US3657080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mist suppression in electroplating solutions
Assignee: M&T Chemicals Inc
•
Filing: 1968-09-25
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Granted: 1972-04-18
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Expires: 1988-09-25
Abstract
Abstract In accordance with certain of its aspects, this invention relates to novel compositions and to a process for suppressing mist formation in an aqueous composition which comprises incorporating hydrophobic particles having a particle size of 0.002-100 microns into said aqueous compositions. The process is applicable, for example, to chromium electroplating solutions.
Inventors
- 👤 Hyman Chessin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:05
CPC Classifications
C; C25; C25D; C25D21/00; C25D21/11; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
18 words
A process as claimed in claim 1 wherein the hydrophobic particles have an average diameter of 0.005-10 microns.
Claim 2
Dependent Claim
92 words
A process for suppressing the production of fumes and mists from a chromium electroplating bath composition which comprises passing current from an anode to a metal cathode through an aqueous electroplating bath solution containing a chromium metal compound providing chromium metal ions for electroplating metal and including an effective amount of a blended dispersion of hydrophobic particles having a particle size of 0.002-100 microns to produce a plated article from said electroplating bath solution, and wherein the concentration of said particles is at least 0.04 grams per square decimeter of gas-liquid interface.
Claim 3
Dependent Claim
19 words
A process as claimed in claim 3 wherein the electroplating bath is maintained at a temperature of 5*-100* C.
Claim 4
Dependent Claim
38 words
A process as claimed in claim 3 wherein the concentration of the hydrophobic particles in the electroplating bath solution is about 0.04-75 grams of hydrophobic particles per square decimeter of aqueous electroplating bath composition at the gas-liquid interface.
Claim 5
Dependent Claim
22 words
A process as claimed in claim 3 wherein the hydrophobic particles contain hydrophobic silica having an average particle diameter of 0.005-10 microns.
Claim 6
Dependent Claim
61 words
A novel composition containing an aqueous chromium electroplating bath composition and an effective amount of a blended dispersion of hydrophobic silica particles having a particle size of 0.002-100 microns wherein the concentration of the hydrophobic particles is about 0.04-75 grams of hydrophobic particles per square decimeter of aqueous acid surface at the gas-liquid interface of the aqueous acid and the atmosphere.
Claim 7
Dependent Claim
19 words
A novel composition as claimed in claim 7 wherein the hydrophobic particles have an average diameter of 0.005-10 microns.
References Cited (Backward Citations)
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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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |