US4546018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition and primer
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1984-12-20
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Granted: 1985-10-08
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Expires: 2004-12-20
Abstract
Abstract What is disclosed is a new and novel primer composition comprising a silicone modified epoxy resin and an organotitanium acid ester. These compositions are useful for priming solid substrates to allow the adherence of room temperature cured silicone rubber to the substrate. The compositions are also useful as protective coatings.
Inventors
- 👤 Mikami Ryuzo
- 👤 Katsuyoshi Nakasuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G59/306; C08G59/68; C08G59/681; C08G59/70; C09; C09D; C09D183/00; C09D183/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
236 words
A method of bonding a room temperature curable rubber coating to a solid substrate which comprises (I) contacting a solid substrate with a room temperature curable primer composition comprising (A) 100 parts by weight of a silicone modified epoxy resin which contains both epoxy groups and silicon-bonded alkoxy groups wherein the modified epoxy resin is obtained by contacting and reacting (a) a compound having the unit formula ##EQU3## wherein R is a substituted or unsubstituted monovalent hydrocarbon radical, X is an alkoxy radical having the formula R'O-- wherein R' is an alkyl radical of 1 to 4 carbon atoms or the radical R 2 OR 3 -- wherein R 2 is an alkyl radical of 1 to 4 carbon atoms and R 3 is a divalent alkylene radical of 1 to 3 carbon atoms; a has a value of 0 to 2; b has a value of 1 to 4 and the sum of a+b has a value of 1 to 4, with (b) an epoxy resin containing at least one epoxy group and at least one hydroxy group per molecule; and (B) 0.1 to 100 parts by weight of an organotitanium acid ester, and (II) allowing said primer to air dry (III) surmounting the air dried primer with a room temperature curable rubber, and (IV) allowing the room temperature curable rubber to cure whereby the room temperature curable rubber is bonded to the solid substrate.
Claim 2
Independent Claim
236 words
A method of bonding a room temperature curable rubber coating to a solid substrate which comprises (I) contacting a solid substrate with a room temperature curable primer composition comprising (A) 100 parts by weight of a silicone modified epoxy resin which contains both epoxy groups and silicon-bonded alkoxy groups wherein the modified epoxy resin is obtained by contacting and reacting (a) a compound having the unit formula ##EQU3## wherein R is a substituted or unsubstituted monovalent hydrocarbon radical, X is an alkoxy radical having the formula R'O-- wherein R' is an alkyl radical of 1 to 4 carbon atoms or the radical R 2 OR 3 -- wherein R 2 is an alkyl radical of 1 to 4 carbon atoms and R 3 is a divalent alkylene radical of 1 to 3 carbon atoms; a has a value of 0 to 2; b has a value of 1 to 4 and the sum of a+b has a value of 1 to 4, with (b) an epoxy resin containing at least one epoxy group and at least one hydroxy group per molecule; and (B) 0.1 to 100 parts by weight of an organotitanium acid ester, and (II) allowing said primer to air dry (III) surmounting the air dried primer with a room temperature curable rubber, and (IV) allowing the room temperature curable rubber to cure whereby the room temperature curable rubber is bonded to the solid substrate.
Claim 3
Dependent Claim
29 words
A method as claimed in claim 1 wherein in the primer, there is present 5 to 25 parts by weight of component (B) for 100 parts of component (A).
Claim 4
Dependent Claim
17 words
A method as claimed in claim 1 wherein in the primer, component (B) is a titanium chelate.
Claim 5
Dependent Claim
21 words
A method as claimed in claim 3 wherein in the primer, the titanium chelate is a beta-diketone chelate of dialkoxytitanium compounds.
Claim 6
Dependent Claim
22 words
A method as claimed in claim 3 wherein in the primer, the titanium chelate is a ketoacid ester chelate of dialkoxytitanium compounds.
Claim 7
Dependent Claim
16 words
A method as claimed in claim 1 wherein the room temperature curable rubber is silicone rubber.
Claim 8
Dependent Claim
18 words
A method as claimed in claim 1 wherein the room temperature curable rubber is a silicone-modified organic rubber.
Claim 9
Independent Claim
234 words
A method of bonding a room temperature curable rubber coating to a solid substrate which comprises (I) contacting a solid substrate with a room temperature curable primer composition comprising (A) 100 parts by weight of a silicone modified epoxy resin which contains both epoxy groups and silicon-bonded alkoxy groups wherein the modified epoxy resin is obtained by contacting and reacting (a) a compound having the unit formula ##EQU4## wherein R is a substituted or unsubstituted monovalent hydrocarbon radical, X is an alkoxy radical having the formula R'O-- wherein R' is an alkyl radical of 1 to 4 carbon atoms or the radical R 2 OR 3 -- wherein R 2 is an alkyl radical of 1 to 4 carbon atoms and R 3 is a divalent alkylene radical of 1 to 3 carbon atoms; a has a value of 0 to 2; b has a value of 1 to 4 and the sum of a+b has a value of 1 to 4, with (b) an epoxy resin containing at least one epoxy group and at least one hydroxy group per molecule; and (B) 0.1 to 100 parts by weight of an organotitanium acid ester, and (II) allowing said primer to cure; (III) surmounting the cured primer with a room temperature curable rubber, and (IV) allowing the room temperature curable rubber to cure whereby the room temperature curable rubber is bonded to the solid substrate.
Claim 10
Independent Claim
234 words
A method of bonding a room temperature curable rubber coating to a solid substrate which comprises (I) contacting a solid substrate with a room temperature curable primer composition comprising (A) 100 parts by weight of a silicone modified epoxy resin which contains both epoxy groups and silicon-bonded alkoxy groups wherein the modified epoxy resin is obtained by contacting and reacting (a) a compound having the unit formula ##EQU4## wherein R is a substituted or unsubstituted monovalent hydrocarbon radical, X is an alkoxy radical having the formula R'O-- wherein R' is an alkyl radical of 1 to 4 carbon atoms or the radical R 2 OR 3 -- wherein R 2 is an alkyl radical of 1 to 4 carbon atoms and R 3 is a divalent alkylene radical of 1 to 3 carbon atoms; a has a value of 0 to 2; b has a value of 1 to 4 and the sum of a+b has a value of 1 to 4, with (b) an epoxy resin containing at least one epoxy group and at least one hydroxy group per molecule; and (B) 0.1 to 100 parts by weight of an organotitanium acid ester, and (II) allowing said primer to cure; (III) surmounting the cured primer with a room temperature curable rubber, and (IV) allowing the room temperature curable rubber to cure whereby the room temperature curable rubber is bonded to the solid substrate.
Claim 11
Dependent Claim
29 words
A method as claimed in claim 8 wherein in the primer, there is present 5 to 25 parts by weight of component (B) for 100 parts of component (A).
Claim 12
Dependent Claim
17 words
A method as claimed in claim 8 wherein in the primer, component (B) is a titanium chelate.
Claim 13
Dependent Claim
21 words
A method as claimed in claim 10 wherein in the primer, the titanium chelate is a beta-diketone chelate of dialkoxytitanium compounds.
Claim 14
Dependent Claim
22 words
A method as claimed in claim 10 wherein in the primer, the titanium chelate is a ketoacid ester chelate of dialkoxytitanium compounds.
Claim 15
Dependent Claim
16 words
A method as claimed in claim 8 wherein the room temperature curable rubber is silicone rubber.
Claim 16
Dependent Claim
18 words
A method as claimed in claim 8 wherein the room temperature curable rubber is a silicone-modified organic rubber.
Claim 17
Independent Claim
239 words
A method of bonding a room temperature curable rubber coating to a solid substrate which comprises (I) contacting a solid substrate with a room temperature curable primer composition comprising (A) 100 parts by weight of a silicone modified epoxy resin which contains both epoxy groups and silicon-bonded alkoxy groups wherein the modified epoxy resin is obtained by contacting and reacting (a) a compound having the unit formula ##EQU5## wherein R is a substituted or unsubstituted monovalent hydrocarbon radical, X is an alkoxy radical having the formula R'O-- wherein R' is an alkyl radical of 1 to 4 carbon atoms or the radical R 2 OR 3 -- wherein R 2 is an alkyl radical of 1 to 4 carbon atoms and R 3 is a divalent alkylene radical of 1 to 3 carbon atoms; a has a value of 0 to 2; b has a value of 1 to 4 and the sum of a+b has a value of 1 to 4, with (b) an epoxy resin containing at least one epoxy group and at least one hydroxy group per molecule; and (B) 0.1 to 100 parts by weight of an organotitanium acid ester, and (II) allowing said primer to air dry; (III) curing said primer; (IV) Surmounting the cured primer with a room temperature curable rubber, and (V) allowing the room temperature curable rubber to cure whereby the room temperature curable rubber is bonded to the solid substrate.
Claim 18
Independent Claim
239 words
A method of bonding a room temperature curable rubber coating to a solid substrate which comprises (I) contacting a solid substrate with a room temperature curable primer composition comprising (A) 100 parts by weight of a silicone modified epoxy resin which contains both epoxy groups and silicon-bonded alkoxy groups wherein the modified epoxy resin is obtained by contacting and reacting (a) a compound having the unit formula ##EQU5## wherein R is a substituted or unsubstituted monovalent hydrocarbon radical, X is an alkoxy radical having the formula R'O-- wherein R' is an alkyl radical of 1 to 4 carbon atoms or the radical R 2 OR 3 -- wherein R 2 is an alkyl radical of 1 to 4 carbon atoms and R 3 is a divalent alkylene radical of 1 to 3 carbon atoms; a has a value of 0 to 2; b has a value of 1 to 4 and the sum of a+b has a value of 1 to 4, with (b) an epoxy resin containing at least one epoxy group and at least one hydroxy group per molecule; and (B) 0.1 to 100 parts by weight of an organotitanium acid ester, and (II) allowing said primer to air dry; (III) curing said primer; (IV) Surmounting the cured primer with a room temperature curable rubber, and (V) allowing the room temperature curable rubber to cure whereby the room temperature curable rubber is bonded to the solid substrate.
Claim 19
Dependent Claim
29 words
A method as claimed in claim 15 wherein in the primer, there is present 5 to 25 parts by weight of component (B) for 100 parts of component (A).
Claim 20
Dependent Claim
17 words
A method as claimed in claim 15 wherein in the primer, component (B) is a titanium chelate.
Claim 21
Dependent Claim
21 words
A method as claimed in claim 17 wherein in the primer, the titanium chelate is a beta-diketone chelate of dialkoxytitanium compounds.
Claim 22
Dependent Claim
22 words
A method as claimed in claim 17 wherein in the primer, the titanium chelate is a ketoacid ester chelate of dialkoxytitanium compounds.
Claim 23
Dependent Claim
16 words
A method as claimed in claim 15 wherein the room temperature curable rubber is silicone rubber.
Claim 24
Dependent Claim
18 words
A method as claimed in claim 15 wherein the room temperature curable rubber is a silicone-modified organic rubber.
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) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |