US3892667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel flame retardant compositions
Assignee: Arkema Inc
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Filing: 1973-10-15
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Granted: 1975-07-01
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Expires: 1993-10-15
Abstract
Abstract Sodium antimonate particles wherein 40% or more of the particles are less than 1 micron in diameter and the range of particle diameters is between 0.1 to 8 microns impart an enhanced degree of flame retardancy to synthetic organic polymer compositions containing a halogen source. The flame retardancy is further improved if any alkaline impurities are removed by treating the particles with acidic reagents as required until the aqueous phase of a slurry prepared using distilled water and containing 10% by weight of the particles exhibits a pH of between 6.8 and 7.
Inventors
- 👤 Irving Touval
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:36
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K5/00; C08K5/02; C08L; C08L101/00; C08L101/02; C08L101/04; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/26; C08L23/28; C08L91/00; C08L91/06; C08L2201/00; C08L2201/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
IN AN IMPROVED FLAME-RETARDING COMPOSITION FOR USE WITH SYNTHETIC ORGANIC POLYMES, SUCH COMPOSITION CONSISTING ESSENTIALLY OF PARTICULATE SODIUM ANTIMONATE AND AN ORGANI CHLORINE- OR BROMINE-CONTAINING COMPOUND EQUIVALENT TO BETWEEN 50 AND 400% OF CHLORINE OR BROMINE BASED ON THE WEIGHT OF THE SODIUM ANTIMONATE, WHEREIN THE IMPROVEMENT RWSIDES IN THE PRESENCE OF SAID SODIUM ANTIMONATE AS PARTICLES, SUBSTANTIALLY ALL OF WHICH ARE BETWEEN 0.1 AND 8 MICRONS IN DIAMETEW AND AT LEAST 40% OF WHICH ARE SMALLER THAN 1 MICRON.
Claim 2
Dependent Claim
80 words
IN AN IMPROVED FLAME-RETARDING COMPOSITION FOR USE WITH SYNTHETIC ORGANIC POLYMES, SUCH COMPOSITION CONSISTING ESSENTIALLY OF PARTICULATE SODIUM ANTIMONATE AND AN ORGANI CHLORINE- OR BROMINE-CONTAINING COMPOUND EQUIVALENT TO BETWEEN 50 AND 400% OF CHLORINE OR BROMINE BASED ON THE WEIGHT OF THE SODIUM ANTIMONATE, WHEREIN THE IMPROVEMENT RWSIDES IN THE PRESENCE OF SAID SODIUM ANTIMONATE AS PARTICLES, SUBSTANTIALLY ALL OF WHICH ARE BETWEEN 0.1 AND 8 MICRONS IN DIAMETEW AND AT LEAST 40% OF WHICH ARE SMALLER THAN 1 MICRON.
Claim 3
Dependent Claim
39 words
The improved flame retarding composition of claim 1 wherein the aqueous phase of a mixture containing water and 10%, based on the weight of said mixture, of said particulate sodium antimonate exhibits a pH of between 6.8 and 7.0.
Claim 4
Dependent Claim
27 words
The improved composition of claim 1 wherein the organic chlorine- or bromine-containing compound is selected from the group consisting of chlorinated paraffin waxes and vinyl chloride polymers.
References Cited (Backward Citations)
US3715310A
Cited
US3705209A
Cited
US3752837A
Cited
US3770557A
Cited
US3783016A
Cited
US3723139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |