US5019515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling and optimizing industrial processes for the manufacture of textile finishing and improving agents via flow injection analysis
Assignee: Novartis Corp
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Filing: 1988-08-23
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Granted: 1991-05-28
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Expires: 2008-08-23
Abstract
Abstract A method of on-line controlling and optimizing industrial chemical processes for the manufacture of textile finishing and improving agents to achieve an optimum end point, wherein the improvement comprises the steps of periodic automatic sample taking, over at least the critical state of the process, injecting the samples into a carrier stream, optionally physically and/or chemically manipulating the samples while in the carrier stream, and then transporting the carrier stream to a detector wherein one or more values are measured, said values being used to adjust the process to an optimum end point. The method not only makes possible to determine and monitor the instantaneous state of the process but also, because of the amount of relevant data per unit of time resulting from the method, to drive the process to a desired quality by using the data obtained from the detector for further process control. Each new analysis affords a prognosis on the further reaction course and on the end point of reaction.
Inventors
- 👤 Markus Gisin
- 👤 Christian Thommen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:19
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/08; G01N35/085; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/004; G01N33/00; G01N33/36; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/135; G05D11/138; Y; Y10; Y10T; Y10T436/00; Y10T436/11; Y10T436/117497; Y10T436/118339; Y10T436/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
92 words
A method on on-line controlling and optimizing processes for the manufacture of textile finishing and improving agents and their intermediates which comprises the steps of (a) automatically sampling, over at least a last portion of the processes, (b) injecting samples from step (a) into a carrier stream, and then (c) transporting the carrier stream to a spectrophotometric detector, (d) spectrophotometrically measuring at least one characteristic of the samples, (e) controlling the process to an optimum end point based on at least one of said characteristics, and (f) repeating steps (a) through (e).
Claim 2
Independent Claim
92 words
A method on on-line controlling and optimizing processes for the manufacture of textile finishing and improving agents and their intermediates which comprises the steps of (a) automatically sampling, over at least a last portion of the processes, (b) injecting samples from step (a) into a carrier stream, and then (c) transporting the carrier stream to a spectrophotometric detector, (d) spectrophotometrically measuring at least one characteristic of the samples, (e) controlling the process to an optimum end point based on at least one of said characteristics, and (f) repeating steps (a) through (e).
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein the samples from step (a) are physically or chemically manipulated between steps (b) and (c).
Claim 4
Dependent Claim
11 words
The method according to claim 1 wherein said processes are discontinuous.
Claim 5
Dependent Claim
20 words
The method according to claim 1 wherein said finishing and improving agents are dyes, fluorescent whitening agents and their intermediates.
Claim 6
Dependent Claim
15 words
The method according to claim 1 wherein said processes are single-phase or multi-phase preparatory processes.
Claim 7
Dependent Claim
28 words
The method according to claim 1 wherein the characteristic which is measured in step (d) is a simultaneous peak height and peak width recorded by the spectrophotometric detector.
Claim 8
Dependent Claim
35 words
The method according to claim 1 wherein the characteristic which is measured in step (d) is absorbence values detected by the spectrophotometric detector at different fixed points in time after detection of a maximum value.
Claim 9
Dependent Claim
12 words
The method according to claim 1 wherein said processes are acylation reactions.
Claim 10
Dependent Claim
12 words
The method according to claim 1 wherein said processes are diazotization reactions.
Claim 11
Dependent Claim
22 words
The method according to claim 9 wherein said processes are diazotization reactions wherein a sample is taken through a gas diffusion membrane.
Claim 12
Dependent Claim
12 words
The method according to claim 1 wherein said processes are coupling reactions.
Claim 13
Dependent Claim
40 words
The method according to claim 1 wherein the samples from step (a) are pretreated by means of continuous filtration, homogenization or dilution with a solvent or with a membrane before injecting said samples into the carrier stream of step (b).
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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) | 1994-05-27 | 1994-11-26 | 1995-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-27 | 1998-11-26 | 1999-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-27 | 2002-11-26 | 2003-05-28 | $7700.00 | Window Closed / Lapsed |