US3971690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for adhesive bonding and coating
Assignee: Hoechst AG
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Filing: 1974-07-10
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Granted: 1976-07-27
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Expires: 1994-07-10
Abstract
Abstract A process is described for bonding or coating materials which comprises applying a molten olefin copolymer to a substrate. The copolymer is a terpolymer comprising about 70-90 parts by weight of ethylene, about 0.5-10 parts by weight of an ethylenically unsaturated carboxylic acid amide, and about 0.5 to 20 parts by weight of an ethylenically unsaturated carboxylic acid ester. The sum of the above parts by weight is equal to about 100.
Inventors
- 👤 Hans-Walter Birnkraut
- 👤 Werner Kluy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B27/00; B32B27/30; B32B15/00; B32B15/04; B32B15/043; B32B15/20; B32B27/32; C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
A process for bonding at least two materials together which comprises placing between said materials a lamina comprising a terpolymer containing about 70 to 90 parts by weight of ethylene; about 0.5 to 10 parts by weight of an ethylenically unsaturated carboxylic acid amide, there being only hydrogen on the amide nitrogen and about 0.5 to 20 parts by weight of an ethylenically unsaturated carboxylic acid ester; the sum of said parts by weight being about 100; and heating the terpolymer to a temperature sufficient to cause it to melt, thereby bonding said materials.
Claim 2
Dependent Claim
94 words
A process for bonding at least two materials together which comprises placing between said materials a lamina comprising a terpolymer containing about 70 to 90 parts by weight of ethylene; about 0.5 to 10 parts by weight of an ethylenically unsaturated carboxylic acid amide, there being only hydrogen on the amide nitrogen and about 0.5 to 20 parts by weight of an ethylenically unsaturated carboxylic acid ester; the sum of said parts by weight being about 100; and heating the terpolymer to a temperature sufficient to cause it to melt, thereby bonding said materials.
Claim 3
Dependent Claim
19 words
The process of claim 1 which is further characterized in that the terpolymer is heated under an elevated pressure.
Claim 4
Dependent Claim
38 words
The process of claim 1 in which the terpolymer comprises about 80 to 90 parts by weight of ethylene, about 2.5 to 8 parts by weight of the amide and about 7-15 parts by weight of the ester.
Claim 5
Dependent Claim
53 words
The process of claim 1 in which the amide is of an ethylenically unsaturated carboxylic acid having about 3 to 5 carbon atoms; and the ester is an alkyl ester of an ethylenically unsaturated carboxylic acid having about 3 to 5 carbon atoms, the ester moiety having about 1 to 8 carbon atoms.
Claim 6
Dependent Claim
27 words
The process of claim 1 in which the amide is acrylamide and the ester is of acrylic acid, the ester moiety having 2 to 5 carbon atoms.
Claim 7
Dependent Claim
18 words
the process of claim 1 in which the amide is an acrylamide and the ester is t-butyl acrylate.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |