US3859239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive for bonding rubber to steel
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1972-10-16
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Granted: 1975-01-07
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Expires: 1992-10-16
Abstract
Abstract This invention is a water-based, curable adhesive for bonding rubber to bright steel that provides high bonding strength with good long term bond aging characteristics. The adhesive comprises an admixture of a styrene-butadiene-carboxylic acid polymeric latex, a water-soluble epoxy compound and an epoxy curing agent.
Inventors
- 👤 Gils Gerard Edward Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:54
CPC Classifications
C; C09; C09J; C09J163/00; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/16; C08K5/17; C08L; C08L51/00; C08L51/003; C08L63/00; C09J151/00; C09J151/003; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/28
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A CURABLE ADHESIVE COMPOSITION FOR BONDING BRIGHT STEEL AND BRIGHT ALLOY STEELS TO NATURAL RUBBER AND SNYTHETIC REPLACEMENTS THEREFOR CONSISTING OF, IN WATER, THE FOLLOWING ADMIXTURE WHEREIN THE INGREDIENTS ARE IN PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF LATEX SOLIDS: A. A STYRENE-BUTADIENE-CARBOXYLIC ACID POLYMERIC LATEX HAVING A STYRENE TO BUTADIENE RATIO OF FROM 30:70 TO 70:30 AND CONTAINING THE POLYMERIZATION PRODUCT OF FROM ABOUT 0.5 TO ABOUT 2.5 PARTS OF A POLYMERIZABLE CARBOXYLIC ACID; B. A LIQUID EPOXY COMPOUND WITH AN AVERAGE MOLECULAR WEIGHT RANGING FROM 100 TO 450 AND AN EPOXIDE EQUIVALENT OF AT LEAST 50 AND THAT IS WATER SOLUBLE TO THE EXTENT OF AT LEAST 97% BY WEIGHT, IN AN AMOUNT FROM ABOUT 10 TO ABOUT 50 PARTS; AND, C. AT LEAST A CURABLE AMOUNT OF AN EPOXY CURING AGENT SELECTED FROM THE CLASS OF POLYFUNCTIONAL PRIMARY, SECONDARY AND TERTIARY AMINES.
Claim 2
Dependent Claim
147 words
A CURABLE ADHESIVE COMPOSITION FOR BONDING BRIGHT STEEL AND BRIGHT ALLOY STEELS TO NATURAL RUBBER AND SNYTHETIC REPLACEMENTS THEREFOR CONSISTING OF, IN WATER, THE FOLLOWING ADMIXTURE WHEREIN THE INGREDIENTS ARE IN PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF LATEX SOLIDS: A. A STYRENE-BUTADIENE-CARBOXYLIC ACID POLYMERIC LATEX HAVING A STYRENE TO BUTADIENE RATIO OF FROM 30:70 TO 70:30 AND CONTAINING THE POLYMERIZATION PRODUCT OF FROM ABOUT 0.5 TO ABOUT 2.5 PARTS OF A POLYMERIZABLE CARBOXYLIC ACID; B. A LIQUID EPOXY COMPOUND WITH AN AVERAGE MOLECULAR WEIGHT RANGING FROM 100 TO 450 AND AN EPOXIDE EQUIVALENT OF AT LEAST 50 AND THAT IS WATER SOLUBLE TO THE EXTENT OF AT LEAST 97% BY WEIGHT, IN AN AMOUNT FROM ABOUT 10 TO ABOUT 50 PARTS; AND, C. AT LEAST A CURABLE AMOUNT OF AN EPOXY CURING AGENT SELECTED FROM THE CLASS OF POLYFUNCTIONAL PRIMARY, SECONDARY AND TERTIARY AMINES.
Claim 3
Dependent Claim
16 words
The composition of claim 1 wherein said styrene to butadiene ratio is from 50:50 to 40:60.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein said polymerizable carboxylic acid is selected from the group consisting of monocarboxylic acids, dicarboxylic acids, tricarboxylic acids, and mixtures thereof.
Claim 5
Dependent Claim
24 words
The composition of claim 3 wherein said polymerizable carboxylic acid is selected from the group consisting of methacrylic acid, acrylic acid, and itaconic acid.
Claim 6
Dependent Claim
17 words
The composition of claim 1 wherein said water-soluble epoxy compound is a diglycidyl ether of 1,4-butane diol.
Claim 7
Dependent Claim
16 words
The composition of claim 1 wherein said water-soluble epoxy compound is a diglycidyl ether of glycerol.
Claim 8
Dependent Claim
23 words
The composition of claim 1 including up to 30 parts of a wax having a melting point between 60* to 100*C. emulsified therein.
Claim 9
Dependent Claim
12 words
The composition of claim 7 wherein said wax is a paraffinic wax.
Claim 10
Dependent Claim
16 words
The composition of claim 1 including from about 0.10 to 10.0 parts of a soluble phosphate.
Claim 11
Dependent Claim
12 words
The composition of claim 9 wherein said soluble phosphate is sodium phosphate.
Claim 12
Dependent Claim
12 words
The composition of claim 9 wherein said soluble phosphate is tetrasodium pyrophosphate.
Claim 13
Dependent Claim
8 words
The composition of claim 1 including an antioxidant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |