US4528075A
Expired / Lapsed
US
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Solubilization of benzylidene acetone in zinc electroplating baths
Assignee: BASF Corp
•
Filing: 1984-09-07
•
Granted: 1985-07-09
•
Expires: 2004-09-07
Abstract
Abstract In accordance with the instant invention, there is provided a method for solubilizing benzylidene acetone in a zinc plating bath which comprises adding to said bath, a small amount of a Bisphenol initiated polyoxyalkylene compound.
Inventors
- 👤 Michael J. Anchor
- 👤 Ronald L. Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:07
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
51 words
An aqueous electroplating bath for depositing zinc comprising zinc ions, benzylidene acetone, and an oxyalkylene compound which is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure C 3 -C 5 oxyalkylene groups, oxyethylene groups and the nucleus of a Bisphenol compound containing a plurality of reactive hydrogen atoms.
Claim 2
Dependent Claim
51 words
An aqueous electroplating bath for depositing zinc comprising zinc ions, benzylidene acetone, and an oxyalkylene compound which is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure C 3 -C 5 oxyalkylene groups, oxyethylene groups and the nucleus of a Bisphenol compound containing a plurality of reactive hydrogen atoms.
Claim 3
Dependent Claim
9 words
The electroplating bath of claim 1 including additional additives.
Claim 4
Dependent Claim
41 words
The aqueous electroplating bath of claim 1 comprising about 15 to 75 grams per liter of zinc ions, about 0.1 to 5 grams per liter of benzylidene acetone, and at least about 0.4 grams per liter of said Bisphenol initiated compound.
Claim 5
Dependent Claim
21 words
The zinc plating bath of claim 3 including additional additives in total amount of about 5 to 300 grams per liter.
Claim 6
Dependent Claim
33 words
The zinc plating bath of claim 3 wherein said Bisphenol initiated compound has a total molecular weight of about 1500 to 10,000 and contains about 50 to 95 percent by weight oxyethylene groups.
Claim 7
Dependent Claim
18 words
The zinc plating bath of claim 5 including about 5 to 300 grams per liter of additional additives.
Claim 8
Dependent Claim
101 words
The zinc plating bath of claim 3 wherein said Bisphenol initiated compound contains in its structure oxyethylene groups and groups selected from oxybutylene and oxypropylene groups and a nucleus of Bisphenol A containing a plurality of reactive hydrogen atoms; the compounds being characterized in that all of the oxybutylene or oxypropylene groups are present in chains that are attached to the Bisphenol A nucleus at the site of the reactive hydrogen atoms; the oxyethylene groups being attached to the polyoxybutylene or polyoxypropylene groups at the end opposite the end of said latter groups which are attached to the Bisphenol A nucleus.
Claim 9
Dependent Claim
17 words
The zinc plating bath of claim 7 containing 5 to 300 grams per liter of additional additives.
Claim 10
Dependent Claim
10 words
The electroplating bath of claim 1 including a complexing agent.
Claim 11
Dependent Claim
9 words
The electroplating bath of claim 9 including additional additives.
Claim 12
Dependent Claim
10 words
The electroplating bath of claim 9 including beta naphthol oxyethylate.
Claim 13
Dependent Claim
9 words
The electroplating bath of claim 11 including additional additives.
Claim 14
Dependent Claim
65 words
The electroplating bath of claim 9 comprising by weight about 15 to 75 grams per liter of zinc ions, about 0.1 to 5 grams per liter of benzylidene acetone, at least about 0.4 grams per liter of said Bisphenol initiated polyoxyalkylene compound, 0 to about 250 grams per liter of said complexing agent, and 0 to about 40 grams per liter of beta naphthol oxyethylate.
Claim 15
Dependent Claim
21 words
The zinc plating bath of claim 13 including additional additives in total amount of about 15 to 300 grams per liter.
Claim 16
Dependent Claim
33 words
The zinc plating bath of claim 13 wherein said Bisphenol initiated compound has a total molecular weight of about 1500 to 10,000 and contains about 50 to 95 percent by weight oxyethylene groups.
Claim 17
Dependent Claim
18 words
The zinc plating bath of claim 15 including about 5 to 35 grams per liter of boric acid.
Claim 18
Dependent Claim
18 words
The zinc plating bath of claim 15 including about 5 to 300 grams per liter of additional additives.
Claim 19
Dependent Claim
33 words
The zinc plating bath of claim 17 wherein said additional additives are selected from the group consisting of sodium benzoate, oxyethylated sorbitan monooleate and ethylenediamine initiated polyoxypropylene polyoxyethylene block copolymers and mixtures thereof.
Claim 20
Dependent Claim
43 words
The zinc plating bath of claim 18 wherein said additional additives are about 2 to 8 grams per liter of sodium benzoate and about 15 to 25 grams per liter of sorbitan monooleate oxyethylated with about 5 to 100 moles of ethylene oxide.
Claim 21
Dependent Claim
95 words
The zinc plating bath of claim 18 wherein said additional additives are about 2 to 8 grams per liter of sodium benzoate and about 2 to 8 grams per liter of an ethylenediamine initiated polyoxyethylene-polyoxybutylene block copolymer wherein the polyoxypropylene blocks are attached at the sites of the active hydrogen groups of the ethylenediamine and the oxyethylene groups are attached at the opposite ends of the oxypropylene groups which compound is a nonionic surfactant having a molecular weight of the polyoxypropylene groups of about 500 to 3000 and containing 30 to 50 percent oxyethylene groups.
