US5262232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration damping constructions using acrylate-containing damping materials
Assignee: 3M Co
•
Filing: 1992-01-22
•
Granted: 1993-11-16
•
Expires: 2012-01-22
Abstract
Abstract Acrylate-only and epoxy-acrylate thermoset resins exhibit high temperature damping behavior. These materials are suitable for damping vibrations in structures and component parts of devices where high temperature performance is required, such as in automobiles, aircraft, industrial equipment and appliances.
Inventors
- 👤 Debra L. Wilfong
- 👤 David J. Drath
- 👤 Michael C. Palazzotto
- 👤 Peggy S. Willett
- 👤 Henry B. Clark, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/30; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/308; B32B27/38; C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/08; F16F1/00; F16F1/36; F16F1/3605; B32B2307/00; B32B2307/50; B32B2307/56; B32B2605/00; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/26; Y10T428/29; Y10T428/2913; Y10T428/298; Y10T428/31504; Y10T428/31507; Y10T428/31511; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
25 words
A damping construction comprising at least one layer of viscoelastic material applied to a vibratory solid article, said viscoelastic material comprising an epoxy-acrylate thermoset resin.
Claim 2
Dependent Claim
25 words
A damping construction comprising at least one layer of viscoelastic material applied to a vibratory solid article, said viscoelastic material comprising an epoxy-acrylate thermoset resin.
Claim 3
Dependent Claim
40 words
The damping construction according to claim 1, wherein a substrate is applied over said viscoelastic material wherein said substrate is selected from the group consisting of metals, stiff polymeric materials, fiber-reinforced thermosets, ceramic fibers, glass, ceramics and metal fiber-reinforced polyester.
Claim 4
Dependent Claim
53 words
The damping construction according to claim 1, wherein said viscoelastic material is the reaction product of an epoxy-acrylate thermoset resin composition comprising: a. an epoxy monomer; b. an acrylate monomer; and c. a catalyst in an effective amount to polymerize said acrylate monomer and said epoxy monomer in the presence of each other.
Claim 5
Dependent Claim
31 words
The damping construction according to claim 1, further comprising a thermoplastic selected from the group consisting of polyphenylene sulfone, polybenzimidazole, polyether sulfone, polyester, polyimide, polyetherimide, polyphenylene oxide, polysulfone, acrylate and methacrylate.
Claim 6
Dependent Claim
13 words
The damping construction according to claim 1, further comprising a rubber toughening agent.
Claim 7
Dependent Claim
83 words
A viscoelastic damping material wherein the damping material is the reaction product of a mixture comprising (a) at least one epoxy monomer, (b) at least one acrylate monomer, (c) a free radical initiator, and (d) a cationic initiator, wherein the cationic initiator comprises: (1) at least one organometallic complex salt, (2) a thermally decomposable ester reaction product of a tertiary alcohol and an acid that forms a chelation complex with the metal ion of the organometallic complex salt, and (3) optionally, a peroxide.
Claim 8
Dependent Claim
83 words
A viscoelastic damping material wherein the damping material is the reaction product of a mixture comprising (a) at least one epoxy monomer, (b) at least one acrylate monomer, (c) a free radical initiator, and (d) a cationic initiator, wherein the cationic initiator comprises: (1) at least one organometallic complex salt, (2) a thermally decomposable ester reaction product of a tertiary alcohol and an acid that forms a chelation complex with the metal ion of the organometallic complex salt, and (3) optionally, a peroxide.
Claim 9
Dependent Claim
26 words
The damping construction according to claim 6, wherein the thermally decomposable ester reaction product is selected from the group consisting of oxalate, phosphate, phosphonate, and phosphinate.
Claim 10
Dependent Claim
21 words
The damping construction according to claim 7, wherein the viscoelastic damping material is the damping layer applied to a vibratory article.
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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) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |