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Patent US4472546A successfully refreshed from Google Patents.
US4472546A
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Polyphenylene ether resin composition
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1983-07-05
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Granted: 1984-09-18
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Expires: 2003-07-05
Abstract
Abstract A polyphenylene ether resin composition comprising (A) a polyphenylene ether resin, (B) at least one compound selected from the group consisting of 2-(o-hydroxyphenyl)benzotriazoles represented by the following formula (I) ##STR1## wherein R 1 , R 2 , R 3 and R 4 are identical or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkoxycarbonylalkyl group, an aryl group or an aralkyl group, and X represents a halogen atom, and 2-hydroxybenzophenones represented by the following formula (II) ##STR2## wherein R 5 represents a hydrogen atom, a hydroxyl group or an alkoxy group, R 6 represents a hydrogen atom or a hydroxyl group, R 7 represents a hydrogen atom or a sulfonic acid group, and R 8 represents a hydrogen atom, an alkyl group or an aromatic acyl group, (C) an organic phosphite, and (D) a sterically hindered phenol.
Inventors
- 👤 Akitoshi Sugio
- 👤 Masanobu Masu
- 👤 Masao Okabe
- 👤 Eiji Ukita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; C08K5/04; C08K5/13; C08K5/132; C08K5/49; C08K5/51; C08K5/52; C08K5/524
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
A polyphenylene ether resin composition comprising (A) a polyphenylene ether resin, (B) at least one compound selected from the group consisting of 2-(o-hydroxyphenyl)benzotriazoles represented by the following formula (I) ##STR12## wherein R 1 , R 2 , R 3 and R 4 are identical or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group, an alkoxycarbonylalkyl group, an aryl group or an aralkyl group, and X represents a halogen atom, and 2-hydroxybenzophenones represented by the following formula (II) ##STR13## wherein R 5 represents a hydrogen atom, a hydroxyl group or an alkoxy group, R 6 represents a hydrogen atom or a hydroxyl group, R 7 represents a hydrogen atom or a sulfonic acid group, and R 8 represents a hydrogen atom, an alkyl group or an aromatic acyl group, (C) an organic phosphite, and (D) a sterically hindered phenol, the amount of each of the compound (B), the organic phosphite (C) and the sterically hindered phenol (D) being 0.01 to 5 parts by weight per 100 parts by weight of the polyphenylene ether resin.
Claim 2
Dependent Claim
190 words
A polyphenylene ether resin composition comprising (A) a polyphenylene ether resin, (B) at least one compound selected from the group consisting of 2-(o-hydroxyphenyl)benzotriazoles represented by the following formula (I) ##STR12## wherein R 1 , R 2 , R 3 and R 4 are identical or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an alkoxy group, an alkoxycarbonylalkyl group, an aryl group or an aralkyl group, and X represents a halogen atom, and 2-hydroxybenzophenones represented by the following formula (II) ##STR13## wherein R 5 represents a hydrogen atom, a hydroxyl group or an alkoxy group, R 6 represents a hydrogen atom or a hydroxyl group, R 7 represents a hydrogen atom or a sulfonic acid group, and R 8 represents a hydrogen atom, an alkyl group or an aromatic acyl group, (C) an organic phosphite, and (D) a sterically hindered phenol, the amount of each of the compound (B), the organic phosphite (C) and the sterically hindered phenol (D) being 0.01 to 5 parts by weight per 100 parts by weight of the polyphenylene ether resin.
Claim 3
Dependent Claim
42 words
The resin composition of claim 1 wherein the polyphenylene ether resin is a homopolymer of phenylene ether, a copolymer of phenylene ether, a grafted phenylene ether polymer, or a blend of any one of these polymers with another resin or an elastomer.
Claim 4
Dependent Claim
14 words
The resin composition of claim 2 wherein the other resin is a polystyrene-type resin.
Claim 5
Dependent Claim
25 words
The resin composition of claim 2 wherein the elastomer has a Young's modulus at room temperature of 10 5 to 10 9 dynes/cm 2 .
References Cited (Backward Citations)
US3326849A
Cited
US3660531A
Cited
US3959413A
Cited
US3952072A
Cited
US4283327A
Cited
US4288631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |