US3876549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polymer compositions comprising chlorinated cycloaliphatic hydrocarbons and hydrated stannic oxide
Assignee: Arkema Inc
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Filing: 1974-04-01
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Granted: 1975-04-08
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Expires: 1994-04-01
Abstract
Abstract The combination of hydrated stannic oxide with certain cyclic chlorine-containing hydrocarbons imparts a singularly high level of flame retardancy to polyolefins. The combination is more efficient that prior art compositions containing mixtures of antimony trioxide and either chlorinated paraffin waxes or the present chlorine-containing cyclic hydrocarbons.
Inventors
- 👤 Irving Touval
- 👤 Herbert H Waddell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:33
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
SELECTING THE ORGANIC CHLORINE-CONTAINING COMPOUND FROM THE GROUP CONSISTING OF CHLORINATED CYCLOALIPHATIC HYDROCARBONS CONTAINING MORE THAN 50% BY WEIGHT OF CHLORINE, SAID HYDROCARBONS EXHIBITING A MELTING TEMPERATURE OF BETWEEN 100* AND 500*C. AND WHICH DECOMPOSE TO THE EXTENT OF BETWEEN 50 AND 100% AT TEMPERATURES BETWEEN 300* AND 500*C., AND
Claim 2
Dependent Claim
50 words
SELECTING THE ORGANIC CHLORINE-CONTAINING COMPOUND FROM THE GROUP CONSISTING OF CHLORINATED CYCLOALIPHATIC HYDROCARBONS CONTAINING MORE THAN 50% BY WEIGHT OF CHLORINE, SAID HYDROCARBONS EXHIBITING A MELTING TEMPERATURE OF BETWEEN 100* AND 500*C. AND WHICH DECOMPOSE TO THE EXTENT OF BETWEEN 50 AND 100% AT TEMPERATURES BETWEEN 300* AND 500*C., AND
Claim 3
Dependent Claim
65 words
IN AN IMPROVED FLAME RETARDING AGENT FOR POLYMERS CONTAINING AT LEAST 50% OF REPEATING UNITS DERIVED FROM OLEFINIC HYDROCARBONS CONTAINING BETWEEN 2 AND 10 CARBON ATOMS, WHEREIN THE FLAME RETARDING AGENT IS PRESENT IN AN AMOUNT BETWEEN 4 AND 25%, BASED ON THE WEIGHT OF THE POLYMER, AND CONSISTS ESSENTIALLY OF AN ORGANIC CHLORINECONTAINING COMPOUND AND A METAL OXIDE SYNERGIST, THE IMPROVEMENTS WHICH RESIDE IN
Claim 4
Dependent Claim
65 words
IN AN IMPROVED FLAME RETARDING AGENT FOR POLYMERS CONTAINING AT LEAST 50% OF REPEATING UNITS DERIVED FROM OLEFINIC HYDROCARBONS CONTAINING BETWEEN 2 AND 10 CARBON ATOMS, WHEREIN THE FLAME RETARDING AGENT IS PRESENT IN AN AMOUNT BETWEEN 4 AND 25%, BASED ON THE WEIGHT OF THE POLYMER, AND CONSISTS ESSENTIALLY OF AN ORGANIC CHLORINECONTAINING COMPOUND AND A METAL OXIDE SYNERGIST, THE IMPROVEMENTS WHICH RESIDE IN
Claim 5
Dependent Claim
29 words
SELECTING HYDRATED STANNIC OXIDE AS THE METAL OXIDE; WHEREIN THE CHLORINE-CONTAINING COMPOUND IS PRESENT IN AN AMOUNT BETWEEN 1 AND 8 TIMES THE WEIGHT OF THE HYDRATED STANNIC OXIDE.
Claim 6
Dependent Claim
29 words
SELECTING HYDRATED STANNIC OXIDE AS THE METAL OXIDE; WHEREIN THE CHLORINE-CONTAINING COMPOUND IS PRESENT IN AN AMOUNT BETWEEN 1 AND 8 TIMES THE WEIGHT OF THE HYDRATED STANNIC OXIDE.
Claim 7
Dependent Claim
16 words
The improved flame retarding agent of claim 1 wherein the olefinic hydrocarbon is ethylene or propylene.
Claim 8
Dependent Claim
37 words
The improved flame retarding agent of claim 1 wherein the organic chlorine-containing compound is selected from the group consisting of dimeric hexachlorocyclopentadiene and reaction products of hexachlorocyclopentadiene with cyclic diolefins containing between 4 and 8 carbon atoms.
Claim 9
Dependent Claim
14 words
The improved flame retarding agent of claim 3 wherein the cyclic diolefin is 1,5-cyclooctadiene.
References Cited (Backward Citations)
US1990292A
Cited
US3158588A
Cited
US3418263A
Cited
US3361487A
Cited
US3524761A
Cited
US3718584A
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |