Patent US5016749A successfully refreshed from Google Patents.
EP0090627A2
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Method for producing a plastic lens
Assignee: NOF Corp
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Filing: 1983-03-28
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Granted: —
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Expires: 2003-03-28
Abstract
Abstract A plastic lens which has high hardness and excellent scratch resistance and can form a transparent and uniform reflection preventing film through vacuum deposition, is produced by mixing (a) diethylene glycol bis(allyl carbonate) with (b) at least one of organic peroxides having a decomposition temperature at selected half-life value for ten hours of not higher than 80°C and (c) at least one of organic peroxides having a decomposition temperature at selected half-life value for ten hours of 90-110°C, which have no copolymerizability to the diethylene glycol bis(allyl carbonate) (a), as a polymerization initiator, and polymerizing and casting the resulting mixture in a desired lens-forming mold.
Inventors
- 👤 Yasuo Moriya
- 👤 Kyosuke Fukushi
- 👤 Masaharu Nakayama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 20:09
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/24; G; G02; G02B; G02B1/00; G02B1/04; G02B1/041
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A method for producing plastic lenses, which comprises mixing (a) diethylene glycol bis(allyl carbonate) with (b) at least one of organic peroxides having a decomposition temperature at selected half-life value for ten hours of not higher than 80°C and (c) at least one of organic peroxides having a decomposition temperature at selected half-life value for ten hours of 90-110°C, which have no copolymerizability to the diethylene glycol bis(allyl carbonate) (a), as a polymerization initiator, and polymerizing and casting the resulting mixture in a desired lens-forming mold.
Claim 2
Independent Claim
86 words
A method for producing plastic lenses, which comprises mixing (a) diethylene glycol bis(allyl carbonate) with (b) at least one of organic peroxides having a decomposition temperature at selected half-life value for ten hours of not higher than 80°C and (c) at least one of organic peroxides having a decomposition temperature at selected half-life value for ten hours of 90-110°C, which have no copolymerizability to the diethylene glycol bis(allyl carbonate) (a), as a polymerization initiator, and polymerizing and casting the resulting mixture in a desired lens-forming mold.
Claim 3
Dependent Claim
49 words
The method as claimed in claim 1, wherein the organic peroxides (b) having a decomposition temperature at selected half-life value for ten hours of not higher than 80°C are at least one of organic peroxides selected from the group consisting of (I) peroxyesters, (II) peroxydicarbonates and (III) diacyl peroxides.
Claim 4
Dependent Claim
35 words
The method as claimed in claim 2, wherein the peroxyesters (I) are at least one of organic peroxides selected from the group consisting of cumyl peroxyneodecanoate, tert.-butyl peroxyneodecanoate, tert.-butyl peroxypivalate, tert.-butyl peroxy(2-ethylhexanoate), and tert.-butyl peroxyisobutyrate.
Claim 5
Dependent Claim
44 words
The method as claimed in claim 2, wherein the peroxydicarbonates (II) are at least one of organic peroxides selected from the group consisting of di-allyl peroxydicarbonate, di-methallyl peroxydicarbonate, di-isopropyl peroxydicarbonate, di-normal-propyl peroxydicarbonate, di-myristyl peroxydicarbonate, di-(2-ethoxyethyl) peroxydicarbonate, di-(methoxy- isopropyl) peroxydicarbonate, di-(2-ethylhexyl) peroxydicarbonate and di-(3-methyl-3-methoxybutyl) peroxydicarbonate.
Claim 6
Dependent Claim
14 words
The method as claimed in claim 2, wherein the peroxydicarbonate (II) is isopropyl peroxydicarbonate.
Claim 7
Dependent Claim
40 words
The method as claimed in claim 2, wherein the diacyl peroxides (III) are at least one of organic peroxides selected from the group consisting of 3,5,5-trimethylhexanoyl peroxide, octanoyl peroxide, decanoyl peroxide, lauroyl peroxide, acetyl peroxide, meta-toluyl peroxide and benzoyl peroxide.
Claim 8
Dependent Claim
59 words
The method as claimed in claim 1, wherein the organic peroxides (c) having a decomposition temperature at selected half-life value for ten hours of 90-110°C and having no copolymerizability to diethylene glycol bis(allyl carbonate) are at least one of organic peroxides selected from the group consisting of peroxyesters (IV) ' , peroxycarbonates (V), peroxyketals (VI) and keton peroxides (VII).
Claim 9
Dependent Claim
40 words
The method as claimed in claim 7, wherein the peroxyesters (IV) are at least one of organic peroxides selected from the group consisting of tert..-butyl peroxymaleate, tert.-butyl peroxylaurate, tert.-butyl peroxy 3,5,5-trimethylhexanoate, 2,5-dimethyl-2,5-di(benzoyl peroxy)hexane, tert.-butyl peroxyacetate, tert.-butyl peroxybenzoate, tert.-butyl peroxyiso- phthalate.
Claim 10
Dependent Claim
14 words
The method as claimed in claim 7, wherein the peroxycarbonate (V) is tert.-butyl peroxyisopropylcarbonate.
Claim 11
Dependent Claim
34 words
The method as claimed in claim 7, wherein the peroxyketals (VI) are at least one of organic peroxides selected from the group consisting of l,l-bis(tert.-butyl peroxy)-3,3,5-trimethylcyclohexane, 1,1-bis(tert.-butylperoxy)cyclohexane, 2,2-bis(tert.-butyl peroxy)octane, 2,2-bis(tert.-butyl peroxy)butane, normal-butyl-4,4- bis(tert.-butyl peroxy)valerate.
Claim 12
Dependent Claim
24 words
The method as claimed in claim 7, wherein the ketone peroxides (VII) are at least one of cyclohexanone peroxide and methyl ethyl ketone peroxide.
References Cited (Backward Citations)
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