Patent US3936412A successfully refreshed from Google Patents.
US3936412A
Expired / Lapsed
US
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Thermosetting sealing materials
Assignee: Henkel Teroson GmbH
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Filing: 1974-09-23
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Granted: 1976-02-03
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Expires: 1994-09-23
Abstract
Abstract Improved thermosetting sealing materials, for example polyurethane or polysulphide compositions which can be cured in a high frequency alternating electric field, are described which contain electrically non-conducting pigments and/or filler whose dielectric constant exceeds 200.
Inventors
- 👤 Martin-Gottfried Rocholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:26
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08G; C08G18/00; C08G18/06; C08G18/08; C08J; C08J3/00; C08J3/24; C08J3/247; C08L; C08L81/00; C08L81/04; C09; C09J; C09J5/00; C09J5/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
A thermosetting sealing composition especially adapted for curing in a high frequency alternating electric field, said composition comprising a thermosetting resinous sealant to which has been added electrically nonconducting pigments and/or fillers whose dielectric constant ε exceeds 200 in an amount sufficient to accelerate the thermosetting of said resinous sealant.
Claim 2
Dependent Claim
50 words
A thermosetting sealing composition especially adapted for curing in a high frequency alternating electric field, said composition comprising a thermosetting resinous sealant to which has been added electrically nonconducting pigments and/or fillers whose dielectric constant ε exceeds 200 in an amount sufficient to accelerate the thermosetting of said resinous sealant.
Claim 3
Dependent Claim
33 words
The sealing composition of claim 1 wherein the amount of said non-conducting pigment and/or filler having said dielectric constant exceeding 200 present is from 0.1 to 20 percent by weight of the composition.
Claim 4
Dependent Claim
15 words
The sealing composition of claim 1 wherein said dielectric constant is between 1000 and 20,000.
Claim 5
Dependent Claim
30 words
The sealing composition of claim 1, having in addition to said filler and/or pigment having said dielectric constant above 200, fillers and/or pigments whose dielectric constant is less than 200.
Claim 6
Dependent Claim
26 words
The sealing composition of claim 1 wherein said filler and/or pigment is BaTiO 3 or a mixed sintered product containing BaTiO 3 as the main component.
Claim 7
Dependent Claim
21 words
The sealing composition of claim 4 wherein said thermosetting resin has dielectric constant and tan δ values as high as possible.
Claim 8
Dependent Claim
26 words
The sealing composition of claim 4 additionally containing cross-linking agents and/or plasticizers and/or stabilizers whose dielectric constant and tan δ values are as high as possible.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |