US3867247A
Expired / Lapsed
US
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Adhesive cements containing a sulfonated derivative of butyl rubber and laminates therefrom
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-12-17
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Granted: 1975-02-18
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Expires: 1991-12-17
Abstract
Abstract Adhesive contact cements of sulfonated olefinically unsaturated elastomers (sulfobutyl rubber) containing from about 0.1 to about 5.0 mol % SO3H neutralized, partially neutralized, or unneutralized are admixed with tackifiers, i.e. phenolformaldehyde resins, polyisobutylene, alkylphenol formaldehyde resins, petroleum resins, etc. in an amount of between about 5 and about 90 phr in between about 10 and about 50 wt. % solids concentration in organic solvents. These cements are used for adhering porous or non-porous materials such as textiles, wood, cloth, sheets or strip of metals, plastics, etc. to each other. High green strength, high tensile strength, high resistance to peel, even at elevated temperatures, water impermeability, etc. characterize such adhesive layers in laminates. A preferred solvent, 90% toluene, 10% isopropyl alcohol is used in compounding the cement and preferably an organic amine, e.g. ethylamine, is used to partially or completely neutralize the sulfonated elastomer although inorganic bases may also be used for neutralization.
Inventors
- 👤 Charles P O'farrell
- 👤 John J Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; C; C09; C09J; C09J123/00; C09J123/26; C09J123/32; B32B27/00; B32B27/12; B32B2305/00; B32B2305/02; B32B2305/026; B32B2305/10; B32B2305/18; B32B2311/00; B32B2311/24; B32B2317/00; B32B2317/10; B32B2323/00; B32B2323/10; B32B2367/00; C08; C08L; C08L2666/00; C08L2666/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/3415
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
124 words
A LAMINATE CONTAINING AT LEAST TWO SUBSTRATES BONDEED TOGETHER WITH AN ADHESIVE ELASTOMERIC SOLVENT BASED CEMENT OF A SULFONATED DERIVATIVE OF A BUTYL RUBBER HAVING A VISOCSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 100,000 TO ABOUT 450,000 CONTAINING BETWEEN ABOUT 0.1 AND ABOUT 5.0 MOL % OF SULFO GROUPS AND AS A TACKIFIER, BETWEEN ABOUT 5 AND ABOUT 90 PARTS BY WEIGHT OF AT LEAST ONE ORGANO THERMOPLASTIC RESIN HAVING A SOTENING OR MELTING POINT ABOVE 50*C PER 100 PARTS BY WEIGHT OF ELASTOMERS WHEREIN SAID SUBSTRATES ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF POROUS AND NON-POROUS MATERIALS, WHEREIN SAID NON-POROUS MATERIALS ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF STRIPS OR SHEETINGS OF POLYSTYRENE, POLYURETHANE, CELLPHANE, POLYPROPYLENE, POLYETHYLENE, MYLAR, CELLULOSE ACETATE AND METALS.
Claim 2
Dependent Claim
124 words
A LAMINATE CONTAINING AT LEAST TWO SUBSTRATES BONDEED TOGETHER WITH AN ADHESIVE ELASTOMERIC SOLVENT BASED CEMENT OF A SULFONATED DERIVATIVE OF A BUTYL RUBBER HAVING A VISOCSITY AVERAGE MOLECULAR WEIGHT OF ABOUT 100,000 TO ABOUT 450,000 CONTAINING BETWEEN ABOUT 0.1 AND ABOUT 5.0 MOL % OF SULFO GROUPS AND AS A TACKIFIER, BETWEEN ABOUT 5 AND ABOUT 90 PARTS BY WEIGHT OF AT LEAST ONE ORGANO THERMOPLASTIC RESIN HAVING A SOTENING OR MELTING POINT ABOVE 50*C PER 100 PARTS BY WEIGHT OF ELASTOMERS WHEREIN SAID SUBSTRATES ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF POROUS AND NON-POROUS MATERIALS, WHEREIN SAID NON-POROUS MATERIALS ARE INDEPENDENTLY SELECTED FROM THE GROUP CONSISTING OF STRIPS OR SHEETINGS OF POLYSTYRENE, POLYURETHANE, CELLPHANE, POLYPROPYLENE, POLYETHYLENE, MYLAR, CELLULOSE ACETATE AND METALS.
Claim 3
Dependent Claim
13 words
The laminate of claim 1 wherein the metal is aluminum, copper or steel.
Claim 4
Dependent Claim
22 words
The laminate of claim 1 wherein the porous substrate is paper, wood, paperboard, or cloth of cotton, wool, silk or synthetic fibers.
Claim 5
Dependent Claim
13 words
The laminate of claim 3 wherein the synthetic fiber is polyester or nylon.
Claim 6
Dependent Claim
61 words
The laminate of claim 1 wherein the butyl rubber comprises a blend of a high molecular weight and a low molecular weight butyl rubber wherein the high molecular weight butyl rubber has a viscosity average molecular weight of about 300,000 to 450,000 and the lower molecular weight butyl rubber has a viscosity average molecular weight of about 30,000 to about 100,000.
Claim 7
Dependent Claim
44 words
A laminate as in claim 1 wherein the sulfo butyl rubber has a Mv of between about 300,000 and about 450,000 and the solvent initially present and evaporated from the cement is a mixture of organic solvents one of which is a polar solvent.
Claim 8
Dependent Claim
13 words
A laminate as in claim 6 wherein two substrates are woven textile fibers.
Claim 9
Dependent Claim
16 words
A laminate as in claim 7 wherein one substrate is porous and the other is non-porous.
Claim 10
Dependent Claim
42 words
A laminate as in claim 6 wherein two substrates are nonporous metallic sheets and wherein the laminate formed with the cement is baked at a temperature of between about 70* and about 150*C. for from about 15 minutes to about 60 minutes.
Claim 11
Dependent Claim
22 words
A laminate as in claim 6 wherein one substrate is a nonporous metallic sheet and another substrate is a woven cloth fabric.
Claim 12
Dependent Claim
25 words
A laminate as in claim 6 wherein the tackifier is a phenol formaldehyde resin, and the sulfo butyl rubber is neutralized with an organic amine.
Claim 13
Dependent Claim
57 words
A laminate as in claim 11 wherein the sulfobutyl rubber contains about 0.5 to about 2.0 mol % sulfo groups and is fully neutralized with ethylamine, contains about 60 parts phr of a phenol formaldehyde resin tackifier and the solvent initially present and evaporated from the cement is toluene admixed with a minor amount of isopropyl alcohol.
Claim 14
Dependent Claim
18 words
A laminate as in claim 12 where the substrate is cotton cloth and another substrate is sheet aluminum.
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |