US5260357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant waterbone adhesive primers
Assignee: Henkel Loctite Corp
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Filing: 1992-04-30
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Granted: 1993-11-09
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Expires: 2012-04-30
Abstract
Abstract An adhesive bonding primer composition containing a water-dispersible, modified epoxy resin and a water-dispersible corrosion inhibitor mixture of components I. and II. in which: Component I. is at least one, but not more than two of: (a.) a zinc salt of a carboxylic acid of the formula: ##STR1## (b.) zinc phosphate, and (c.) zinc molybdate, wherein Y 4 is hydroxyl or a radical of the formula: ##STR2## Y 3 is --CO-- or --SO 2 --, Y 1 is C 1 -C 8 -alkyl, C 1 -C 8 -alkoxy or halogen when Y 4 is other than hydroxyl, carboxyl when Y 4 is hydroxyl, or hydrogen when Y 4 is ##STR3## or Q 1 is nitro, or m is 2, Y 2 is hydrogen, C 1 -C 8 -alkyl, nitro, hydrogen or halogen, Q 1 is hydrogen, nitro or halogen, m and n are each 1 or 2; and Component II. is at least one other and different corrosion inhibitor from the group consisting of: i) (2-benzothiazolylthio)succinic acid, and ii) a corrosion inhibitor containing a metal other than chromium, having an atomic number of at least 3 and not greater than 81, from Groups 1, 2, 3, 4, 5, 6, 7 and 12 of the Periodic Table of the Elements (New Notation), and mixtures thereof. The mixtures of components I. and II. inhibit the corrosion of the water-dispersible, modified epoxy resin adhesive primer.
Inventors
- 👤 Yesh P. Sachdeva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:51
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/002; C09D5/08; C09D5/082; Y; Y10; Y10S; Y10S525/00; Y10S525/904; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
204 words
A structural adhesive bonding primer composition containing a water-dispersible, modified epoxy resin and a water-dispersible corrosion inhibitor mixture of components I. and II. in which: Component I. is at least one of: (a.) a zinc salt of a carboxylic acid of the formula: ##STR25## (b.) zinc phosphate, and (c.) zinc molybdate, wherein Y 4 is hydroxyl or a radical of the formula: ##STR26## Y 3 is --CO--or --SO 2 --, Y 1 is C 1 -C 8 -alkoxy or halogen when Y 4 is other than hydroxyl, carboxyl when Y 4 is hydroxyl, or hydrogen when Y 4 is ##STR27## or Q 1 is nitro, or m is 2, Y 2 is hydrogen, C 1 -C 8 -alkyl, nitro, hydrogen or halogen, Q 1 is hydrogen, nitro or halogen, m and n are each 1 or 2; and Component II. is at least one other and different corrosion inhibitor from the group consisting of: i) (2-benzothiazolylthio)succinic acid, and ii) a corrosion inhibitor containing a metal other than chromium, having an atomic number of at least 3 and not greater than 81, from Groups 1, 2, 3, 4, 5, 6, 7 and 12 of the Periodic Table of the Elements (New Notation), and mixtures thereof.
Claim 2
Dependent Claim
204 words
A structural adhesive bonding primer composition containing a water-dispersible, modified epoxy resin and a water-dispersible corrosion inhibitor mixture of components I. and II. in which: Component I. is at least one of: (a.) a zinc salt of a carboxylic acid of the formula: ##STR25## (b.) zinc phosphate, and (c.) zinc molybdate, wherein Y 4 is hydroxyl or a radical of the formula: ##STR26## Y 3 is --CO--or --SO 2 --, Y 1 is C 1 -C 8 -alkoxy or halogen when Y 4 is other than hydroxyl, carboxyl when Y 4 is hydroxyl, or hydrogen when Y 4 is ##STR27## or Q 1 is nitro, or m is 2, Y 2 is hydrogen, C 1 -C 8 -alkyl, nitro, hydrogen or halogen, Q 1 is hydrogen, nitro or halogen, m and n are each 1 or 2; and Component II. is at least one other and different corrosion inhibitor from the group consisting of: i) (2-benzothiazolylthio)succinic acid, and ii) a corrosion inhibitor containing a metal other than chromium, having an atomic number of at least 3 and not greater than 81, from Groups 1, 2, 3, 4, 5, 6, 7 and 12 of the Periodic Table of the Elements (New Notation), and mixtures thereof.
Claim 3
Dependent Claim
101 words
The structural adhesive bonding primer composition of claim 1 wherein component II. is a member from the group consisting of: a. (2-benzothiazolylthio)succinic acid; b. a mixture of (2-benzothiazolythio)succinic acid and calcium silicate; c. a mixture of a precipitated calcium silicate, zinc iodide, and lithium borate; d. a mixture of a precipitated calcium silicate, a calcium strontium zinc phosphosilicate, zinc iodide, and lithium borate; e. a mixture of zinc iodide and manganese (III) acetate; f. bismuth nitrate; g. cerium chloride; h. cerium molybdate; i. sodium thioglycolate; j. calcium strontium zinc phosphosilicate; and k. a water-dispersible mixture of niobium oxide and cerium molybdate.
Claim 4
Dependent Claim
33 words
The structural adhesive bonding primer composition of claim 2 wherein component I. is a mixture of zinc 5-nitroisophthalate and zinc phosphate, and component II. is the mixture of (2-benzothiazolylthio)succinic acid and calcium silicate.
Claim 5
Dependent Claim
26 words
The adhesive bonding primer composition of claim 2 wherein component I. is a mixture of zinc 5-nitroisophthalate and zinc phosphate, and component II. is cerium molybdate.
Claim 6
Dependent Claim
20 words
The adhesive bonding primer composition of claim 2 wherein component I. is zinc 5-nitroisophthalate and component Ii. is sodium thioglycolate.
Claim 7
Dependent Claim
20 words
The adhesive bonding primer composition of claim 1 wherein there is provided a small amount of a chromate corrosion inhibitor.
Claim 8
Dependent Claim
25 words
An adhesive bonding primer composition containing a water-dispersible, modified epoxy resin and a water-dispersible corrosion inhibitor comprising a mixture of niobium oxide and cerium molybdate.
Claim 9
Dependent Claim
25 words
An adhesive bonding primer composition containing a water-dispersible, modified epoxy resin and a water-dispersible corrosion inhibitor comprising a mixture of niobium oxide and cerium molybdate.
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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) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |