Patent US3958934A successfully refreshed from Google Patents.
US3958934A
Expired / Lapsed
US
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Rapid fixation of disperse dyes on synthetic polymers
Assignee: EIDP Inc
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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 09:02
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.
References Cited (Backward Citations)
US3242218A
Cited
US3214478A
Cited
US3250807A
Cited
US3667898A
Cited
US3634014A
Cited
US3679349A
Cited
BE760243A
Cited
US3788811A
Cited
US3762872A
Cited
US3792977A
Cited
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 |