US4130707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive compositions
Assignee: Wacker Chemie AG
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Filing: 1977-05-04
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Granted: 1978-12-19
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Expires: 1997-05-04
Abstract
Abstract The invention relates to adhesive compositions comprising vinyl containing organopolysiloxanes, organopolysiloxanes having Si-bonded hydrogen atoms and catalysts which promote the addition of the Si-bonded hydrogen atoms to the vinyl groups. These adhesives may be combined with other electrically conductive materials and used in connecting flexible heating resistors to electrodes.
Inventors
- 👤 Manfred Leiser
- 👤 Karl-Heinrich Wegehaupt
- 👤 Wilhelm Marsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:59
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; H05B3/146; C; C08; C08L; C08L83/00; C09; C09J; C09J183/00; C09J183/04; H01; H01C; H01C17/00; H01C17/28; H05B3/02; H05B3/06; H10; H10W; H10W20/00; H10W20/40; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
A method for bonding plastic films prepared from organic polymers which comprises coating each surface of the plastic film with a composition consisting essentially of (a) a vinyl containing organopolysiloxane having the formula R.sub.2 (CH.sub.2 ═CH)SiO(R'.sub.2 SiO).sub.n SiR.sub.2 (CH═CH.sub.2) wherein R is selected from the group consisting of methyl and phenyl radicals, R' is selected from the group consisting of methyl, vinyl and phenyl radicals, n is a number sufficient to provide an organopolysiloxane having a viscosity of at least 100,000 cP at 25° C. in which 0.1 to 1 mol percent of the diorganopolysiloxane units are vinylmethylsiloxanes and at least 90 percent of the remaining organic radicals consist of methyl radicals, (b) an organopolysiloxane containing at least three Si-bonded hydrogen atoms in which the Si-bonded hydrogen atoms are present in an amount of from 0.01 to 1.7 weight percent and (c) a catalyst which promotes the addition of Si-bonded hydrogen atoms to the vinyl groups, intimately contacting the coated surfaces and thereafter heating to a temperature of from 100° to 200° C.
Claim 2
Independent Claim
173 words
A method for bonding plastic films prepared from organic polymers which comprises coating each surface of the plastic film with a composition consisting essentially of (a) a vinyl containing organopolysiloxane having the formula R.sub.2 (CH.sub.2 ═CH)SiO(R'.sub.2 SiO).sub.n SiR.sub.2 (CH═CH.sub.2) wherein R is selected from the group consisting of methyl and phenyl radicals, R' is selected from the group consisting of methyl, vinyl and phenyl radicals, n is a number sufficient to provide an organopolysiloxane having a viscosity of at least 100,000 cP at 25° C. in which 0.1 to 1 mol percent of the diorganopolysiloxane units are vinylmethylsiloxanes and at least 90 percent of the remaining organic radicals consist of methyl radicals, (b) an organopolysiloxane containing at least three Si-bonded hydrogen atoms in which the Si-bonded hydrogen atoms are present in an amount of from 0.01 to 1.7 weight percent and (c) a catalyst which promotes the addition of Si-bonded hydrogen atoms to the vinyl groups, intimately contacting the coated surfaces and thereafter heating to a temperature of from 100° to 200° C.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein the organic polymer is a polyimide film.
Claim 4
Dependent Claim
14 words
The method of claim 1 wherein the organic polymer is a polyethylene terephthalate film.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein the catalyst is a Group VIII element.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein the composition contains a reinforcing filler having a surface area of at least 50 m 2 /g.
References Cited (Backward Citations)
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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) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |