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US4294944A Expired / Lapsed US ⏱️ 0.0 years remaining

Flame retardant antistatic additives and antistatic fibers

Assignee: BASF Corp
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Filing: 1979-11-13
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Granted: 1981-10-13
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Expires: 1999-11-13
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Abstract

Abstract Flame-retardant antistatic polymer additives are provided which inhibit the buildup of electrostatic charges upon the addition of such compositions to synthetic polymeric fibers, i.e., polyamide fibers, and at the same time do not contribute to the flammability characteristics of such polymeric fibers. The flame-retardant antistatic polymer compositions are useful in combinations with fibers such as polyamide, polyester, polyurea, polyurethane, polysulfonamide, polyolefin and polyacrylic fibers. The antistatic effect is obtained by the process of coating the fibers or dispersing in or on the fibers up to about 12 percent by weight of a polymer composition which is the reaction product of: (a) a polyoxyalkylene compound or polyester thereof and (b) at least one reactant selected from the group consisting of (1) a diol, (2) a polyester and (3) an aliphatic or aromatic diacid or derivative of (3), wherein at least one said reactant is halogenated. Improved flame-retardant properties can be obtained by including with the flame-retardant, antistatic polymer composition an effective flame retardant proportion of a compound from group Vb of the periodic table. Generally about 1:4 to about 4:1 parts halogen to antimony compound is used. Such compounds are oxides of metals such as phosphorus, arsenic, antimony, or bismuth with the preferred compound being antimony trioxide.

Inventors

  • 👤 David D. Newkirk
  • 👤 Robert B. Login
  • 👤 Basil Thir

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 04:52
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/47; D06M11/68; D06M15/00; D06M15/19; D06M15/37; D06M15/507; D06M15/53; Y; Y10; Y10S; Y10S524/00; Y10S524/91; Y10S524/911; Y10S525/00; Y10S525/927; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 55 words
A flame-retardant, antistatic synthetic polymeric fiber which is the product of the process of dispersing in said fiber about 1 percent to about 12 percent by weight of a polymer composition which is the reaction product of a polyoxyalkylene compound with a halogenated aliphatic or aromatic diacid, anhydride or acid halide thereof or a diol.
Claim 2
Dependent Claim 55 words
A flame-retardant, antistatic synthetic polymeric fiber which is the product of the process of dispersing in said fiber about 1 percent to about 12 percent by weight of a polymer composition which is the reaction product of a polyoxyalkylene compound with a halogenated aliphatic or aromatic diacid, anhydride or acid halide thereof or a diol.
Claim 3
Dependent Claim 14 words
The flame-retardant antistatic fiber of claim 1 wherein said fiber is a polyamide fiber.
Claim 4
Dependent Claim 30 words
The composition of claim 1 wherein said polymer is dispersed in said fiber by incorporating said polymer as a polymer additive in a polymer melt prior to melt-spinning said fibers.
Claim 5
Dependent Claim 55 words
The composition of claim 1 wherein said polyoxyalkylene compound is a conjugated polyoxyalkylene compound having as a nucleus a nitrogen containing reactive hydrogen compound wherein said nitrogen compound has up to 6 carbon atoms per molecule and is selected from the group consisting of ammonia, primary alkyl amines, alkylene polyamines, alkanolamines, and hetrocyclic nitrogen compounds.
Claim 6
Dependent Claim 24 words
The composition of claim 4 wherein said conjugated polyoxyalkylene compound is a chain extended tetrol based upon a diamine wherein said diamine is ethylenediamine.
Claim 7
Dependent Claim 15 words
The composition of claim 5 wherein said halogenated diol is an alkoxylated brominated bisphenol A.
Claim 8
Dependent Claim 21 words
The composition of claim 6 wherein said halogenated diol is the reaction product of tetrabromobisphenol A, propylene oxide and ethylene oxide.

References Cited (Backward Citations)

FR2151035A1 Cited
US4029694A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-10-12 1985-04-13 1985-10-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-10-12 1989-04-13 1989-10-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-10-12 1993-04-13 1993-10-13 $7700.00 Window Closed / Lapsed

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