of claim 2 , wherein the adhesive composition has a viscosity of from about 300,000 cps to about 500,000 cps.
4. The composition of claim 3 , wherein the adhesive composition has a viscosity of from about 350,000 cps to about 500,000 cps.
5. The composition of claim 1 , wherein the untreated fumed silica has a surface area of from about 50 m 2 /g to about 500 m 2 /g.
6. The composition of claim 5 , wherein the untreated fumed silica has a surface area of from about 80 m 2 /g to about 400 m 2 /g.
7. The composition of claim 1 , wherein the composition bonds in less than 15 seconds.
8. The composition of claim 7 , wherein the composition bonds in less than 10 seconds.
9. The composition of claim 8 , wherein the composition bonds in less than 4 seconds.
10. The composition of claim 1 wherein the composition further comprises a black colorant.
11. An adhesive composition, comprising:
a mixture of n-butyl cyanoacrylate monomer, about 200 to about 15,000 parts per million (ppm) of butylated hydroxyl anisole, about 10 ppm to about 200 ppm of sulfur dioxide, 2-octyl cyanoacrylate partial polymer; from about 0.8 to about 7.0% by weight of untreated fumed silica; from about 0.02% to about 0.5% by weight of 18-crown-6 crown ether; and from about 0.02% to about 1% of carbon black, wherein the composition has a viscosity of from about 100,000 to about 500,000 centipoise (cps).
12. The composition of claim 11 wherein the mixture of n-butyl cyanoacrylate monomer and 2-octyl cyanoacrylate partial polymer comprises at least 60% by weight of n-butyl cyanoacrylate monomer.
13. The composition of claim 1 wherein the cyanoacrylate monomer is n-butyl cyanoacrylate.
14. The composition of claim 1 , wherein the cyanoacrylate monomer is 2-octyl cyanoacrylate.
15. The composition of claim 11 , wherein the untreated fumed silica has a surface area of from about 50 m 2 /g to about 500 m 2 /g.
16. The composition of claim 11 , wherein the untreated fumed silica has a surface area of from about 80 m 2 /g to about 400 m 2 /g.
17. The composition of claim 11 , wherein the adhesive composition has a viscosity of from about 200,000 cps to about 500,000 cps.
18. The composition of claim 11 , wherein the adhesive composition has a viscosity of from about 300,000 cps to about 500,000 cps.
19. The composition of claim 11 , wherein the adhesive composition has a viscosity of from about 350,000 cps to about 500,000 cps.