US4376000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for and method of after-treatment of phosphatized metal surfaces
Assignee: Henkel Corp
•
Filing: 1980-11-28
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Granted: 1983-03-08
•
Expires: 2000-11-28
Abstract
Abstract A process of post-treating a conversion-coated metal surface by contacting the surface with a dilute solution of a post-treatment compound, or a metal salt thereof, where the post-treatment compound is poly-4-vinylphenol or the reaction product of an aldehyde or ketone and poly-4-vinylphenol.
Inventors
- 👤 Andreas Lindert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:26
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/173; C23C; C23C22/00; C23C22/82; C23C22/83
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
80 words
In a process of post-treating a phosphate-type conversion coated metal surface, the improvement comprising contacting said surface with a post-treatment compound selected from the group consisting of compounds and salts thereof having the following general formula: ##STR3## wherein n is from about 5 to about 100; each x is independently selected from H or CRR 1 OH; and each of R and R 1 is independently selected from aliphatic or aromatic organic moieties having from 1 to 12 carbon atoms.
Claim 2
Dependent Claim
80 words
In a process of post-treating a phosphate-type conversion coated metal surface, the improvement comprising contacting said surface with a post-treatment compound selected from the group consisting of compounds and salts thereof having the following general formula: ##STR3## wherein n is from about 5 to about 100; each x is independently selected from H or CRR 1 OH; and each of R and R 1 is independently selected from aliphatic or aromatic organic moieties having from 1 to 12 carbon atoms.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein at least one x is CH 2 OH.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein said post-treatment compound is the reaction product of poly-4-vinylphenol and formaldehyde.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein said post-treatment compound is a metal salt and is in solution in an aqueous medium.
Claim 6
Dependent Claim
14 words
The process of claim 4 wherein at least one x is CH 2 OH.
Claim 7
Dependent Claim
26 words
The process of claim 4 wherein said metal salt is present in said solution in a concentration of from about 0.01% to about 5% by weight.
Claim 8
Dependent Claim
26 words
The process of claim 4 wherein said metal salt is present in said solution in a concentration of from about 0.1% to about 1% by weight.
Claim 9
Dependent Claim
11 words
The process of claim 1 wherein said post-treatment compound is poly-4-vinylphenol.
Claim 10
Dependent Claim
18 words
The process of claim 8 wherein said metal surface is contacted with an organic solution comprising said poly-4-vinylphenol.
Claim 11
Dependent Claim
14 words
The process of claim 1 wherein said post-treatment compound is a salt of poly-4-vinylphenol.
Claim 12
Dependent Claim
18 words
The process of claim 1 wherein said post-treatment compound is a reaction product of poly-4-vinylphenol and an aldehyde.
Claim 13
Dependent Claim
18 words
The process of claim 1 wherein said post-treatment compound is a reaction product of poly-4-vinylphenol and a ketone.
References Cited (Backward Citations)
US3573997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |