US4874808A
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Cycloolefin type random copolymer compositions and uses thereof
Assignee: Mitsui Chemicals Inc
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Filing: 1988-04-29
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Granted: 1989-10-17
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Expires: 2008-04-29
Abstract
Abstract Compositions comprising (A) cycloolefin random copolymer containing an ethylene component, and a cycloolefin component represented by the general formula [I] or [II] and having an intrinsic viscosity of 0.05-10 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) not lower than 70° C., and (B) a cycloolefin random copolymer containing an ethylene component, and a cycloolefin component represented by the general formula [I] or [II] and having an intrinsic viscosity of 0.01-5 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) of below 70° C., the weight ratio of said (A) component/(B) component ranging from 100/0.1 to 100/10. The composition is particularly useful for molding an information recording base board.
Inventors
- 👤 Syuji Minami
- 👤 Keiji Kawamoto
- 👤 Tetsuji Kasai
- 👤 Toshiaki Kuroiwa
- 👤 Akira Todo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08K5/09; C08K5/098; C08K5/13; C08K5/134; C08K5/1345; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0823; C08L65/00; G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/253; G11B7/2533; G11B7/2538; C08F; C08F210/00; C08F210/02; C08L2205/00; C08L2205/02; C08L2205/025
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A cycloolefin type random copolymer composition characterized by comprising (A) cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.05-10 dl/g as measured at 135° C., in decalin and a softening temperature (TMA) not lower than 70° C., and (B) a cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-5 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) not lower than 70° C., the weight ratio of said (A) component/(B) component ranging from 100/0.1 to 100/10. ##STR57## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
Claim 2
Dependent Claim
155 words
A cycloolefin type random copolymer composition characterized by comprising (A) cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.05-10 dl/g as measured at 135° C., in decalin and a softening temperature (TMA) not lower than 70° C., and (B) a cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-5 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) not lower than 70° C., the weight ratio of said (A) component/(B) component ranging from 100/0.1 to 100/10. ##STR57## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
Claim 3
Dependent Claim
21 words
The composition as claimed in claim 1 wherein a phenolic antioxidant and fatty ester of polyhydric alcohol are blended as stabilizers.
Claim 4
Dependent Claim
35 words
The composition as claimed in claim 2 wherein the fatty ester of polyhydric alcohol is derived from esterification of a part of alcoholic hydroxyl group of polyhydric alcohol exhibiting a valence of at least 3.
Claim 5
Dependent Claim
115 words
A cycloolefin type random copolymer composition comprising (i) a cycloolefin type random copolymer containing a ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-10 dl/g as measured at 135° C. in decalin, and (ii) a phenolic antioxidant and (iii) fatty ester of polyhydric alcohol derived from esterification of a part of the alcoholic hydroxy groups of a polyhydric alcohol exhibiting a valence of at least 3. ##STR58## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
Claim 6
Dependent Claim
115 words
A cycloolefin type random copolymer composition comprising (i) a cycloolefin type random copolymer containing a ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-10 dl/g as measured at 135° C. in decalin, and (ii) a phenolic antioxidant and (iii) fatty ester of polyhydric alcohol derived from esterification of a part of the alcoholic hydroxy groups of a polyhydric alcohol exhibiting a valence of at least 3. ##STR58## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
Claim 7
Dependent Claim
163 words
An information recording base board which has been molded from a cycloolefin type random copolymer composition comprising (A) cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.05-10 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) of not lower than 70° C., and (B) a cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-5 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) of below 70° C., the weight ratio of said (A) component/(B) component ranging from 100/0.1 to 100/10. ##STR59## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
Claim 8
Dependent Claim
163 words
An information recording base board which has been molded from a cycloolefin type random copolymer composition comprising (A) cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.05-10 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) of not lower than 70° C., and (B) a cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-5 dl/g as measured at 135° C. in decalin and a softening temperature (TMA) of below 70° C., the weight ratio of said (A) component/(B) component ranging from 100/0.1 to 100/10. ##STR59## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
Claim 9
Dependent Claim
24 words
The information recording base board as described in claim 5 wherein a phenolic antioxidant and fatty ester of polyhydric alcohol are blended as stabilizers.
Claim 10
Dependent Claim
38 words
The information recording base board as described in claim 5 wherein the fatty ester of polyhydric alcohol is derived from esterification of a part of alcoholic hydroxyl group of polyhydric alcohol exhibiting a valence of at least 3.
Claim 11
Dependent Claim
125 words
An information recording base board which has been molded from a cycloolefin type random copolymer composition comprising (i) a cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-10 dl/g as measured at 135° C. in decalin and (ii) a phenolic antioxidant and (iii) fatty ester of polyhydric alcohol derived from esterification of a part of the alcoholic hydroxy groups of a polyhydric alcohol exhibiting a valence of at least 3. ##STR60## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
Claim 12
Dependent Claim
125 words
An information recording base board which has been molded from a cycloolefin type random copolymer composition comprising (i) a cycloolefin type random copolymer containing an ethylene component, and a cycloolefin component represented by the following general formula [I] or [II] and having an intrinsic viscosity [η] of 0.01-10 dl/g as measured at 135° C. in decalin and (ii) a phenolic antioxidant and (iii) fatty ester of polyhydric alcohol derived from esterification of a part of the alcoholic hydroxy groups of a polyhydric alcohol exhibiting a valence of at least 3. ##STR60## wherein n and m are each 0 or a positive integer, l is an integer of at least 3, and R 1 to R 10 each represent hydrogen atom, halogen atom or hydrocarbon group.
References Cited (Backward Citations)
US4614778A
Cited
JPS61211315A
Cited
EP0203799A1
Cited
JPS61292601A
Cited
US4720715A
Cited
JPS62215611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |