Patent US4456720A successfully refreshed from Google Patents.
US4456720A
Expired / Lapsed
US
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Flame resistant non-discolored polyphenylene ether resin compositions
Assignee: General Electric Co
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Filing: 1983-08-29
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Granted: 1984-06-26
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Expires: 2003-08-29
Abstract
Abstract There is provided a novel flame retardant system or additive which when incorporated in a polymer, such as polyphenylene ether resin compositons, produces novel flame resistant non-discolored polyphenylene ether resin compositions. The flame retardant system comprises a composition of stable halogenated organic compounds and boron containing salts or esters which are stable at 250°-300° C.
Inventors
- 👤 Visvaldis Abolins
- 👤 Fred F. Holub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/55; C08K3/00; C08K3/38; C08K5/02
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
30 words
A flame retardant composition which does not discolor on molding, comprising a polyphenylene ether resin and a flame retardant amount of a stable brominated-phenoxy alkane and a boron containing ester.
Claim 2
Dependent Claim
30 words
A flame retardant composition which does not discolor on molding, comprising a polyphenylene ether resin and a flame retardant amount of a stable brominated-phenoxy alkane and a boron containing ester.
Claim 3
Dependent Claim
40 words
A flame retardant composition as defined in claim 1, which contains from about 10 to about 25 parts by weight of the boron containing salt or ester and the brominated-phenoxy alkane combined per 100 parts of the polyphenylene ether resin.
Claim 4
Dependent Claim
16 words
A flame retardant composition as defined in claim 1, in which the brominated-phenoxy alkane is 1,2-bis(tribromophenoxy)ethane.
Claim 5
Dependent Claim
17 words
A flame retardant composition as defined in claim 1, in which the boron containing ester is tri(2-phenylcyclohexyl)borate.
Claim 6
Dependent Claim
23 words
A flame retardant composition as defined in claim 1, which also contains an effective amount of a ferrocene to enhance the flame retardance.
Claim 7
Dependent Claim
115 words
A flame retardant polyphenylene ether resin composition as defined in claim 1, wherein the polyphenylene ether is of the formula: ##STR3## where Q, Q', Q" and Q"' are independently selected from the group consisting of hydrogen, halogen, hydrocarbon radicals, halohydrocarbon radicals having at least two carbon atoms between the halogen atom and the phenyl nucleus, hydrocarbonoxy radicals and halohydrocarbonoxy radicals having at least two carbon atoms between the halogen atoms and phenyl nucleus, and Q', Q" and Q"' in addition may be halogen with the proviso that Q and Q' are preferably free of a tertiary carbon atom; and n represents the total number of monomer units and is an integer of at least 50.
Claim 8
Dependent Claim
20 words
A flame retardant polyphenylene ether resin composition as defined in claim 6, wherein the polyphenylene ether resin is a poly(2,6-dialkyl-1,4-phenylene)ether.
Claim 9
Dependent Claim
19 words
A flame retardant polyphenylene ether resin composition as defined in claim 6, wherein the polyphenylene ether resin is poly(2,6-dimethyl-1,4-phenylene)ether.
Claim 10
Dependent Claim
23 words
A flame retardant polyphenylene ether resin composition as defined in claim 1, wherein the polyphenylene ether resin is in admixture with a polystyrene.
Claim 11
Dependent Claim
19 words
A flame retardant polyphenylene ether resin composition as defined in claim 1, which includes a filler or a reinforcement.
Claim 12
Dependent Claim
15 words
A molded composition free from discoloration obtained by molding the composition defined in claim 1.
Claim 13
Dependent Claim
15 words
A molded composition free from discoloration obtained by molding the composition defined in claim 8.
Claim 14
Dependent Claim
16 words
A molded composition free from discoloration obtained by molding the composition as defined in claim 9.
Claim 15
Dependent Claim
27 words
A process for preparing the composition described in claim 1 which comprises intimately mixing the polyphenylene ether resin with the flame retardant combination and blending the mixture.
Claim 16
Dependent Claim
17 words
A process as defined in claim 14 wherein the blended product is molded into any desired shape.
Claim 17
Dependent Claim
18 words
A process as defined in claim 14, in which the blend also contains a filler or a reinforcement.
Claim 18
Dependent Claim
22 words
A flame retardant composition, which comprises a polyphenylene ether resin and a flame retardant amount of a combination of 1,2-bis(tribromophenoxy)ethane and tri(2-phenylcyclohexyl)borate.
Claim 19
Dependent Claim
22 words
A flame retardant composition, which comprises a polyphenylene ether resin and a flame retardant amount of a combination of 1,2-bis(tribromophenoxy)ethane and tri(2-phenylcyclohexyl)borate.
Claim 20
Dependent Claim
14 words
A composition according to claim 17, in which the polyphenylene ether resin is poly(2,6-dimethyl-1,4-phenylene)ether.
Claim 21
Dependent Claim
14 words
A molded composition free from discoloration obtained by molding the composition of claim 17.
Claim 22
Dependent Claim
23 words
A flame retardant composition, which comprises a polyphenylene ether resin and a flame retardant amount of a combination of hexabromobiphenyl and tri(2-phenylcyclohexyl) borate.
Claim 23
Dependent Claim
23 words
A flame retardant composition, which comprises a polyphenylene ether resin and a flame retardant amount of a combination of hexabromobiphenyl and tri(2-phenylcyclohexyl) borate.
Claim 24
Dependent Claim
14 words
A composition according to claim 20, in which the polyphenylene ether resin is poly(2,6-dimethyl-1,4-phenylene)ether.
Claim 25
Dependent Claim
14 words
A molded composition free from discoloration obtained by molding the composition of claim 20.
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) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |