Long-wearable soft contact lens

• US 20060211789A1
• Filed: 05/22/2006
• Published: 09/21/2006
• Est. Priority Date: 12/16/1999
• Status: Abandoned Application

• Current Assignee: Coopervision International Limited (The Cooper Cos., Inc.)
• Original Assignee: AsahiKasei Aime Co. Ltd. (Asahi Kasei Corporation)
• Inventors: Hoki, Tsuneo, Ikawa, Seiichirou, Iwata, Junichi
• Application Number:
  US11/437,732
• Publication Number:
  US 20060211789A1
• Time in Patent Office: Days
• US Class Current: 523/106
• CPC Class Codes: B29D 11/00125 Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
• CPC Class Codes: C08F 220/1806 C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate
• CPC Class Codes: C08F 220/54 Amides , e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
• CPC Class Codes: C08F 222/102 of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
• CPC Class Codes: C08F 226/02 by a single or double bond to nitrogen
• CPC Class Codes: C08F 226/10 N-Vinyl-pyrrolidone
• CPC Class Codes: C08F 230/08 containing silicon
• CPC Class Codes: C08F 283/12 on to polysiloxanes
• CPC Class Codes: C08F 290/06 Polymers provided for in subclass C08G
• CPC Class Codes: C08F 290/061 Polyesters; Polycarbonates
• CPC Class Codes: C08F 290/065 Polyamides; Polyesteramides; Polyimides
• CPC Class Codes: C08F 290/068 Polysiloxanes
• CPC Class Codes: C08L 43/04 Homopolymers or copolymers of monomers containing silicon
• CPC Class Codes: C08L 51/085 on to polysiloxanes
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: G02B 1/043 Contact lenses
• CPC Class Codes: G02C 7/04 Contact lenses for the eyes disinfection or sterilisation of contact lenses A61L12/00

Abstract

A mold for producing a soft contact lens, wherein the mold is capable of forming both front and rear surfaces of the lens from a surface of the mold during polymerization of a monomer composition.

Claims

1. A mold for producing a contact lens, wherein said mold is capable of forming both front and rear surfaces of said contact lens from a surface of said mold during polymerization of a monomer composition in said mold and comprises a resin of polyethylene terephthalate.

3. A Contact lens produced by the mold according to claim 1, wherein said contact lens is a hydrogel soft contact lens manufactured by a polymerization of at least one kind of siloxane monomer.

4. A Contact lens produced by the mold according to claim 1, wherein said contact lens is a hydrogel soft contact lens manufactured by a copolymerization of at least one kind of hydrophilic polysiloxane monomer of the formula (1) and at least one kind of a hydrophilic monomer:

5. A Contact lens produced by the mold according to claim 1, wherein said contact lens is a contact lens manufactured by a copolymerization of at least a kind of siloxane group-containing monomer and at least one kind of hydrophilic monomer.

10. The mold according to claim 1, which comprises an enhanced crystallinity polyethylene terephthalate.

11. The mold according to claim 1, which comprises a drawn film of polyethylene terephthalate.

2. A mold for producing a contact lens, wherein said mold is capable of forming both front and rear surfaces of said contact lens from a surface of said mold during polymerization of a monomer composition in said mold and comprises a resin of an ethylene-vinylalcohol copolymer with an ethylene copolymerization ratio of about 25-50% by mole.

6. A method for producing a hydrogel soft contact lens comprising polymerizing at least one siloxane monomer, said mold comprising a resin selected from the group consisting of nylon 66, nylon 6, polyethylene terephthalate and ethylene-vinyl alcohol copolymer.

7. The method according to claim 6, wherein said mold comprises ethylene-vinyl alcohol copolymer.

8. A method for producing a contact lens comprising copolymerizing at least one siloxane monomer and at least one hydrophilic monomer, said mold comprising a resin selected from the group consisting of nylon 66, nylon 6, polyethylene terephthalate and ethylene-vinyl alcohol copolymer.

9. The method according to claim 8, wherein said mold comprises ethylene-vinyl alcohol copolymer.

12. A method for producing a contact lens comprising photopolymerization by irradiating said mold with a light, said mold comprising a resin selected from the group consisting of nylon 66,-nylon 6, polyethylene terephthalate and ethylene-vinyl alcohol copolymer.

13. The method according to claim 12, wherein said mold comprises ethylene-vinyl alcohol copolymer.

14. A mold for directly producing a contact lens, comprising a surface capable of forming both front and rear surfaces of said contact lens during polymerization of a monomer composition, and wherein the mold material is a resin selected from the group consisting of polyamide, polyethylene terephthalate and ethylene-vinyl alcohol copolymer, and wherein at least one side of the mold for forming the lens surface has a contact angle to water not higher than 90°

.

15. A hydrophilic polysiloxane monomer represented by the formula (1):

16. The hydrophilic polysiloxane monomer according to claim 15, wherein the linkage ratio of the structural units (Ic), (IIc) and (IIIc) is ((Ic)+(IIc))/(IIIc)=1-50, (IIc)/(Ic)=0.01-0.5, and the total number of the units (Ic), (IIc) and (IIIc) is 20-500.

17. The hydrophilic polysiloxane monomer according to claim 15, wherein said Z1 in the formula (2) in claim 15 is —

NHCOO—

.

18. The hydrophilic polysiloxane monomer according to claim 15, wherein m in formula (2) is 2.

19. The hydrophilic polysiloxane monomer according to claim 15, wherein said n in formula (2) in is 3.

20. The hydrophilic polysiloxane monomer according to claim 15, wherein said q in formula (2) is 1.

21. The hydrophilic polysiloxane monomer according to claim 15, wherein the average of d in formula (4) is about 7.

22. An ophthalmic lens materials comprising the monomer according to claim 15.

23. A contact lens materials comprising the monomer according to claim 15.