US3997699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant substrates
Assignee: Ethyl Corp
•
Filing: 1975-04-25
•
Granted: 1976-12-14
•
Expires: 1995-04-25
Abstract
Abstract A flame resistant substrate composed of cotton and flame retardant polyester fibers having a flame retardant affixed thereto and a method for increasing the flame resistance of a substrate composed of cotton and flame retardant polyester fibers.
Inventors
- 👤 Thomas O. Sistrunk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:56
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31971; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268; Y10T442/2762; Y10T442/277
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
76 words
A flame resistant substrate comprising cotton and polyester fibers, said polyester fibers having incorporated therein tetrabromobis-phenol-A ethoxylate flame retardant, and said substrate having affixed thereto a flame retardant amount of a phosphorous-containing flame retardant compound of the formula ##STR5## where R 1 is methyl, ethyl, propyl, phenyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl; and R 4 is hydrogen, methyl, ethyl or propyl.
Claim 2
Dependent Claim
76 words
A flame resistant substrate comprising cotton and polyester fibers, said polyester fibers having incorporated therein tetrabromobis-phenol-A ethoxylate flame retardant, and said substrate having affixed thereto a flame retardant amount of a phosphorous-containing flame retardant compound of the formula ##STR5## where R 1 is methyl, ethyl, propyl, phenyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl; and R 4 is hydrogen, methyl, ethyl or propyl.
Claim 3
Dependent Claim
22 words
The substrate of claim 1 wherein said substrate contains from about 15% to about 85% by weight polyester, the remainder being cotton.
Claim 4
Dependent Claim
20 words
The substrate of claim 1 wherein said substrate contains about 35% to 75% polyester by weight, the remainder being cotton.
Claim 5
Dependent Claim
22 words
The substrate of claim 1 wherein said substrate contains from about 45% to about 65% polyester by weight, the remainder being cotton.
Claim 6
Dependent Claim
24 words
The substrate of claim 1 wherein said R 1 is an ethyl or methyl group and R 3 and R 4 are hydrogen atoms.
Claim 7
Dependent Claim
28 words
The substrate of claim 1 wherein said R 1 is a methyl group, said R 2 is oxygen and said R 3 and R 4 are hydrogen atoms.
Claim 8
Dependent Claim
27 words
The substrate of claim 1 wherein the amount of said phosphorus-containing flame retardant compound, measured as percent dry add on, is from about 2% to about 35%.
Claim 9
Dependent Claim
24 words
The substrate of claim 7 wherein a water soluble compound selected from ammonium chloride and sodium chloride is intermixed with said phosphorus-containing flame retardant.
Claim 10
Dependent Claim
13 words
The substrate of claim 8 wherein said water soluble compound is ammonium chloride.
Claim 11
Dependent Claim
27 words
The substrate of claim 9 wherein said ammonium chloride is present in an amount of up to about 150% of said phosphorus-containing flame retardant compound, by weight.
Claim 12
Dependent Claim
27 words
The substrate of claim 1 wherein the amount of said phosphorus-containing flame retardant compound, measured as percent dry add on, is from about 5% to about 20%.
Claim 13
Dependent Claim
27 words
The substrate of claim 1 wherein the amount of said phosphorus-containing flame retardant compound, measured as percent dry add on, is from about 7% to about 15%.
Claim 14
Dependent Claim
113 words
A flame resistant substrate of cotton and polyester fibers, said substrate comprising about 35% to about 75% polyester by weight, said polyester fibers having incorporated therein tetrabromobis-phenol-A ethoxylate flame retardant, the remainder being cotton, said fibers having a phosphorus-containing flame retardant compound affixed thereto, the amount of said phosphorus-containing flame retardant compound, measured as percent dry add on, being from about 2% to about 35%, said phosphorus-containing flame retardant comprising a compound of the formula ##STR6## wherein R 1 is methyl, ethyl, propyl, phenyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl, and R 4 is hydrogen, methyl, ethyl or propyl.
Claim 15
Dependent Claim
113 words
A flame resistant substrate of cotton and polyester fibers, said substrate comprising about 35% to about 75% polyester by weight, said polyester fibers having incorporated therein tetrabromobis-phenol-A ethoxylate flame retardant, the remainder being cotton, said fibers having a phosphorus-containing flame retardant compound affixed thereto, the amount of said phosphorus-containing flame retardant compound, measured as percent dry add on, being from about 2% to about 35%, said phosphorus-containing flame retardant comprising a compound of the formula ##STR6## wherein R 1 is methyl, ethyl, propyl, phenyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl, and R 4 is hydrogen, methyl, ethyl or propyl.
Claim 16
Dependent Claim
25 words
The substrate of claim 13 wherein said R 1 is an ethyl or methyl group and said R 3 and R 4 are hydrogen atoms.
Claim 17
Dependent Claim
28 words
The substrate of claim 13 wherein said R 1 is a methyl group, said R 2 is oxygen and said R 3 and R 4 are hydrogen atoms.
Claim 18
Dependent Claim
24 words
The substrate of claim 13 wherein a water soluble compound selected from ammonium chloride and sodium chloride is intermixed with said phosphorus-containing flame retardant.
Claim 19
Dependent Claim
12 words
The substrate of claim 13 wherein said water-soluble compound is ammonium chloride.
Claim 20
Independent Claim
88 words
A method for increasing the flame resistance of a substrate of cotton and polyester fibers, said polyester fibers having incorporated therein a tetrabromobis-phenol-A ethoxylate flame retardant, comprising treating said fibers with a phosphorus-containing flame retardant, said phosphorus-containing flame retardant comprising a compound of the formula ##STR7## where R 1 is methyl, ethyl, propyl, phenyl, benzyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl, and R 4 is hydrogen, methyl, ethyl or propyl, and curing the substrate.
Claim 21
Independent Claim
88 words
A method for increasing the flame resistance of a substrate of cotton and polyester fibers, said polyester fibers having incorporated therein a tetrabromobis-phenol-A ethoxylate flame retardant, comprising treating said fibers with a phosphorus-containing flame retardant, said phosphorus-containing flame retardant comprising a compound of the formula ##STR7## where R 1 is methyl, ethyl, propyl, phenyl, benzyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl, and R 4 is hydrogen, methyl, ethyl or propyl, and curing the substrate.
Claim 22
Dependent Claim
25 words
The method of claim 18 wherein said substrate is washed after curing to remove water soluble compounds selected from ammonium chloride and sodium chloride therefrom.
Claim 23
Dependent Claim
35 words
The method of claim 18 wherein said treating comprises coating said substrate with a solution comprising from about 5% by weight to about 30% by weight of said phosphorus-containing flame retardant, the remainder being water.
Claim 24
Dependent Claim
36 words
The method of claim 18 wherein said curing comprises heating said substrate to a temperature of from about 330° F to about 360° F for a period of from about 1/2 minute to about 5 minutes.
Claim 25
Dependent Claim
22 words
The substrate of claim 18 wherein said substrate contains from about 15% to about 85% by weight polyester, the remainder being cotton.
Claim 26
Dependent Claim
24 words
The substrate of claim 18 wherein said R 1 is an ethyl or methyl group and R 3 and R 4 are hydrogen atoms.
Claim 27
Dependent Claim
28 words
The substrate of claim 18 wherein said R 1 is a methyl group, said R 2 is oxygen and said R 3 and R 4 are hydrogen atoms.
Claim 28
Dependent Claim
23 words
The substrate of claim 18 wherein a water soluble compound selected from ammonium chloride and sodium chloride is intermixed with said flame retardant.
Claim 29
Dependent Claim
13 words
The substrate of claim 25 wherein said water soluble compound is ammonium chloride.
Claim 30
Dependent Claim
26 words
The substrate of claim 26 wherein said ammonium chloride is present in an amount of up to about 150% of said phosphorus-containing flame retardant, by weight.
Claim 31
Independent Claim
132 words
A method for increasing the flame resistance of a substrate of cotton and polyester fibers, said polyester fibers having incorporated therein a tetrabromobis-phenol-A ethoxylate flame retardant, said substrate comprising from about 35% to about 75% polyester by weight, the remainder being cotton, comprising treating said substrate with a solution of a phosphorus-containing flame retardant, said solution comprising from about 5% by weight to about 30% by weight of said phosphorus-containing flame retardant, the remainder being water, said phosphorus-containing flame retardant comprising a compound of the formula ##STR8## where R 1 is methyl, ethyl, propyl, phenyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl, and heating said compound to a sufficient temperature for a time sufficient to cure said flame retardant.
Claim 32
Independent Claim
132 words
A method for increasing the flame resistance of a substrate of cotton and polyester fibers, said polyester fibers having incorporated therein a tetrabromobis-phenol-A ethoxylate flame retardant, said substrate comprising from about 35% to about 75% polyester by weight, the remainder being cotton, comprising treating said substrate with a solution of a phosphorus-containing flame retardant, said solution comprising from about 5% by weight to about 30% by weight of said phosphorus-containing flame retardant, the remainder being water, said phosphorus-containing flame retardant comprising a compound of the formula ##STR8## where R 1 is methyl, ethyl, propyl, phenyl, ClCH 2 or BrCH 2 ; R 2 is oxygen or sulphur; R 3 is hydrogen, methyl, ethyl or propyl, and heating said compound to a sufficient temperature for a time sufficient to cure said flame retardant.
Claim 33
Dependent Claim
32 words
The method of claim 28 in which said phosphorus-containing flame retardant compound is further defined by said R 1 being ethyl or methyl and said R 3 and R 4 being hydrogen.
Claim 34
Dependent Claim
39 words
The method of claim 28 in which said phosphorus-containing flame retardant compound is further defined as having said R 1 being a methyl group, said R 2 being oxygen and said R 3 and R 4 being hydrogen atoms.
Claim 35
Dependent Claim
23 words
The method of claim 28 wherein a water soluble compound selected from ammonium chloride and sodium chloride is intermixed with said flame retardant.
Claim 36
Dependent Claim
13 words
The method of claim 31 wherein said water soluble compound is ammonium chloride.
Claim 37
Dependent Claim
25 words
The method of claim 31 wherein said ammonium chloride is present in an amount of up to about 150% of said flame retardant, by weight.
Claim 38
Dependent Claim
19 words
The method of claim 31 wherein said substrate is washed after curing to remove said water soluble compound therefrom.
Claim 39
Dependent Claim
29 words
The method of claim 28 wherein said temperature is from about 330° F to about 360° F and said time is from about 1/2 minute to about 5 minutes.
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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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |