US4683255A
Expired / Lapsed
US
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Polyphenylene ether resin composition having excellent fire retardancy
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1986-02-25
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Granted: 1987-07-28
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Expires: 2006-02-25
Abstract
Abstract A polyphenylene ether resin composition having excellent fire retardancy comprising (A) a polyphenylene ether resin, and (B) at least one phosphate compound selected from the group consisting of biphenyl phosphate compounds and naphthyl phosphate compounds.
Inventors
- 👤 Akitoshi Sugio
- 👤 Masao Okabe
- 👤 Akikazu Amagai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:10
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/523; Y; Y10; Y10S; Y10S525/00; Y10S525/905
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A polyphenylene ether resin composition having excellent first retardancy comprising (A) a polyphenylene ether resin, and (B) at least one phosphate compound selected from the group consisting of biphenylyl phosphate compounds represented by the following formula ##STR16## wherein x is 1 or 2, and R 11 represents a linear or branched alkyl group having 1 to 8 carbon atoms or a phenyl group, provided that the biphenyl group and phenyl group may each be substituted by an alkyl group having 1 to 3 carbon atoms, and naphthyl phosphate compounds represented by the following formula ##STR17## wherein y is 1 or 2, and R 22 represents a linear or branched alkyl group having 1 to 8 carbon atoms or a phenyl group, provided that the naphthyl group and phenyl group may each be substituted by an alkyl group having 1 to 3 carbon atoms.
Claim 2
Dependent Claim
143 words
A polyphenylene ether resin composition having excellent first retardancy comprising (A) a polyphenylene ether resin, and (B) at least one phosphate compound selected from the group consisting of biphenylyl phosphate compounds represented by the following formula ##STR16## wherein x is 1 or 2, and R 11 represents a linear or branched alkyl group having 1 to 8 carbon atoms or a phenyl group, provided that the biphenyl group and phenyl group may each be substituted by an alkyl group having 1 to 3 carbon atoms, and naphthyl phosphate compounds represented by the following formula ##STR17## wherein y is 1 or 2, and R 22 represents a linear or branched alkyl group having 1 to 8 carbon atoms or a phenyl group, provided that the naphthyl group and phenyl group may each be substituted by an alkyl group having 1 to 3 carbon atoms.
Claim 3
Dependent Claim
14 words
The polyphenylene ether resin composition of claim 1 which further contains a polystyrene resin.
Claim 4
Dependent Claim
67 words
The polyphenylene ether resin composition of claim 1 wherein the polyphenylene ether resin is a homopolymer or a copolymer of a monocyclic phenol represented by the following formula ##STR18## wherein R 1 represents an alkyl group having 1 to 3 carbon atoms, and R 2 and R 3 , independently from each other, represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
Claim 5
Dependent Claim
65 words
The polyphenylene ether resin composition of claim 2 wherein the polystyrene resin is a resin containing at least 25% by weight of recurring structural units represented by the following general formula ##STR19## wherein R 4 represents a hydrogen atom or a lower alkyl group, Z represents a halogen atom or a lower alkyl group, and p is zero or an integer of 1 to 3.
Claim 6
Dependent Claim
22 words
The polyphenylene ether resin composition of claim 1 where in the amount of the phosphate compound is 1 to 50% by weight.
Claim 7
Dependent Claim
21 words
The polyphenylene ether resin composition of claim 2 wherein the amount of the phosphate compound is 1 to 50% by weight.
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) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |