US4421783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating substrates
Assignee: Wacker Chemie AG
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Filing: 1982-02-04
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Granted: 1983-12-20
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Expires: 2002-02-04
Abstract
Abstract A process for coating a substrate which comprises coating the substrate with a solution containing an organic solvent and (1) a diorganopolysiloxane having terminal SiC-bonded vinyl groups, (2) an organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule, (3) a catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond; and optionally (4) an agent which delays or retards the addition of Si-bonded hydrogen to an aliphatic multiple bond at room temperature, (5) a diorganopolysiloxane having a viscosity of at least 10 6 mPa.s at 25° C. in which a vinyl group is bonded to a silicon atom in 0.033 to 3.33 percent of the diorganosiloxane units, while the other organic radicals in the diorganosiloxane units of the diorganopolysiloxane are free of aliphatic multiple bonds, and (6) an organosilicon adhesive compound. An acrylic acid ester polymer or copolymer (7) may be applied to the substrate simultaneously with or prior to the application of the solution containing components (1) through (6) above.
Inventors
- 👤 Heinrich Marwitz
- 👤 Kurt Ullrich
- 👤 Karl Huhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:01
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; C; C08; C08L; C08L83/00; C08L83/04; C09; C09D; C09D183/00; C09D183/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
A process for coating a substrate, which comprises coating the substrate with a composition containing (1) a diorganopolysiloxane having terminal SiC-bonded vinyl groups, (2) an organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule, (3) a catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond, (5) a diorganopolysiloxane having a viscosity of at least 10 6 mPa.s at 25° C., in which a vinyl group is bonded to the silicon atom in 0.033 to 3.33 percent of the diorganosiloxane units, while the remaining organic radicals in the diorganosiloxane units of the diorganopolysiloxane are free of aliphatic multiple bonds, (6) an organosilicon adhesive compound which promotes adhesion and an organic solvent and thereafter cross-linking the coated substrate.
Claim 2
Dependent Claim
121 words
A process for coating a substrate, which comprises coating the substrate with a composition containing (1) a diorganopolysiloxane having terminal SiC-bonded vinyl groups, (2) an organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule, (3) a catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond, (5) a diorganopolysiloxane having a viscosity of at least 10 6 mPa.s at 25° C., in which a vinyl group is bonded to the silicon atom in 0.033 to 3.33 percent of the diorganosiloxane units, while the remaining organic radicals in the diorganosiloxane units of the diorganopolysiloxane are free of aliphatic multiple bonds, (6) an organosilicon adhesive compound which promotes adhesion and an organic solvent and thereafter cross-linking the coated substrate.
Claim 3
Dependent Claim
30 words
The process of claim 1, wherein a polymeric acrylic acid ester is applied to the substrate simultaneously with the composition containing components (1), (2), (3), (5), (6) and organic solvent.
Claim 4
Dependent Claim
33 words
The process of claim 1, wherein a polymeric acrylic acid ester is applied to the substrate prior to the application of the composition containing components (1), (2), (3), (5), (6) and organic solvent.
Claim 5
Dependent Claim
29 words
The process of claim 1, 2 or 3, wherein the composition contains an agent (4) which delays or retards the addition of Si-bonded hydrogen to an aliphatic multiple bond.
Claim 6
Dependent Claim
50 words
The process of claim 1, 2 or 3, wherein from 0.33 to 1 percent of the diorganosiloxane units in the diorganopolysiloxane (5), has a vinyl group bonded to the silicon atom as an organic radical, and the remaining organic radicals in the diorganosiloxane units are free of aliphatic multiple bonds.
Claim 7
Dependent Claim
33 words
The process of claim 1, 2 or 3, wherein the diorganopolysiloxane (5) is present in an amount of from 4 to 36 percent by weight, based on the total weight of the solution.
Claim 8
Dependent Claim
28 words
The process of claim 1, 2 or 3, wherein the organosilicon adhesive compound (6) is obtained from the reaction of a vinyltriacetoxysilane, and a silane of formula: ##STR3##
Claim 9
Dependent Claim
18 words
The process of claim 1, 2 or 3, wherein the coated substrate is crosslinked at an elevated temperature.
Claim 10
Dependent Claim
17 words
The process of claim 1, wherein the organic solvent is removed and the coated substrate is cross-linked.
Claim 11
Dependent Claim
19 words
The process of claim 9, wherein the coated substrate is cross-linked at a temprature of at least 110° C.
Claim 12
Dependent Claim
14 words
The process of claim 1, wherein the coated substrate is cross-linked with ultraviolet light.
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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |