US3928262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive adhesive compositions containing hydroxy-ethyl cellulose
Assignee: Teijin Ltd
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Filing: 1973-11-26
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Granted: 1975-12-23
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Expires: 1993-11-26
Abstract
Abstract An adhesive composition comprising, of the total composition of 100 parts by weight, 90-99 parts by weight on a tacky copolymer of an alkyl acrylate, the alkyl group of which contains 1 to 14 carbon atoms and the average number of which carbon atoms is 4 to 12, with a compound having a double bond and copolymerizable therewith, and 10-1 parts by weight of a hydroxyethyl cellulose.
Inventors
- 👤 Tomoyoshi Ono
- 👤 Yoshihiko Matsuguma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:44
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C08; C08L; C08L1/00; C08L1/02; C08L1/04; C08L2666/00; C08L2666/02; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31982
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
AN ADHESIVE COMPOSITION COMPRISING, OF THE TOTAL COMPOSITION OF 100 PARTS NY WEIGHT, 90-99 PARTS BY WEIGHT OF A TACKY COPOLYMER OBTAINED BY COPOLYMERIZING A. 75-95 MOL PERCENT OF AT LEAST ONE ALKYL ACRYLATE, THE ALKYL GROUP OF WHICH CONTAINS 1 TO 14 CARBON ATOMS AND THE AVERAGE NUMBER OF WHICH CORBON ATOMS IS 4 TO 12, OR A MIXTUE OF AT LEAST ONE CLASS OF SAID ALKYL ACRYLATE WITH METHYL METHACRYLATE AND/OR VINYL ACETATE IN A MOLAR RATIO OF 5 OR MORE TO 1; WITH N. 5-25 MOL PERCENT OF ACRYLIC ACID AND/OR METHACRYLIC ACID, AND 10-1 PARTS NY WEIGHT OF A HYDROXYETHYL CELLULOSE.
Claim 2
Dependent Claim
105 words
AN ADHESIVE COMPOSITION COMPRISING, OF THE TOTAL COMPOSITION OF 100 PARTS NY WEIGHT, 90-99 PARTS BY WEIGHT OF A TACKY COPOLYMER OBTAINED BY COPOLYMERIZING A. 75-95 MOL PERCENT OF AT LEAST ONE ALKYL ACRYLATE, THE ALKYL GROUP OF WHICH CONTAINS 1 TO 14 CARBON ATOMS AND THE AVERAGE NUMBER OF WHICH CORBON ATOMS IS 4 TO 12, OR A MIXTUE OF AT LEAST ONE CLASS OF SAID ALKYL ACRYLATE WITH METHYL METHACRYLATE AND/OR VINYL ACETATE IN A MOLAR RATIO OF 5 OR MORE TO 1; WITH N. 5-25 MOL PERCENT OF ACRYLIC ACID AND/OR METHACRYLIC ACID, AND 10-1 PARTS NY WEIGHT OF A HYDROXYETHYL CELLULOSE.
Claim 3
Dependent Claim
140 words
An adhesive composition of claim 1 wherein said copolymer is that obtained by copolymerizing a. 94 - 98 mol percent of at least one alkyl acrylate, the alkyl group of which contains 1 to 14 carbon atoms and the average number of which carbon atoms is 4 to 12, or a mixture of at least one class of said alkyl acrylate with a member selected from the group consisting of methyl methacrylate, vinyl acetate and mixtures thereof in a molar ratio of 5 or more to 1; b. 2 - 6 mol percent of a member selected from the group consisting of acrylic acid, methacrylic acid and a mixture thereof; and c. 0.002 - 0.05 mol percent of a compound selected from the group consisting of diallyl phthalate, ethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, trimethylolethane trimethacrylate and pentaerythritol tetra methacrylate.
Claim 4
Dependent Claim
13 words
An adhesive composition of claim 1 wherein said alkyl acrylate is 2-ethylhexyl acrylate.
References Cited (Backward Citations)
US2027436A
Cited
US2599576A
Cited
US3446767A
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US3400103A
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US3684749A
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US3535295A
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US3725122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |