Patent US4268548A successfully refreshed from Google Patents.
US4268548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl chloride-plastisol having improved adhesion
Assignee: Bayer Pharma AG
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Filing: 1979-09-26
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Granted: 1981-05-19
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Expires: 1999-09-26
Abstract
Abstract What is disclosed are a method for coating or adhering a substrate material which comprises applying to said substrate material a plastisol composition comprising a polymer of vinyl chloride and then baking the composition onto the substrate material at a temperature between about 100° C. and 200° C., said plastisol composition further comprising from 0.05 to 5 percent, by weight of said plastisol composition, of an adhesion improver which is a compound or compounds having an azomethine group and a silane group and plastisol compositions for practising such a method.
Inventors
- 👤 Christian Burba
- 👤 Hans-Gunter Volland
- 👤 Norbert Esper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:41
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
97 words
A method which comprises applying to a substrate material a plastisol composition comprising a polymer of vinyl chloride and then baking the composition onto the substrate material at a temperature between about 100° C. and 200° C., said plastisol composition further comprising from 0.05 to 5 percent, by weight of said plastisol composition, of an adhesion improver which is a compound or compounds having an azomethine group and a silane group and wherein, if said azomethine group and said silane group are separately present in different compounds, then said compound having a silane group is an aminosilane.
Claim 2
Independent Claim
97 words
A method which comprises applying to a substrate material a plastisol composition comprising a polymer of vinyl chloride and then baking the composition onto the substrate material at a temperature between about 100° C. and 200° C., said plastisol composition further comprising from 0.05 to 5 percent, by weight of said plastisol composition, of an adhesion improver which is a compound or compounds having an azomethine group and a silane group and wherein, if said azomethine group and said silane group are separately present in different compounds, then said compound having a silane group is an aminosilane.
Claim 3
Dependent Claim
31 words
A method as in claim 1 wherein at least one compound having an azomethine group is present together with at least one aminosilane in a weight ratio between 10:90 and 90:10.
Claim 4
Dependent Claim
24 words
A method as in claim 1 wherein said adhesion improver is at least one compound having both an azomethine group and a silane group.
Claim 5
Dependent Claim
24 words
A method as in claim 3 wherein the compound having an azomethine group and a silane group is a Schiff base of an aminosilane.
Claim 6
Dependent Claim
59 words
A method as in claim 3, wherein the compound having an azomethine group and a silane group is a compound prepared by linking a Schiff base and a silane, each having a further reactive group therein, with a linking compound having a plurality of linking groups reactive with said further reactive groups of said Schiff base and said silane.
Claim 7
Dependent Claim
11 words
A method as in claim 1 wherein said substrate is metallic.
Claim 8
Dependent Claim
17 words
A method as in claim 6 wherein said metallic substrate is aluminum which has not been pretreated.
Claim 9
Dependent Claim
54 words
A plastisol composition comprising a polymer of vinyl chloride together with an adhesion improver which is a compound or compounds having an azomethine group and a silane group and wherein, if said azomethine group and said silane group are separately present in different compounds, then said compound having a silane group is an aminosilane.
Claim 10
Dependent Claim
54 words
A plastisol composition comprising a polymer of vinyl chloride together with an adhesion improver which is a compound or compounds having an azomethine group and a silane group and wherein, if said azomethine group and said silane group are separately present in different compounds, then said compound having a silane group is an aminosilane.
Claim 11
Dependent Claim
32 words
A plastisol composition as in claim 8 wherein at least one compound having an azomethine group is present together with at least one aminosilane in a weight ratio between 10:90 and 90:10.
Claim 12
Dependent Claim
25 words
A plastisol composition as in claim 8 wherein said adhesion improver is at least one compound having both an azomethine group and a silane group.
Claim 13
Dependent Claim
25 words
A plastisol composition as in claim 10 wherein the compound having an azomethine group and a silane group is a Schiff base of an aminosilane.
Claim 14
Dependent Claim
60 words
A plastisol composition as in claim 8 wherein the compound having an azomethine group and a silane group is a compound prepared by linking a Schiff base and a silane, each having a further reactive group therein, with a linking compound having a plurality of linking groups reactive with said further reactive groups of said Schiff base and said silane.
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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |