US4495345A
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Optical element and optical polycarbonate resin composition for the preparation thereof
Assignee: Konica Minolta Inc
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Filing: 1983-03-11
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Granted: 1985-01-22
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Expires: 2003-03-11
Abstract
Abstract An optical element including an optical resin composition consisting essentially of a polycarbonate is disclosed. Said optical resin composition have a melt flow rate of more than or equal to 5.0 g/10 min. as measured based on ISO R-1133 Standard under the condition of 230° C. and 5 kgf. and have a glass transition point of more than or equal to 100° C. Said polycarbonate include a major repeating unit represented by the formula (I) or (II). ##STR1## wherein Ar 1 and Ar 2 each represent an arylene group or a cycloalkylene group; R represents an alkylene group, a cycloalkylene group, --O--, --O--Ar 3 --O--, --S--, --SO--, --SO 2 --, --SO 2 --Ar 3 --SO 2 --, --R 1 --Ar 4 --R 1 --, --O--R 1 --O--, ##STR2## --CONH--R 1 --NHCO--, or --Ar 5 --R 1 --; Ar 3 and Ar 4 each represent a phenylene group or a bisphenylene group; R 1 represents an alkylene group; R 2 represents an alkyl group; Ar 5 represents a cycloalkylene group, --R 1 --Ar 4 --R 1 --, --R 1 --Ar 5 --R 1 --, --R 1 --O--Ar 4 --O--R 1 --, or --R 1 --O--Ar 4 --X--Ar 4 --O--R 1 ; and X represents --SO 2 --, --CO--, an alkylene group, or --R 1 --Ar 4 --R 1 --.
Inventors
- 👤 Sota Kawakami
- 👤 Hideki Murata
- 👤 Satoshi Matsunaga
- 👤 Toshihiko Kiriki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:25
CPC Classifications
C; C08; C08L; C08L69/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
207 words
An optical element including an optical resin composition consisting essentially of a polycarbonate, said optical resin composition having a melt flow rate of at least 5.0 grams/10 minutes as measured based on International Standards Organization Reference 1133 Standard at 230° C. and 5 kg, said optical resin composition having a glass transition point of at least 100° C., said polycarbonate having a major repeating unit represented by Formula I or II, ##STR10## wherein Ar 1 and Ar 2 are each a cycloalkylene, R is selected from alkylene, cycloalkylene, --O--, --O--Ar 3 --O--, --S--, --SO--, --SO 2 --, --SO 2 --Ar 3 --SO 2 --, --R 1 --Ar 4 --R 1 --, --O--R 1 --O--, ##STR11## --CONH--R 1 --NHCO--, or --Ar 5 --R 1 --; Ar 3 and Ar 4 are individually phenylene or bisphenylene; R 1 is an alkylene; R 2 is an alkyl, Ar 5 is a cycloalkylene; and A is selected from an alkylene, a cycloalkylene, --R 1 --Ar 4 --R 1 --, --R 1 --Ar 5 --R 1 --, --R 1 --O--Ar 4 --O--R 1 --, or --R 1 --O--Ar 4 --X--Ar 4 --O--R 1 --; and X represents --SO 2 --, --CO--, an alkylene group, or --R 1 --Ar 4 --R 1 --.
Claim 2
Dependent Claim
207 words
An optical element including an optical resin composition consisting essentially of a polycarbonate, said optical resin composition having a melt flow rate of at least 5.0 grams/10 minutes as measured based on International Standards Organization Reference 1133 Standard at 230° C. and 5 kg, said optical resin composition having a glass transition point of at least 100° C., said polycarbonate having a major repeating unit represented by Formula I or II, ##STR10## wherein Ar 1 and Ar 2 are each a cycloalkylene, R is selected from alkylene, cycloalkylene, --O--, --O--Ar 3 --O--, --S--, --SO--, --SO 2 --, --SO 2 --Ar 3 --SO 2 --, --R 1 --Ar 4 --R 1 --, --O--R 1 --O--, ##STR11## --CONH--R 1 --NHCO--, or --Ar 5 --R 1 --; Ar 3 and Ar 4 are individually phenylene or bisphenylene; R 1 is an alkylene; R 2 is an alkyl, Ar 5 is a cycloalkylene; and A is selected from an alkylene, a cycloalkylene, --R 1 --Ar 4 --R 1 --, --R 1 --Ar 5 --R 1 --, --R 1 --O--Ar 4 --O--R 1 --, or --R 1 --O--Ar 4 --X--Ar 4 --O--R 1 --; and X represents --SO 2 --, --CO--, an alkylene group, or --R 1 --Ar 4 --R 1 --.
Claim 3
Dependent Claim
204 words
An optical resin composition consisting essentially of a polycarbonate, said optical resin composition having a melt flow rate of at least 5.0 grams/10 minutes as measured based on International Standards Organization Reference 1133 Standard at 230° C. and 5 kg, said optical resin composition having a glass transition point of at least 100° C., said polycarbonate having a major repeating unit represented by Formula I or II, ##STR12## wherein Ar 1 and Ar 2 are each a cycloalkylene, R is selected from alkylene, cycloalkylene, --O--, --O--Ar 3 --O--, --S--, --SO--, --SO 2 --, --SO 2 --Ar 3 --SO 2 --, --R 1 --Ar 4 --R 1 --, --O--R 1 --O--, ##STR13## --CONH--R 1 --NHCO--, or --Ar 5 --R 1 --; Ar 3 and Ar 4 are individually phenylene or bisphenylene; R 1 is an alkylene; R 2 is an alkyl, Ar 5 is a cycloalkylene; and A is selected from an alkylene, a cycloalkylene group, --R 1 --Ar 4 --R 1 --, --R 1 --Ar 5 --R 1 --, --R 1 --O--Ar 4 --O--R 1 --, or --R 1 --O--Ar 4 --X--Ar 4 --O--R 1 --; and X represents --SO 2 --, --CO--, an alkylene group, or --R 1 --Ar 4 --R 1 --.
Claim 4
Dependent Claim
204 words
An optical resin composition consisting essentially of a polycarbonate, said optical resin composition having a melt flow rate of at least 5.0 grams/10 minutes as measured based on International Standards Organization Reference 1133 Standard at 230° C. and 5 kg, said optical resin composition having a glass transition point of at least 100° C., said polycarbonate having a major repeating unit represented by Formula I or II, ##STR12## wherein Ar 1 and Ar 2 are each a cycloalkylene, R is selected from alkylene, cycloalkylene, --O--, --O--Ar 3 --O--, --S--, --SO--, --SO 2 --, --SO 2 --Ar 3 --SO 2 --, --R 1 --Ar 4 --R 1 --, --O--R 1 --O--, ##STR13## --CONH--R 1 --NHCO--, or --Ar 5 --R 1 --; Ar 3 and Ar 4 are individually phenylene or bisphenylene; R 1 is an alkylene; R 2 is an alkyl, Ar 5 is a cycloalkylene; and A is selected from an alkylene, a cycloalkylene group, --R 1 --Ar 4 --R 1 --, --R 1 --Ar 5 --R 1 --, --R 1 --O--Ar 4 --O--R 1 --, or --R 1 --O--Ar 4 --X--Ar 4 --O--R 1 --; and X represents --SO 2 --, --CO--, an alkylene group, or --R 1 --Ar 4 --R 1 --.
Claim 5
Dependent Claim
48 words
The optical element of claim 1, wherein said arylene is a phenylene or naphthylene, said cycloalkylene has 4 to 7 ring members, said alkylene is a straight or branched group having 1 to 18 carbon atoms; and said alkyl is a group having 1 to 6 carbon atoms.
Claim 6
Dependent Claim
49 words
The optical resin composition of claim 2, wherein said arylene is a phenylene or naphthylene, said cycloalkylene has 4 to 7 ring members, said alkylene is a straight or branched group having 1 to 18 carbon atoms; and said alkyl is a group having 1 to 6 carbon atoms.
Claim 7
Dependent Claim
22 words
The optical element of claim 1, wherein at least 50% by weight of said polycarbonate is represented by Formula I or II.
Claim 8
Dependent Claim
23 words
The optical resin composition of claim 2, wherein at least 50% by weight of said polycarbonate is represented by Formula I or II.
References Cited (Backward Citations)
US3554742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |