Patent US3847726A successfully refreshed from Google Patents.
US3847726A
Expired / Lapsed
US
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Vibration-damping sheet metal laminates
Assignee: Reichhold Albert Chemie AG
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Filing: 1972-04-24
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Granted: 1974-11-12
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Expires: 1992-04-24
Abstract
Abstract The invention relates to the manufacture of vibration-damping sheet metal laminates having a high temperature band width in the frequency range of 100 to 1,000 Hz by employing epoxy resincuring agent systems as intermediate layer.
Inventors
- 👤 W Becker
- 👤 P Osse
- 👤 R Gutte
- 👤 F Hochbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:58
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; B32B15/00; B32B15/04; B32B15/043; C08G59/62; C08G59/621; C08G59/623; C08L; C08L63/00; Y; Y10; Y10S; Y10S273/00; Y10S273/03; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
VIBRATION-DAMPING SHEET METAL LAMINATES PREPARED BY A METHOD WHICH COMPRISES APPLYING TO METAL SHEETS AT ROOM TEMPERATURE AN ADHESIVE COMPOSITION COMPRISING A. AN EPOXY COMPOUND HAVING MORE THAN ONE 1,2-EPOXY GROUP PER MOLECULE, B. A POLY-ETHER AMINE, WHICH IS THE CONDENSATION PRODUCT OF A POLYOXYPROPYLENEAMINE A PHENOL AND AN ALDEHYDE, C. A HETEROCYCLIC AMINE AND D. A PHENOL, THEN JOINING THE SHEETS TOGETHER AMD FIRST CURING AT ROOM TEMPERATURE WITH SUBSEQUENT HEAT TREATMENT, WHEREIN THE ADHESIVE COMPOSITION CONTAINS 20-130 PERCENT BY WEIGHT OF COMPONENT (B), 1-40 PERCENT BY WEIGHT OF COMPONENT (C) AND 2-15 PERCENT BY WEIGHT OF COMPONENT (D), ALL PERCENTAGES BEING RELATIVE TO THE AMOUNT OF COMPONENT (A), WITH THE PROVISO THAT THE EPOXY RESIN (A) AND THE CURING AGENTS (B), (C) AND (D) ARE CONTAINED IN AN EQUIVALENT RATIO.
Claim 2
Dependent Claim
132 words
VIBRATION-DAMPING SHEET METAL LAMINATES PREPARED BY A METHOD WHICH COMPRISES APPLYING TO METAL SHEETS AT ROOM TEMPERATURE AN ADHESIVE COMPOSITION COMPRISING A. AN EPOXY COMPOUND HAVING MORE THAN ONE 1,2-EPOXY GROUP PER MOLECULE, B. A POLY-ETHER AMINE, WHICH IS THE CONDENSATION PRODUCT OF A POLYOXYPROPYLENEAMINE A PHENOL AND AN ALDEHYDE, C. A HETEROCYCLIC AMINE AND D. A PHENOL, THEN JOINING THE SHEETS TOGETHER AMD FIRST CURING AT ROOM TEMPERATURE WITH SUBSEQUENT HEAT TREATMENT, WHEREIN THE ADHESIVE COMPOSITION CONTAINS 20-130 PERCENT BY WEIGHT OF COMPONENT (B), 1-40 PERCENT BY WEIGHT OF COMPONENT (C) AND 2-15 PERCENT BY WEIGHT OF COMPONENT (D), ALL PERCENTAGES BEING RELATIVE TO THE AMOUNT OF COMPONENT (A), WITH THE PROVISO THAT THE EPOXY RESIN (A) AND THE CURING AGENTS (B), (C) AND (D) ARE CONTAINED IN AN EQUIVALENT RATIO.
Claim 3
Dependent Claim
21 words
Vibration-damping sheet metal laminate prepared according to the method of claim 1 wherein the adhesive composition further contains (e) a polyamidoamine.
Claim 4
Dependent Claim
30 words
Vibration-damping sheet metal laminates according to claim 1 wherein the epoxy compound (a) is based upon Bisphenol A, epichlorohydrin and castor oil and has an epoxide equivalent of about 187.
Claim 5
Dependent Claim
15 words
Vibration-damping sheet metal laminate according to claim 1 wherein the heterocyclic amine (c) is N-aminoethylpiperazine.
Claim 6
Dependent Claim
14 words
Vibration-damping sheet metal laminate according to claim 1 wherein the phenol (d) is nonylphenol.
Claim 7
Dependent Claim
13 words
Vibration-damping sheet metal laminate according to claim 1 wherein the polyetheramine (b) is
Claim 8
Dependent Claim
45 words
Vibration-damping sheet metal laminate according to claim 2, wherein the polyamidoamine (e) is a reaction product of diethylenetetramine, an oligomeric copolymer of styrene and conjugated unsaturated fatty acid, having an amine number of 85 to 100 and a viscosity of 450 - 650 P (40*C).
Claim 9
Dependent Claim
52 words
Vibration-damping sheet metal laminate according to claim 2, wherein the adhesive composition contains 45 - 65 percent by weight of component (e) relative to the amount of component (a), with the proviso that the epoxy resin (a) and the curing agents (b), (c), (d) and (e) are contained in an equivalent ratio.
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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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |