US3920459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproof compositions
Assignee: Fort James Corp
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Filing: 1974-09-09
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Granted: 1975-11-18
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Expires: 1994-09-09
Abstract
Abstract Paper made from a blend of synthetic polymer fibers and cellulosic fibers can be made flameproof by incorporating into the polymer a conventional flame retardant system consisting of organically-bonded chlorine or bromine and a synergist, such as antimony oxide, and, in addition, by applying to the paper a sizing containing the same or a different synergist.
Inventors
- 👤 Barrington T Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/20; D21H5/202; C; C09; C09K; C09K21/00; C09K21/06; C09K21/08; D01; D01F; D01F1/00; D01F1/02; D01F1/07; D21H11/00; D21H13/00; D21H13/10; D21H13/12; D21H13/14; D21H17/00; D21H17/03; D21H17/05; D21H17/10; D21H17/11; D21H17/63; D21H17/67; D21H17/675; D21H21/00; D21H21/14; D21H21/34; D21H5/0002; Y; Y10; Y10T; Y10T428/00; Y10T428/27
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
129 words
A FLAMEPROOF COMPOSITION OF SYNTHETIC, ORGANIC POLYMER FIBERS AND INHERENTLY FLAMMABLE MATERIAL IN A WEIGHT RATIO OF FROM ABOUT 1:9 TO ABOUT 4:1, THE POLYMER FIBERS CONTAINING FROM ABOUT 10% TO 75% BY WEIGHT OF A FLAME RETARDANT SYSTEM COMPRISING ORGANICALLY-BONDED CHLORINE OR BROMINE ATOMS AND A FIRST ADDITIVE WHICH ACTS SYNERGISTICALLY WITH THE CHLORINE OR BROMINE ATOMS IN PROVIDING FLAME RETARDANCY, THE WEIGHT RATIO OF THE HALOGEN ATOMS TO THE SYNERGISTICALLY-ACTING COMPOUND BEING FROM ABOUT 1:1 TO ABOUT 7:1, AND THE COMPOSITION HAVING DEPOSITED ON THE SURFACE THEREOF A SECOND ADDITIVE WHICH ACTS SYNERGISTICALLY WITH THE CHO LORINE OR BROMINE ATOMS IN PROVIDING FLAME RETARDANCY, THE SECOND ADDITIVE BEING PRESENT IN AN AMOUNT OF FROM ABOUT 0.1% TO 20% BY WEIGHT BASED ON THE WEIGHT OF THE COMPOSITION.
Claim 2
Dependent Claim
129 words
A FLAMEPROOF COMPOSITION OF SYNTHETIC, ORGANIC POLYMER FIBERS AND INHERENTLY FLAMMABLE MATERIAL IN A WEIGHT RATIO OF FROM ABOUT 1:9 TO ABOUT 4:1, THE POLYMER FIBERS CONTAINING FROM ABOUT 10% TO 75% BY WEIGHT OF A FLAME RETARDANT SYSTEM COMPRISING ORGANICALLY-BONDED CHLORINE OR BROMINE ATOMS AND A FIRST ADDITIVE WHICH ACTS SYNERGISTICALLY WITH THE CHLORINE OR BROMINE ATOMS IN PROVIDING FLAME RETARDANCY, THE WEIGHT RATIO OF THE HALOGEN ATOMS TO THE SYNERGISTICALLY-ACTING COMPOUND BEING FROM ABOUT 1:1 TO ABOUT 7:1, AND THE COMPOSITION HAVING DEPOSITED ON THE SURFACE THEREOF A SECOND ADDITIVE WHICH ACTS SYNERGISTICALLY WITH THE CHO LORINE OR BROMINE ATOMS IN PROVIDING FLAME RETARDANCY, THE SECOND ADDITIVE BEING PRESENT IN AN AMOUNT OF FROM ABOUT 0.1% TO 20% BY WEIGHT BASED ON THE WEIGHT OF THE COMPOSITION.
Claim 3
Dependent Claim
12 words
The composition of claim 1 in which the polymer is a polyolefin.
Claim 4
Dependent Claim
22 words
The composition of claim 1 in which the second additive is selected from the group consisting of antimony oxide and ammonium phosphate.
Claim 5
Dependent Claim
24 words
The composition of claim 1 in which the first additive is selected from the group consisting of antimony oxide and esters of phosphoric acid.
Claim 6
Dependent Claim
21 words
The composition of claim 1 in which the halogen atoms are bound to an organic compound physically blended with the polymer.
Claim 7
Dependent Claim
21 words
The composition of claim 5 in which the organic compound is a chlorinated paraffin or a halogenated ester of phosphoric acid.
Claim 8
Dependent Claim
14 words
The composition of claim 1 in which the inherently flammable material is cellulose fibers.
Claim 9
Dependent Claim
22 words
The composition of claim 7 in which the weight ratio of polymer fibers to cellulose fibers is from about 1:4 to 1:1.
Claim 10
Dependent Claim
11 words
The composition of claim 1 in which the polymer is polyethylene.
Claim 11
Dependent Claim
22 words
The composition of claim 1 wherein the composition is paper having a basis weight of from about 60 to 2000 grams/square meter.
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) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |