Patent EP0684746A2 successfully refreshed from Google Patents.
US4400482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel fluoroelastomer film compositions containing silane compounds and method for the preparation thereof
Assignee: David Hudson Inc
•
Filing: 1982-03-18
•
Granted: 1983-08-23
•
Expires: 2002-03-18
Abstract
Abstract The invention herein disclosed provides a method for preparing improved fluoroelastomer film compositions including the steps of dissolving a fluoroelastomer gum selected from the group consisting of copolymers of vinylidene fluoride and hexafluoropropylene, and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene in a solvent, adding a silane compound to the gum solution and curing the fluoroelastomer gum with a silane in the absence of metallic oxides. A method is also provided for adhering fluoroelastomer film compositions, devoid of metallic oxides, to substrates which includes the steps of dissolving the fluoroelastomer gum in a solvent, adding a silane compound to the gum solution, coating the substrate with the fluoroelastomer gum-silane solution, evaporating the solvent and leaving a film firmly adhered to the substrate. Another method includes the steps of first coating a substrate with a silane compound, then applying a fluoroelastomer gum solution over the silane coated substrate, evaporating the solvent and leaving a film firmly adhered to the substrate. The fluoroelastomer film compositions disclosed herein are also novel and can be used to coat a variety of substrates thereby providing other novel, useful articles.
Inventors
- 👤 Donald Close
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
114 words
A method for preparing fluoroelastomer film composition solutions including the steps of: dissolving a fluoroelastomer gum in a solvent; and adding a silane compound to said gum solution said silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3; with the proviso that said fluoroelastomer gum and -silane solution be devoid of metallic oxide.
Claim 2
Independent Claim
114 words
A method for preparing fluoroelastomer film composition solutions including the steps of: dissolving a fluoroelastomer gum in a solvent; and adding a silane compound to said gum solution said silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3; with the proviso that said fluoroelastomer gum and -silane solution be devoid of metallic oxide.
Claim 3
Independent Claim
125 words
A method for adhering fluoroelastomer film compositions, devoid of metallic oxides, to substrates comprising the steps of: dissolving a fluoroelastomer gum in a solvent; and adding a silane compound to said gum solution said silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3; coating said substrate with said fluoroelastomer gum-silane solution; and evaporating said solvent and leaving a film firmly adhered to said substrate.
Claim 4
Independent Claim
125 words
A method for adhering fluoroelastomer film compositions, devoid of metallic oxides, to substrates comprising the steps of: dissolving a fluoroelastomer gum in a solvent; and adding a silane compound to said gum solution said silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3; coating said substrate with said fluoroelastomer gum-silane solution; and evaporating said solvent and leaving a film firmly adhered to said substrate.
Claim 5
Independent Claim
30 words
A method, as set forth in claims 1 or 2, wherein said silane compound is H 2 N(CH 2 ) 2 HN(CH 2 ) 3 Si(OCH 3 ) 3 .
Claim 6
Independent Claim
16 words
A method, as set forth in claims 1 or 2, wherein said silane compound is ##STR3##
Claim 7
Independent Claim
30 words
A method, as set forth in claims 1 or 2, wherein the amount of silane compound employed ranges from about 0.1 to about 10 parts per 100 parts of rubber.
Claim 8
Dependent Claim
81 words
A novel fluoroelastomer film composition comprising: a fluoroelastomer gum; and a silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3.
Claim 9
Dependent Claim
81 words
A novel fluoroelastomer film composition comprising: a fluoroelastomer gum; and a silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3.
Claim 10
Dependent Claim
31 words
A novel fluoroelastomer film composition, as set forth in claim 6, wherein said silane compound is H 2 N(CH 2 ) 2 HN(CH 2 ) 3 Si(OCH 3 ) 3 .
Claim 11
Dependent Claim
17 words
A novel fluoroelastomer film composition, as set forth in claim 6, wherein said silane compound is ##STR4##
Claim 12
Dependent Claim
31 words
A novel fluoroelastomer film composition, as set forth in claim 6, wherein the amount of silane compound employed ranges from about 0.1 to about 10 parts per 100 parts of fluoroelastomer.
Claim 13
Dependent Claim
88 words
A novel fluoroelastomer solution comprising: a fluoroelastomer gum; a silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3; and a solvent for said fluoroelastomer and gum solution.
Claim 14
Dependent Claim
88 words
A novel fluoroelastomer solution comprising: a fluoroelastomer gum; a silane compound having the formula RCH 2 CH 2 CH 2 SiR' 3-n (OR") n , where R is an organofunctional group selected from the group consisting of amine and epoxy molecules; R' is a simple alkyl group having about one to five carbon atoms; OR" is a hydrolyzable alkoxy group, R" being an alkyl group having about one to four carbon atoms and n is 1, 2 or 3; and a solvent for said fluoroelastomer and gum solution.
Claim 15
Dependent Claim
30 words
A novel fluoroelastomer solution, as set forth in claim 10, wherein said silane compound is H 2 N(CH 2 ) 2 HN(CH 2 ) 3 Si(OCH 3 ) 3 .
Claim 16
Dependent Claim
16 words
A novel fluoroelastomer solution, as set forth in claim 10, wherein said silane compound is ##STR5##
Claim 17
Dependent Claim
30 words
A novel fluoroelastomer solution, as set forth in claim 10, wherein the amount of silane compound employed ranges from about 0.1 to about 10 parts per 100 parts of fluoroelastomer.
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) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |