US4151223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant fibers and filaments of linear thermoplastic polyesters containing halogenated oligomer of styrene
Assignee: BASF SE
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Filing: 1977-09-14
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Granted: 1979-04-24
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Expires: 1997-09-14
Abstract
Abstract Fibers and filaments of linear thermoplastic polyesters, containing halogen-containing flameproofing agents and synergistic agents therefor, in which the flameproofing agents are chlorinated and/or brominated oligomeric styrenes. The fibers and filaments of the invention are used for the manufacture of textiles of low flammability.
Inventors
- 👤 Rainer Neuberg
- 👤 Klaus Penzien
- 👤 Hans G. Matthies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:33
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/88; D01F6/92; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/02; C08K5/03; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
Fibers of filaments for textile uses, comprising linear, thermoplastic polyester which contains, as a flame-proofing agent, a chlorinated and/or brominated oligomer of styrene with a degree of polymerization of 3 to 20 and a synergistic agent therefor.
Claim 2
Dependent Claim
37 words
Fibers of filaments for textile uses, comprising linear, thermoplastic polyester which contains, as a flame-proofing agent, a chlorinated and/or brominated oligomer of styrene with a degree of polymerization of 3 to 20 and a synergistic agent therefor.
Claim 3
Dependent Claim
51 words
Fibers or filaments as claimed in claim 1 wherein said flameproofing agent has the formula ##STR3## where X is chlorine or bromine, R is hydrogen or an aliphatic radical, especially H or lower alkyl, n is an integer from 3 to 20 and m is an integer from 1 to 5.
Claim 4
Dependent Claim
30 words
Fibers or filaments as claimed in claim 1 wherein said flameproofing agent is brominated oligomeric styrene, and the bromine content of the fibers or filaments is from 2.0 to 20%
Claim 5
Dependent Claim
14 words
Fibers or filaments as claimed in claim 1 wherein the polyester is polyethylene terephthalate.
Claim 6
Dependent Claim
15 words
Fibers or filaments as claimed in claim 1 wherein the synergistic agent is antimony trioxide.
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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |