Patent US3956231A successfully refreshed from Google Patents.
US3956231A
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Flame and smoke retardant styrene polymer composition
Assignee: Cyprus Amax Minerals Co
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Filing: 1974-09-03
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Granted: 1976-05-11
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Expires: 1994-09-03
Abstract
Abstract A flame retardant styrenic synthetic polymer containing a flame retardant agent comprising a mixture of a molybdenum compound selected from the group consisting of molybdenum trioxide, ammonium dimolybdate, and ammonium heptamolybdate, in combination with a halogenated hydrocarbon compound selected from the group consisting of halogenated aromatic compounds, halogenated cyclic aliphatic compounds, and mixtures thereof.
Inventors
- 👤 Fred W. Moore
- 👤 Calvin J. Hallada
- 👤 Henry F. Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K13/00; C08K13/02; C08K3/10; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
A flame retardant synthetic resin composition comprising a body composed of a styrenic resin having dispersed therethrough a flame retardant agent comprising a molybdenum compound selected from the group consisting of molybdenum trioxide, ammonium dimolybdate, ammonium heptamolybdate and mixtures thereof and a halogenated hydrocrabon compound apart from said styrenic resin selected from the group consisting of halogenated aromatic compounds, halogenated cyclic aliphatic compounds and mixtures therof, said molybdenum compound present in an amount sufficient in combination with said halogenated compound to impart flame retardant and smoke suppressant characteristics to said composition, said halogenated compound present in an amount to provide sufficient halogen atoms for reaction with the molybdenum constituent to form volatile molybdenum oxohalide compounds.
Claim 2
Dependent Claim
115 words
A flame retardant synthetic resin composition comprising a body composed of a styrenic resin having dispersed therethrough a flame retardant agent comprising a molybdenum compound selected from the group consisting of molybdenum trioxide, ammonium dimolybdate, ammonium heptamolybdate and mixtures thereof and a halogenated hydrocrabon compound apart from said styrenic resin selected from the group consisting of halogenated aromatic compounds, halogenated cyclic aliphatic compounds and mixtures therof, said molybdenum compound present in an amount sufficient in combination with said halogenated compound to impart flame retardant and smoke suppressant characteristics to said composition, said halogenated compound present in an amount to provide sufficient halogen atoms for reaction with the molybdenum constituent to form volatile molybdenum oxohalide compounds.
Claim 3
Dependent Claim
40 words
The flame retardant synthetic resin composition as defined in claim 1, in which said molybdenum compound is present in an amount to provide from about 2% to about 10% molybdenum based on the total weight of said synthetic resin composition.
Claim 4
Dependent Claim
38 words
The flame retardant synthetic resin composition as defined in claim 1, in which said halogenated compound is present in an amount to provide halogen atoms relative to molybdenum atoms at an tomic ratio of at least about 3:l.
Claim 5
Dependent Claim
39 words
The flame retardant synthetic resin composition as defined in claim 1, in which said halogenated compound is present in an amount to provide halogen atoms relative to molybdenum atoms at an atomic ratio of about 3.5:1 to about 5:1.
Claim 6
Dependent Claim
24 words
The flame retardant synthetic resin composition as defined in claim 1, in which said halogenated compound contains from about 35% to about 85% bromine.
Claim 7
Dependent Claim
41 words
The flame retardant synthetic resin composition as defined in claim 1, in which said molybdenum compound is present in the form of particles distributed substantially uniformly throughout said body which are of an average particle size less than about 20 mesh.
Claim 8
Dependent Claim
39 words
The flame retardant synthetic resin composition as defined in claim 1, in which said molybdenum compound is present in the form of particles distributed throughout said body which are of an average size of less than about 10 microns.
Claim 9
Dependent Claim
18 words
The flame retardant synthetic resin composition as defined in claim 1, in which said halogenated compound comprises hexabromobiphenyl.
Claim 10
Dependent Claim
19 words
The flame retardant synthetic resin composition as defined in claim 1, in which said halogenated compound comprises decabromobiphenyl oxide.
Claim 11
Dependent Claim
35 words
The flame retardant synthetic resin composition as defined in claim 1, wherein at least a portion of said molybdenum compound is present in the form of a coating on the surfaces of an extender filler.
Claim 12
Dependent Claim
25 words
The flame retardant synthetic resin composition as defined in claim 10, in which the coated said filler contains from about 1% to about 20% molybdenum.
Claim 13
Dependent Claim
25 words
The flame retardant synthetic resin composition as defined in claim 10, in which the coated said filler contains from about 5% to about 10% molybdenum.
Claim 14
Dependent Claim
20 words
The flame retardant synthetic resin composition as defined in claim 10, in which said extender filler comprises finely-particulated hydrated alumina.
References Cited (Backward Citations)
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US3870679A
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US3825520A
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US3900441A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |