US5039729A
Expired / Lapsed
US
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Novel mixtures of brominated diphenyl ethanes
Assignee: Albemarle Corp
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Filing: 1990-03-05
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Granted: 1991-08-13
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Expires: 2010-03-05
Abstract
Abstract This invention relates to novel mixtures of brominated diphenyl ethanes, such mixtures containing a predominant amount of hexabromodiphenyl ethane and having an average bromine number, based upon GC area percent, of from about 6.7 to about 7.3. ABS based formulations containing such mixtures and articles made from such formulations are also a part of this invention.
Inventors
- 👤 David R. Brackenridge
- 👤 Saadat Hussain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:38
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/12; C07C25/00; C07C25/18; C07C43/00; C07C43/02; C07C43/257; C07C43/29; C08; C08K; C08K5/00; C08K5/02; C08K5/03
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
74 words
A mixture of brominated diphenyl ethanes, said mixture having an average bromine number, based upon gas chromotographic area percent, which is in the range of from about 6.8 to about 7.2 and containing hexabromodiphenyl ethane, heptabromodiphenyl ethane and octabromodiphenyl ethane, in which the hexabromodiphenyl ethane is present in an amount which is greater than or equal to the sum of the amount of heptabromodiphenyl ethane and the amount of octabromodiphenyl ethane in the mixture.
Claim 2
Dependent Claim
74 words
A mixture of brominated diphenyl ethanes, said mixture having an average bromine number, based upon gas chromotographic area percent, which is in the range of from about 6.8 to about 7.2 and containing hexabromodiphenyl ethane, heptabromodiphenyl ethane and octabromodiphenyl ethane, in which the hexabromodiphenyl ethane is present in an amount which is greater than or equal to the sum of the amount of heptabromodiphenyl ethane and the amount of octabromodiphenyl ethane in the mixture.
Claim 3
Dependent Claim
25 words
The mixture of claim 1 wherein said mixture additionally contains nonabromodiphenyl ethane and, optionally, one or more of tetrabromodiphenyl ethane, pentabromodiphenyl ethane and decabromodiphenyl ethane.
Claim 4
Dependent Claim
70 words
The mixture of claim 1 wherein said mixture contains from about zero to about 2 weight percent pentabromodiphenyl ethane, from about 34 to about 47 weight percent hexabromodiphenyl ethane, from about 11 to about 23 weight percent heptabromodiphenyl ethane, from about 15 to about 25 weight percent octabromodiphenyl ethane, from about 11 to about 17 weight percent nonabromodiphenyl ethane and from about zero to about 6 weight percent decabromodiphenyl ethane.
Claim 5
Dependent Claim
82 words
The mixture of claim 1 wherein said mixture, when subjected to gas chromatographic analyses, yields a gas chromatogram with from about zero to about 2 area percent for pentabromodiphenyl ethane, from about 40 to about 55 area percent for hexabromodiphenyl ethane, from about 12 to about 25 area percent for heptabromodiphenyl ethane, 15-25 gas chromatographic area percent octabromodiphenyl ethane from about 10 to about 15 area percent for nonabromodiphenyl ethane and from about zero to about 5 area percent for decabromodiphenyl ethane.
Claim 6
Dependent Claim
25 words
An acrylonitrile-butadiene-styrene copolymer based formulation containing, in a flame retardant amount, the mixture of claim 1 and a predominate amount of an acrylonitrile-butadiene-styrene copolymer resin.
Claim 7
Dependent Claim
17 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 5 wherein the formulation additionally contains a flame retardant synergist.
Claim 8
Dependent Claim
53 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 5 wherein the mixture is present in an amount of from about 10 to about 30 weight percent and the acrylonitrile-butadiene-styrene copolymer resin is present in an amount of from about 70 to about 90 weight percent, all based upon the total weight of the formulation.
Claim 9
Dependent Claim
26 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 7 wherein the formulation additionally contains from about 2 to about 6 weight percent of a flame retardant synergist.
Claim 10
Dependent Claim
19 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 8 wherein the flame retardant synergist is Sb 2 O 3 .
Claim 11
Dependent Claim
25 words
An acrylonitrile-butadiene-styrene copolymer based formulation containing, in a flame retardant amount, the mixture of claim 3 and a predominate amount of an acrylonitrile-butadiene-styrene copolymer resin.
Claim 12
Dependent Claim
25 words
An acrylonitrile-butadiene-styrene copolymer based formulation containing, in a flame retardant amount, the mixture of claim 4 and a predominate amount of an acrylonitrile-butadiene-styrene copolymer resin.
Claim 13
Dependent Claim
53 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 10 wherein the mixture is present in an amount of from about 10 to about 30 weight percent and the acrylonitrile-butadiene-styrene copolymer resin is present in an amount of from about 70 to about 90 weight percent, all based upon the total weight of the formulation.
Claim 14
Dependent Claim
53 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 11 wherein the mixture is present in an amount of from about 10 to about 30 weight percent and the acrylonitrile-butadiene-styrene copolymer resin is present in an amount of from about 70 to about 90 weight percent, all based upon the total weight of the formulation.
Claim 15
Dependent Claim
26 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 12 wherein the formulation additionally contains from about 2 to about 6 weight percent of a flame retardant synergist.
Claim 16
Dependent Claim
26 words
The acrylonitrile-butadiene-styrene copolymer based formulation of claim 13 wherein the formulation additionally contains from about 2 to about 6 weight percent of a flame retardant synergist.
Claim 17
Dependent Claim
12 words
An article formed from the acrylonitrile-butadiene-styrene copolymer based formulation of claim 10.
Claim 18
Dependent Claim
12 words
An article formed from the acrylonitrile-butadiene-styrene copolymer based formulation of claim 10.
Claim 19
Dependent Claim
12 words
An article formed from the acrylonitrile-butadiene-styrene copolymer based formulation of claim 11.
Claim 20
Dependent Claim
12 words
An article formed from the acrylonitrile-butadiene-styrene copolymer based formulation of claim 12.
Claim 21
Dependent Claim
12 words
An article formed from the acrylonitrile-butadiene-styrene copolymer based formulation of claim 13.
Claim 22
Dependent Claim
12 words
An article formed from the acrylonitrile-butadiene-styrene copolymer based formulation of claim 14.
Claim 23
Dependent Claim
12 words
An article formed from the acrylonitrile-butadiene-styrene copolymer based formulation of claim 15.
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) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |