Patent US5674437A successfully refreshed from Google Patents.
US5674437A
Expired / Lapsed
US
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Method of providing luminescence to fibrous materials
Assignee: Glotex Corp
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Filing: 1996-02-28
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Granted: 1997-10-07
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Expires: 2016-02-28
Abstract
Abstract A method for providing luminescence to fibrous material is provided. The method includes combining a metal aluminate oxide pigment with a thermoplastic polymer, and then heating, mixing, and extruding the combination into a fiber. A luminescent fiber comprising a thermoplastic polymer and metal aluminate oxide pigment, and articles of manufacture comprising such fibers are also provided.
Inventors
- 👤 Richard H. Geisel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:30
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/04; D01F6/06; D01F1/00; D01F1/02; D01F1/04
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
73 words
A method of providing luminescence to a fiber comprising the steps of: combining in an extruder a thermoplastic polymer with a metal aluminate oxide pigment, the pigment being added in an amount sufficient to provide luminescence to the polymer after exposure to a light source; heating and mixing the combination of thermoplastic polymer and pigment at a temperature sufficient to melt the thermoplastic polymer; and extruding the melted combination to form a fiber.
Claim 2
Independent Claim
73 words
A method of providing luminescence to a fiber comprising the steps of: combining in an extruder a thermoplastic polymer with a metal aluminate oxide pigment, the pigment being added in an amount sufficient to provide luminescence to the polymer after exposure to a light source; heating and mixing the combination of thermoplastic polymer and pigment at a temperature sufficient to melt the thermoplastic polymer; and extruding the melted combination to form a fiber.
Claim 3
Dependent Claim
23 words
A method according to claim 1, wherein said extrusion step comprises simultaneously melt spinning a plurality of fiber to form a spun yarn.
Claim 4
Dependent Claim
15 words
A method according to claim 2, wherein the yarn is a bulked continuous fiber yarn.
Claim 5
Dependent Claim
63 words
A method according to claim 1, wherein said combining step further comprises adding an additional additive to the thermoplastic polymer and pigment, the additional additive selected from the group consisting of plasticizers, softeners, levelling agents, water repellents, anti-foaming agents, oil-repellant resins, softeners, IR absorbers, antistatic agents, bactericides, fungicides, anti-viral agents, phosphites, acid neutralizers, hindered amine light stabilizers, antioxidants, and luminescent and non-luminescent pigments.
Claim 6
Dependent Claim
40 words
A method according to claim 1 wherein the thermoplastic polymer is selected from the group consisting of polypropylene, aliphatic polyamides, polyesters, polymethacrylics, polyacrylates, polycarbonates, polycyanoethylenes, polyacrylonitrides, polyvinyl chloride, polyethylene, polystyrene, polyurethane, acrylate resins, halogenated polymers, and mixtures and blends thereof.
Claim 7
Dependent Claim
12 words
A method according to claim 1 wherein the thermoplastic polymer is polypropylene.
Claim 8
Dependent Claim
13 words
A method according to claim 6 wherein the polypropylene is in pellet form.
Claim 9
Dependent Claim
17 words
A method according to claim 1 wherein the fiber is coated with a coating agent after extrusion.
Claim 10
Dependent Claim
21 words
A method according to claim 1 wherein the percentage by weight of metal aluminate oxide pigment is from 0.05% to 5%.
Claim 11
Dependent Claim
21 words
A method according to claim 1 wherein the percentage by weight of metal aluminate oxide pigment is from 0.1% to 0.5%.
Claim 12
Dependent Claim
23 words
A method according to claim 1, wherein the mean particle size of the metal aluminate oxide pigment is from 12 to 21 microns.
Claim 13
Independent Claim
85 words
A method of providing luminescence to a fiber comprising the steps of: combining in an extruder a thermoplastic polymer and a plasticizer with metal aluminate oxide pigment, the pigment comprising 0.05% to 5% of the total combination by weight; heating and mixing the combination of thermoplastic polymer, pigment and plasticizer at a temperature sufficient to melt the thermoplastic polymer; extruding the melted combination to form a fiber, the fiber having a denier from about 0.1 to 250; and coating the fiber with a coating agent.
Claim 14
Independent Claim
85 words
A method of providing luminescence to a fiber comprising the steps of: combining in an extruder a thermoplastic polymer and a plasticizer with metal aluminate oxide pigment, the pigment comprising 0.05% to 5% of the total combination by weight; heating and mixing the combination of thermoplastic polymer, pigment and plasticizer at a temperature sufficient to melt the thermoplastic polymer; extruding the melted combination to form a fiber, the fiber having a denier from about 0.1 to 250; and coating the fiber with a coating agent.
Claim 15
Dependent Claim
23 words
A method according to claim 12, wherein said extrusion step comprises simultaneously melt spinning a plurality of fiber to form a spun yarn.
Claim 16
Dependent Claim
15 words
A method according to claim 13, wherein the yarn is a bulked continuous fiber yarn.
Claim 17
Dependent Claim
63 words
A method according to claim 12, wherein said combining step further comprises adding an additional additive to the thermoplastic polymer and pigment, the additional additive selected from the group consisting of plasticizers, softeners, levelling agents, water repellents, anti-foaming agents, oil-repellant resins, softeners, IR absorbers, antistatic agents, bactericides, fungicides, anti-viral agents, phosphites, acid neutralizers, hindered amine light stabilizers, antioxidants, and luminescent and non-luminescent pigments.
Claim 18
Dependent Claim
40 words
A method according to claim 12 wherein the thermoplastic polymer is selected from the group consisting of polypropylene, aliphatic polyamides, polyesters, polymethacrylics, polyacrylates, polycarbonates, polycyanoethylenes, polyacrylonitrides, polyvinyl chloride, polyethylene, polystyrene, polyurethane, acrylate resins, halogenated polymers, and mixtures and blends thereof.
Claim 19
Dependent Claim
12 words
A method according to claim 12 wherein the thermoplastic polymer is polypropylene.
Claim 20
Dependent Claim
13 words
A method according to claim 17 wherein the polypropylene is in pellet form.
Claim 21
Dependent Claim
42 words
A method according to claim 12 wherein the coating agent is selected from the group consisting of silica, polyalkylene glycols, polyalkylene glycol esters, polyalkylene glycol alcohols, quartenary amines, alcohol phosphate salts, long chain fatty acid esters, and long chain fatty alcohol esters.
Claim 22
Dependent Claim
21 words
A method according to claim 12 wherein the percentage by weight of metal aluminate oxide pigment is from 0.1% to 0.5%.
Claim 23
Dependent Claim
23 words
A method according to claim 12 wherein the mean particle size of the metal aluminate oxide pigment is from 12 to 21 microns.
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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) | 2000-10-06 | 2001-04-07 | 2001-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-06 | 2005-04-07 | 2005-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-06 | 2009-04-07 | 2009-10-07 | $7700.00 | Window Closed / Lapsed |