Claim 22
Dependent Claim
92 words
The zinc plating bath of claim 15 wherein said Bisphenol initiated compound contains in its structure oxypropylene groups, oxyethylene groups and a nucleus of Bisphenol A containing a plurality of reactive hydrogen atoms; the compounds being characterized in that all of the oxypropylene groups are present in polyoxypropylene chains that are attached to the Bisphenol A nucleus at the site of the reactive hydrogen atoms; the oxyethylene groups being attached to the polyoxypropylene groups at the end opposite the end of said polyoxypropylene groups which are attached to the Bisphenol A nucleus.
Claim 23
Dependent Claim
18 words
The zinc plating bath of claim 21 including about 5 to 35 grams per liter of boric acid.
Claim 24
Dependent Claim
18 words
The zinc plating bath of claim 21 containing about 5 to 300 grams per liter of additional additives.
Claim 25
Dependent Claim
32 words
The zinc plating bath of claim 23 wherein said additional additives are selected from the group consisting of sodium benzoate, oxyethylated sorbitan monooleate and ethylenediamine initiated polyoxypropylene-polyoxyethylene block copolymers and mixtures thereof.
Claim 26
Dependent Claim
43 words
The zinc plating bath of claim 24 wherein said additional additives are about 2 to 8 grams per liter of sodium benzoate and about 15 to 25 grams per liter of sorbitan monooleate oxyethylated with about 5 to 100 moles of ethylene oxide.
Claim 27
Dependent Claim
95 words
The zinc plating bath of claim 24 wherein said additional additives are about 2 to 8 grams per liter of sodium benzoate and about 2 to 8 grams per liter of an ethylenediamine initiated polyoxypropylene-polyoxyethylene block copolymer wherein the polyoxypropylene blocks are attached at the sites of the active hydrogen groups of the ethylenediamine and the oxyethylene groups are attached at the opposite ends of the oxypropylene groups which compound is a nonionic surfactant having a molecular weight of the polyoxypropylene groups of about 500 to 3000 and containing 30 to 50 percent oxyethylene groups.
Claim 28
Dependent Claim
92 words
The zinc plating bath of claim 15 wherein said Bisphenol initiated compound contains in its structure oxypropylene groups, oxyethylene groups and a nucleus of Bisphenol A containing a plurality of reactive hydrogen atoms; the compounds being characterized in that all of the oxyethylene groups are present in polyoxyethylene chains that are attached to the Bisphenol A nucleus at the site of the reactive hydrogen atoms; the oxypropylene groups being attached to the polyoxyethylene groups at the end opposite the end of said polyoxyethylene groups which are attached to the Bisphenol A nucleus.
Claim 29
Dependent Claim
16 words
The zinc plating bath of claim 27 containing 5 to 300 grams per liter additional additives.
Claim 30
Dependent Claim
92 words
The zinc plating bath of claim 15 wherein said Bisphenol initiated compound contains in its structure oxybutylene groups, oxyethylene groups and a nucleus of Bisphenol A containing a plurality of reactive hydrogen atoms; the compounds being characterized in that all of the oxybutylene groups are present in polyoxybutylene chains that are attached to the Bisphenol A nucleus at the site of the reactive hydrogen atoms; the oxyethylene groups being attached to the polyoxybutylene groups at the end opposite the end of said polyoxybutylene groups which are attached to the Bisphenol A nucleus.
Claim 31
Dependent Claim
16 words
The zinc plating bath of claim 29 containing 5 to 300 grams per liter additional additives.
Claim 32
Dependent Claim
92 words
The zinc plating bath of claim 15 wherein said Bisphenol initiated compound contains in its structure oxybutylene groups, oxyethylene groups and a nucleus of Bisphenol A containing a plurality of reactive hydrogen atoms; the compounds being characterized in that all of the oxyethylene groups are present in polyoxyethylene chains that are attached to the Bisphenol A nucleus at the site of the reactive hydrogen atoms; the oxybutylene groups being attached to the polyoxyethylene groups at the end opposite the end of said polyoxyethylene groups which are attached to the Bisphenol A nucleus.
Claim 33
Dependent Claim
16 words
The zinc plating bath of claim 31 containing 5 to 300 grams per liter additional additives.
Claim 34
Independent Claim
64 words
A method for solubilizing benzylidene acetone in a zinc plating bath comprising adding to said bath at least about 0.4 grams per liter of a Bisphenol initiated polyoxyalkylene compound which is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure C 3 -C 5 oxyalkylene groups, oxyethylene groups and the nucleus of a Bisphenol compound containing a plurality of reactive hydrogen atoms.
Claim 35
Independent Claim
64 words
A method for solubilizing benzylidene acetone in a zinc plating bath comprising adding to said bath at least about 0.4 grams per liter of a Bisphenol initiated polyoxyalkylene compound which is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure C 3 -C 5 oxyalkylene groups, oxyethylene groups and the nucleus of a Bisphenol compound containing a plurality of reactive hydrogen atoms.
Claim 36
Dependent Claim
48 words
The method of claim 33 wherein the zinc plating bath is an aqueous bath comprising about 15 to 75 grams per liter of zinc ions, about 0.1 to 5.0 grams per liter of benzylidene acetone, and at least about 0.4 grams per liter of said Bisphenol initiated compound.
Claim 37
Dependent Claim
31 words
The method of claim 34 wherein said Bisphenol initiated compound has a total molecular weight of about 1500 to 10,000 and contains about 50 to 95 percent by weight oxyethylene groups.
Claim 38
Dependent Claim
25 words
The method of claim 35 wherein said Bisphenol initiated compound and said benzylidene acetone are mixed together prior to their addition to said plating bath.
References Cited (Backward Citations)
US4146442A
Cited
US4229268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |