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Patent US4144113A successfully refreshed from Google Patents.
US4144113A
Expired / Lapsed
US
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Adhesive composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1977-06-17
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Granted: 1979-03-13
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Expires: 1997-06-17
Abstract
Abstract An adhesive composition comprising (1) a polyolefin having therein at least one repeating unit containing a carbonyl group and (2) at least one of calcium chloride, magnesium chloride or a mixture thereof.
Inventors
- 👤 Atsuo Mori
- 👤 Taisuke Okita
- 👤 Shuji Kitamura
- 👤 Kozo Kotani
- 👤 Masaaki Hama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:39
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; C09J123/08; C08; C08K; C08K3/00; C08K3/16; C09J153/00; C08L; C08L2666/00; C08L2666/54
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
98 words
In a process for adhering materials using a film adhesive, the improvement comprising using as said adhesive an adhesive composition comprising (1) a copolymer of ethylene with an ethylenically unsaturated monomer containing a carbonyl group selected from the group consisting of vinyl acetate, vinyl propionate, vinyl benzoate, methyl-, ethyl-, propyl-, butyl-, 2-ethylhexyl-, cyclohexyl-, dodecyl- or octadecyl-acrylate or methacrylate, maleic anhydride, mono- or di-methyl, ethyl-, butyl-, cyclohexyl-, 2-ethylhexyl, dodecyl-, or octadecyl-maleate, N-vinyl pyrrolidone, N-vinyl caprolactam, acrylamide, a secondary vinyl carboxylic acid amide and glycidyl methacrylate and (2) at least one of calcium chloride, magnesium chloride or a mixture thereof.
Claim 2
Dependent Claim
98 words
In a process for adhering materials using a film adhesive, the improvement comprising using as said adhesive an adhesive composition comprising (1) a copolymer of ethylene with an ethylenically unsaturated monomer containing a carbonyl group selected from the group consisting of vinyl acetate, vinyl propionate, vinyl benzoate, methyl-, ethyl-, propyl-, butyl-, 2-ethylhexyl-, cyclohexyl-, dodecyl- or octadecyl-acrylate or methacrylate, maleic anhydride, mono- or di-methyl, ethyl-, butyl-, cyclohexyl-, 2-ethylhexyl, dodecyl-, or octadecyl-maleate, N-vinyl pyrrolidone, N-vinyl caprolactam, acrylamide, a secondary vinyl carboxylic acid amide and glycidyl methacrylate and (2) at least one of calcium chloride, magnesium chloride or a mixture thereof.
Claim 3
Dependent Claim
19 words
The process according to claim 1, wherein the ethylenically unsaturated monomer is vinyl acetate, ethyl acrylate or glycidyl methacrylate.
Claim 4
Dependent Claim
25 words
The process according to claim 1, wherein the calcium chloride and the magnesium chloride are in the form of the anhydride or the hydrate thereof.
Claim 5
Dependent Claim
14 words
The process according to claim 1, wherein the calcium chloride is anhydrous calcium chloride.
Claim 6
Dependent Claim
37 words
The process according to claim 1, wherein the amount of the calcium chloride, the magnesium chloride or the mixture thereof ranges from about 0.01 to 70% by weight based on the total weight of said adhesive composition.
Claim 7
Dependent Claim
27 words
The process according to claim 5, wherein the amount of the calcium chloride, the magnesium chloride or the mixture thereof ranges from 0.1 to 20% by weight.
Claim 8
Dependent Claim
27 words
The process according to claim 6, wherein the amount of the calcium chloride, the magnesium chloride or the mixture thereof ranges from 0.1 to 10% by weight.
References Cited (Backward Citations)
US3764458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |