US3692867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament comprising a polymer blend of polyester and polyanide containing an organic phosphorus compound
Assignee: Honeywell International Inc
•
Filing: 1971-03-10
•
Granted: 1972-09-19
•
Expires: 1991-03-10
Abstract
Abstract A process for increasing the whiteness of a filament extruded from a polymer blend comprised of polyester and polyamide which comprises incorporating in the polymer blend prior to extrusion thereof a small amount of an organic phosphorus compound which can be an organic phosphite, phosphinate, phosphate, polymeric phosphite, polymeric phosphate, the corresponding acid, or mixtures thereof.
Inventors
- 👤 Richard E Mayer
- 👤 Amnon Birenzvige
- 👤 Gene C Weedon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:44
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L77/00; C08L77/02; Y; Y10; Y10S; Y10S525/00; Y10S525/935
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
17 words
The process of claim 1 wherein the filament comprises a polyamide matrix having polyester microfibers dispersed therein.
Claim 2
Dependent Claim
12 words
The process of claim 2 wherein the phosphorus compound is triphenyl phosphite.
Claim 3
Dependent Claim
12 words
The process of claim 2 wherein the phosphorus compound is tris(4-nonyl)phenyl phosphite.
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein the phosphorus compound is disodium phenyl phosphinate.
Claim 5
Dependent Claim
12 words
The process of claim 2 wherein the phosphorus compound is triphenyl phosphate.
Claim 6
Dependent Claim
13 words
The process of claim 2 wherein the phosphorus compound is poly(ethylene butyl phosphite).
Claim 7
Dependent Claim
13 words
The process of claim 2 wherein the phosphorus compound is poly(ethylene phenyl phosphate).
Claim 8
Dependent Claim
32 words
The process of claim 2 wherein the amount of phosphorus compound incorporated into the polymer blend is about 0.1 to 1.0 weight percent based upon the weight of the polyamide and polyester.
Claim 9
Dependent Claim
11 words
The process of claim 2 wherein the polyamide is nylon 6.
Claim 10
Dependent Claim
11 words
The process of claim 2 wherein the polyester is polyethylene terephthalate.
Claim 11
Dependent Claim
17 words
The process of claim 2 wherein the phosphorus compound is dry blended with polyamide and polyester granules.
Claim 12
Dependent Claim
21 words
The process of claim 2 wherein the phosphorus compound is incorporated into a molten polymer blend comprised of polyester and polyamide.
Claim 13
Dependent Claim
21 words
The process of claim 2 wherein the phosphorus compound is incorporated into one of said polymers during polymerization of said polymer.
Claim 14
Dependent Claim
60 words
A filament comprising a polymer blend of about 50 to 10 parts of polyester and about 50 to 90 parts of polyamide per 100 parts by weight total polyamide and polyester, containing about 0.1 to 5.0 weight percent based upon the weight of the polyamide and polyester of an organic phosphorus compound selected from the group having the general formulas:
Claim 15
Dependent Claim
18 words
The filament of claim 15 wherein the polymer blend comprises a polyamide matrix having polyester microfibers dispersed therein.
Claim 16
Dependent Claim
12 words
The filament of claim 16 wherein the phosphorus compound is triphenyl phosphite.
Claim 17
Dependent Claim
12 words
The filament of claim 16 wherein the phosphorus compound is tris(4-nonyl)phenyl phosphite.
Claim 18
Dependent Claim
13 words
The filament of claim 16 wherein the phosphorus compound is disodium phenyl phosphinate.
Claim 19
Dependent Claim
12 words
The filament of claim 16 wherein the phosphorus compound is triphenyl phosphate.
Claim 20
Dependent Claim
13 words
The filament of claim 16 wherein the phosphorus compound is poly(ethylene butyl phosphite).
Claim 21
Dependent Claim
13 words
The filament of claim 16 wherein the phosphorus compound is poly(ethylene phenyl phosphate).
Claim 22
Dependent Claim
31 words
The filament of claim 16 wherein the amount of phosphorus compound contained in said filament is about 0.1 to 1.0 weight percent based upon the weight of the polyamide and polyester.
Claim 23
Dependent Claim
11 words
The filament of claim 16 wherein the polyamide is nylon 6.
Claim 24
Dependent Claim
11 words
The filament of claim 16 wherein the polyester is polyethylene terephthalate.
Claim 25
Dependent Claim
103 words
A process for increasing the whiteness of a filament extruded from a polymer blend comprised of about 50 to 10 parts of polyethylene terephthalate and about 50 to 90 parts of polycaproamide per 100 parts by weight total polycaproamide and polyethylene terephthalate, wherein said filament comprises a polycaproamide matrix having polyethylene terephthalate microfibers dispersed therein which comprises incorporating in the polymer blend prior to extrusion thereof about 0.1 to 5.0 weight percent, based on the weight of the polycaproamide and polyethylene terephthalate, of an organic phosphorus compound selected from the group consisting of triphenyl phosphite, tris(4-nonyl)-phenyl phosphite, disodium phenyl phosphinate and triphenyl phosphate.
Claim 26
Dependent Claim
13 words
The process of claim 26 wherein the organic phosphorus compound is triphenyl phosphite.
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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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |