US3755096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bright acid tin plating
Assignee: Arkema Inc
•
Filing: 1971-07-01
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Granted: 1973-08-28
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Expires: 1991-07-01
Abstract
Abstract This invention relates to the electrodeposition of tin; acid tin plating compositions, acid tin plating baths; to processes for the electrodeposition of bright tin in the presence of glacial acrylic acid, at least one non-ionic alkoxylated wetting agent, and as a novel brightener, the reaction product of hexan-2,5dione and a compound selected from the group consisting of homocyclic aromatic aldehydes and 5-membered ring heterocyclic aldehydes, wherein the aldehyde group is bonded directly to the aromatic ring, conjugated aromatic ring or 5-membered ring heterocyclic group, said ring or group being otherwise inertly substituted or unsubstituted; to said novel brighteners; and a method of producing said novel brighteners.
Inventors
- 👤 F Passal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:58
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/46; C25; C25D; C25D3/00; C25D3/02; C25D3/30; C25D3/32
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
17 words
The process of claim 1 wherein the non-ionic water soluble alkoxylated wetting agent is of the formula:
Claim 2
Dependent Claim
42 words
The process of claim 1 wherein the non-ionic water soluble alkoxylated wetting agent is of the formula: RNH (CH2CH2O)nH wherein R is a mixture of isomers exhibiting 12 to 22 carbon atoms and having a tertiary alkyl structure and n is 15.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein the non-ionic water soluble alkoxylated wetting agent is of the formula:
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said 5-membered heterocyclic ring aldehyde is furfuraldehyde.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein said 6-membered homocyclic ring aldehyde is benzaldehyde.
Claim 6
Dependent Claim
24 words
The process of claim 1 wherein said stannous compound is present in an amount of 10 grams per liter to 100 grams per liter.
Claim 7
Dependent Claim
25 words
The process of claim 1 wherein said glacial acrylic acid is present in an amount of 0.025 gram per liter to 0.5 gram per liter.
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein said water soluble alkoxylated wetting agent is present in an amount of 1 gram per liter to 50 grams per liter.
Claim 9
Dependent Claim
50 words
The process of claim 1 wherein said reaction product of hexan-2,5-dione and a member selected from the group consisting of 5-membered heterocyclic ring aldehydes, 6-membered homocyclic ring aldehydes and condensed aromatic rings bearing aldehyde groups is present in an amount of 0.005 gram per liter to 1.0 gram per liter.
Claim 10
Dependent Claim
79 words
A composition for providing bright highly leveled tin electrodeposits which comprises a bath composition containing: a. 10 grams per liter to 100 grams per liter of stannous sulfate; b. 20 grams per liter to 200 grams per liter of sulfuric acid; c. 0.025 grams per liter to 0.5 gram per liter of glacial acrylic acid; d. 1 gram per liter to 50 grams per liter of a non-ionic water soluble alkoxylated wetting agent selected from the group consisting of:
Claim 11
Dependent Claim
19 words
A composition as claimed in claim 11 wherein the non-ionic water soluble alkoxylated wetting agent is of the formula:
Claim 12
Dependent Claim
44 words
A composition as claimed in claim 11 wherein the non-ionic water soluble alkoxylated wetting agent is of the formula: RNH (CH2CH2O)nH wherein R is a mixture of isomers exhibiting 12 to 22 carbon atoms and having a tertiary alkyl structure and n is 15.
Claim 13
Dependent Claim
18 words
A composition as claimed in claim 11 wherein the water soluble alkoxylated wetting agent is of the formula:
Claim 14
Dependent Claim
16 words
The composition of claim 11 wherein the brightener is the reaction product of hexan-2,5-dione and furfuraldehyde.
Claim 15
Dependent Claim
16 words
The composition of claim 11 wherein the brightener is the reaction product of hexan-2,5-dione and benzaldehyde.
Claim 16
Dependent Claim
25 words
The composition of claim 11 wherein said glacial acrylic acid is present in an amount of 0.025 gram per liter to 0.5 gram per liter.
Claim 17
Dependent Claim
28 words
The composition of claim 11 wherein said non-ionic water soluble alkoxylated wetting agent is present in an amount of 1 gram per liter to 50 grams per liter.
Claim 18
Dependent Claim
23 words
The composition of claim 11 wherein said brightener is present in an amount of 0.005 gram per liter to 1.0 gram per liter.
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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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |