Patent US3763644A successfully refreshed from Google Patents.
US3763644A
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Flame retardant textiles
Assignee: Eastman Kodak Co
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Filing: 1972-05-09
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Granted: 1973-10-09
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Expires: 1992-05-09
Abstract
Abstract Disclosed are textile yarns comprising a plurality of antimonycontaining fibers and a plurality of bromine-containing fibers. The antimony-containing fibers are formed from a polymer having an antimony-containing compound dispersed therein and the bromine-containing fibers are formed from a polyester having a bromine-containing compound dispersed therein. The textile yarns of this invention exhibit an unobvious combination of commercially acceptable mechanical properties and commercially acceptable flame retardancy. Blends of the fibers used to prepare the yarn are also disclosed. Fabrics of the yarn are also disclosed.
Inventors
- 👤 W Jackson
- 👤 W Darnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:36
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/44; D02G3/443; D01; D01F; D01F1/00; D01F1/02; D01F1/07; D01F1/10; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S57/00; Y10S57/904; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T428/2933; Y10T428/2971; Y10T428/31504; Y10T428/31507; Y10T428/31786
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
43 words
The yarn of claim 1 wherein the antimony-containing and bromine-containing fibers are formed from a dicarboxylic acid component which is at least 80 mole percent terephthalic acid and a glycol component which is at least 80 mole percent ethylene glycol, 1,4-butanediol, or 1.4-cyclohexanedimethanol.
Claim 2
Dependent Claim
30 words
The yarn of claim 2 wherein the antimony-containing fibers contain from 0.5-5 weight percent of the antimony-containing compound, and the bromine-containing fibers contain 3-30 weight percent of the bromine-containing compound.
Claim 3
Dependent Claim
38 words
The yarn of claim 2 wherein the bromine-containing compound has a molecular weight of at least 2,000 and is a linear bromopolycarbonate wherein at least 50 percent of the recurring units in the polymer chain are connected by
Claim 4
Dependent Claim
16 words
The yarn of claim 4 wherein substantially 100 percent of said recurring units include the structure
Claim 5
Dependent Claim
24 words
The yarn of claim 1 wherein the bromine-containing compound is an addition polymer which comprises at least 35 mole percent units of the structure
Claim 6
Dependent Claim
93 words
A textile yarn comprising A. a plurality of antimony-containing fibers formed from poly(ethylene terephthalate) having uniformly dispersed throughout the fiber from 1 to 4 weight percent antimony trioxide, based on the weight of the antimony-containing fibers, and B. a plurality of bromine-containing fibers formed from poly(ethylene terephthalate) having uniformly dispersed throughout the fiber 5-12 weight percent of a bromine-containing compound selected from the group consisting of addition polymers having at least 95 mole percent units derived from poly(tribromoneopentyl acrylate) and linear bromopolycarbonates wherein substantially 100 percent of the recurring units include the structure
Claim 7
Dependent Claim
112 words
A fiber blend comprising A. a plurality of antimony-containing staple fibers formed from a polymer selected from the group consisting of polyesters, modacrylics, regenerated cellulose, polyamides and cellulose acetate, the fibers having uniformly dispersed throughout the fiber, based on the weight of the antimony-containing fibers, from 0.1-20 weight percent of an antimony-containing compound, and B. a plurality of bromine-containing staple fibers formed from a polyester, the fibers having uniformly dispersed throughout the fiber, based on the weight of the bromine-containing fibers, from 1-50 weight percent of a bromine-containing compound having a molecular weight of at least 500 and containing from 40-80 weight percent bromine, based on the weight of the bromine-containing compound.
Claim 8
Dependent Claim
45 words
The fiber blend of claim 8 wherein the antimony-containing and bromine-containing fibers are formed from a dicarboxylic acid component which is at least 80 mole percent terephthalic acid and a glycol component which is at least 80 mole percent ethylene glycol, tetramethylene glycol or 1,4-cyclohexanedimethanol.
Claim 9
Dependent Claim
31 words
The fiber blend of claim 9 wherein the antimony-containing fibers contain from 0.5-5 weight percent of the antimony-containing compound, and the bromine-containing fibers contain 3-30 weight percent of the bromine-containing compound.
Claim 10
Dependent Claim
39 words
The fiber blend of claim 9 wherein the bromine-containing compound has a moLecular weight of at least 2,000 and is a linear bromopolycarbonate wherein at least 50 percent of the recurring units in the polymer chain are connected by
Claim 11
Dependent Claim
25 words
The fiber blend of claim 11 wherein the bromine-containing compound is an addition polymer which comprises at least 35 mole percent units of the structure
Claim 12
Dependent Claim
17 words
The fiber blend of claim 11 wherein substantially 100 percent of said recurring units include the structure
Claim 13
Dependent Claim
93 words
A fiber blend comprising A. a plurality of antimony-containing fibers formed from poly(ethylene terephthalate) having uniformly dispersed throughout the fiber from 1 to 4 weight percent antimony trioxide, based on the weight of the antimony-containing fibers, and B. a plurality of bromine-containing fibers formed from poly(ethylene terephthalate) having uniformly dispersed throughout the fiber 5-12 weight percent of a bromine-containing compound selected from the group consisting of addition polymers having at least 95 mole percent units derived from poly(tribromoneopentyl acrylate) and linear bromopolycarbonates wherein substantially 100 percent of the recurring units include the structure
Claim 14
Dependent Claim
9 words
A textile fabric of the yarn of claim 1.
Claim 15
Dependent Claim
9 words
A textile fabric of the yarn of claim 7.
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |