US4306780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly refractive copolymer of an ethylinically unsaturated alkylene oxide of bis-phenol-A and an ethylinically unsaturated aromatic compound for lens and a lens prepared therefrom
Assignee: Hoya Corp
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Filing: 1979-07-13
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Granted: 1981-12-22
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Expires: 1999-07-13
Abstract
Abstract The present invention relates to a copolymer for high refractive lens having a refractive index equal to or higher than 1.55, obtained by copolymerization of one or more of the first monomer component having the formula (I) ##STR1## wherein R 1 signifies hydrogen atom or methyl radical, R 2 signifies hydrogen atom or methyl radical, and m and n signify integers 0 to 4 in total, with one or more of the radically polymerizable second monomer component, homo-polymer of which has a refractive index equal to or higher than 1.55 and, if necessary, with the radically polymerizable third monomer component, the homo-polymer of which has a refractive index lower than 1.55 and to the lens prepared from said copolymer.
Inventors
- 👤 Niro Tarumi
- 👤 Makoto Tsuchiya
- 👤 Shigeo Komiya
- 👤 Eiichi Masuhara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:49
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; B; B29; B29C; B29C33/00; B29C33/0038; C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/30; C08F220/301; B29L; B29L2031/00; B29L2031/76; B29L2031/7602
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
119 words
An optical lens prepared from a highly refractive copolymer having a refractive index equal to or greater than 1.55 wherein said copolymer comprises: (1) about 3 to about 70 percent by weight of a first component having the general formula ##STR7## wherein R 1 is H or methyl; R 2 is H or methyl; m and n are zero or an integer of 1 to 4; and (2) about 97 to about 30 percent by weight of a radially polymerizable second component selected from the group consisting of ##STR8## wherein R has the same meaning as described above; X is H, chlorine bromine, methoxy, amino, nitro, phenyl or phenoxy and a, b and c are each 1 or 2.
Claim 2
Dependent Claim
119 words
An optical lens prepared from a highly refractive copolymer having a refractive index equal to or greater than 1.55 wherein said copolymer comprises: (1) about 3 to about 70 percent by weight of a first component having the general formula ##STR7## wherein R 1 is H or methyl; R 2 is H or methyl; m and n are zero or an integer of 1 to 4; and (2) about 97 to about 30 percent by weight of a radially polymerizable second component selected from the group consisting of ##STR8## wherein R has the same meaning as described above; X is H, chlorine bromine, methoxy, amino, nitro, phenyl or phenoxy and a, b and c are each 1 or 2.
Claim 3
Dependent Claim
29 words
An optical lens according to claim 1 wherein the highly refractive copolymer includes a radically polymerizable third monomer, the homopolymer of which has a refractive index lower than 1.55.
Claim 4
Dependent Claim
37 words
The optical lens of claim 1 wherein the first component of the copolymer is present at about 5 to about 40 weight % and the second component is present at about 95 to about 60% by weight.
Claim 5
Dependent Claim
50 words
The optical lens according to claim 2 wherein the highly refractive copolymer comprises about 3 to about 70 percent by weight of the first monomer; about 30 to about 97 percent by weight of the second monomer and about 0 to about 67 percent by weight of the third monomer.
Claim 6
Dependent Claim
13 words
The optical lens of claim 1 wherein the lens is an ophthalmic device.
Claim 7
Dependent Claim
27 words
An optical lens according to claim 1 wherein the highly refractive copolymer contain as said first monomer having the formula (I), bisphenol A dimethacrylate or 2,2-bis(4-methacryloxy-ethoxyphenyl) propane.
Claim 8
Dependent Claim
25 words
An optical lens according to claim 1 wherein the highly refractive copolymer contains as said second monomer having the formula (II), phenylmethacrylate, phenoxyethylacrylate or p-bromophenylmethacrylate.
Claim 9
Dependent Claim
21 words
An optical lens according to claim 1 wherein the highly refractive copolymer contains as said second monomer having formula (III), benzylmethacrylate.
Claim 10
Dependent Claim
25 words
An optical lens according to claim 1 wherein the highly refractive copolymer contains as said second monomer having the formula (IV), styrene, O-chlorostyrene or 2,6-dichlorostyrene.
Claim 11
Dependent Claim
27 words
An optical lens according to claim 2 wherein the highly refractive copolymer contains as said third monomer naphthyl-methacrylate, -naphthylmethacrylate, phenoxyethylacrylate, phenoxyethylmethacrylate, 1-vinylnaphthalene, 2-vinyl-naphthalene, 4-vinyl-biphenyl, divinylbenzene or vinylphenylsulfide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |