US3958934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid fixation of disperse dyes on synthetic polymers
Assignee: EIDP Inc
•
Filing: 1974-07-05
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Granted: 1976-05-25
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Expires: 1994-07-05
Abstract
Abstract Process wherein an organic disperse dye is applied, for example, to a synthetic organic polymer in the form of a film or textile fabric, for example, a polyethylene terephthalate fabric, by printing, spraying or padding and the dye-containing film or fabric is then passed through a fluorocarbon fluid at atmospheric pressure and at a temperature greater than the glass transition temperature of the polymer, said fluorocarbon having a boiling temperature of at least 125°C., a fluorine to carbon atom ratio of at least 1.5 and a solubility parameter of not greater than 7.0, preferably 6.5 or less, for example, a fluorocarbon of the formula F[CF(CF 3 )CF 2 O] n CHFCF 3 wherein n is at least 3.
Inventors
- 👤 Harold Leonard Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:24
CPC Classifications
D; D06; D06B; D06B19/00; D06B19/0005; D06B19/0064; D06P; D06P1/00; D06P1/16; D06P1/44; D06P1/60; D06P1/613; D06P1/90; D06P5/00; D06P5/02; D06P5/04; D06P5/20; D06P5/2066; D06P5/2077; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
Process wherein an organic disperse dye is applied to a synthetic organic polymer in the form of a film or textile fabric by spraying, printing or padding and the dye-containing film or fabric is then passed through a fluorocarbon fluid at a temperature greater than the glass transition temperature of the polymer for sufficient time to fix the dye in the polymer, said fluorocarbon having a boiling temperature of at least 125°C. and having a fluorine to carbon atom ratio of at least 1.5 and a solubility parameter of not greater than 7.0.
Claim 2
Dependent Claim
93 words
Process wherein an organic disperse dye is applied to a synthetic organic polymer in the form of a film or textile fabric by spraying, printing or padding and the dye-containing film or fabric is then passed through a fluorocarbon fluid at a temperature greater than the glass transition temperature of the polymer for sufficient time to fix the dye in the polymer, said fluorocarbon having a boiling temperature of at least 125°C. and having a fluorine to carbon atom ratio of at least 1.5 and a solubility parameter of not greater than 7.0.
Claim 3
Dependent Claim
10 words
Process of claim 1 wherein the polymer is a nylon.
Claim 4
Dependent Claim
10 words
Process of claim 1 wherein the polymer is a polyester.
Claim 5
Dependent Claim
11 words
Process of claim 3 wherein the polyester is a polyethylene terephthalate.
Claim 6
Dependent Claim
12 words
process of claim 1 wherein the solubility parameter is less than 6.5.
Claim 7
Dependent Claim
16 words
Process of claim 5 wherein the fluorocarbon is a perfluoroalkane of 9 to 16 carbon atoms.
Claim 8
Dependent Claim
27 words
Process of claim 5 wherein the fluorocarbon is of the formula F[CF(CF 3 )CF 2 O] m CF 2 CF 3 wherein m is at least 4.
Claim 9
Dependent Claim
25 words
Process of claim 5 wherein the fluorocarbon is of the formula F[CF(CF 3 )CF 2 O] n CHFCF 3 wherein n is at least 3.
Claim 10
Dependent Claim
8 words
Process of claim 8 wherein n is 3-7.
Claim 11
Dependent Claim
9 words
Process of claim 5 wherein the fluorocarbon is perfluorotributylamine.
Claim 12
Dependent Claim
9 words
Process of claim 1 which is carried out continuously.
Claim 13
Dependent Claim
19 words
Process of claim 1 wherein the dye-treated film or fabric is dried before being passed through the fluorocarbon fluid.
Claim 14
Dependent Claim
13 words
Process of claim 1 wherein the dyed film or fabric is heat set.
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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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |