Patent US3861948A successfully refreshed from Google Patents.
US3861948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure sensitive adhesive tape
Assignee: Kendall Co
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Filing: 1973-11-12
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Granted: 1975-01-21
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Expires: 1993-11-12
Abstract
Abstract An adhesive tape comprising a flexible backing and and supported thereon a water-insoluble pressure sensitive adhesive polymers are made by copolymerizing ionic methacrylic or acrylic monomers of the quaternary or betaine type, with or without the presence of the corresponding unquaternized monomer, with certain alkyl acrylates.
Inventors
- 👤 Carlos M Samour
- 👤 Mildred C Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/30; C09J7/38; Y; Y10; Y10S; Y10S526/00; Y10S526/923; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2878; Y10T428/2887; Y10T428/2891; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
6 words
AN IONIC MONOMER HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
AN IONIC MONOMER HAVING THE FORMULA
Claim 3
Dependent Claim
65 words
An adhesive tape as claimed in claim 1 in which R1 has from 2 to 3 carbon atoms, R2 and R3 have from 1 to 2 carbon atoms, the average number of carbon atoms in the alkyl group of the alkyl acrylate is from 4 to 8, and the amount of ionic monomer is from 1 to 10% by weight of the total essential monomers.
Claim 4
Dependent Claim
100 words
at least one alkyl acrylate the molecules of which have up to 18 carbon atoms in the alkyl group, the average number of carbon atoms in such groups being from 4 to 14, the amount of said ionic monomer being from 0.5 to 20% by weight of the total essential monomers, except that when the amouunt of ionic monomer exceeds 10% by weight of the total essential monomers, the minimum average number of carbon atoms in the alkyl groups of the alkyl acrylate is 6 and increases progressively to 8 when the amount of ionic monomer reaches 20% by weight.
Claim 5
Dependent Claim
100 words
at least one alkyl acrylate the molecules of which have up to 18 carbon atoms in the alkyl group, the average number of carbon atoms in such groups being from 4 to 14, the amount of said ionic monomer being from 0.5 to 20% by weight of the total essential monomers, except that when the amouunt of ionic monomer exceeds 10% by weight of the total essential monomers, the minimum average number of carbon atoms in the alkyl groups of the alkyl acrylate is 6 and increases progressively to 8 when the amount of ionic monomer reaches 20% by weight.
Claim 6
Dependent Claim
100 words
AT LEAST ONE ALKYL ACRYLATE THE MOLECULES OF WHICH HAVE UP TO 18 CARBON ATOMS IN THE ALKYL GROUP, THE AVERAGE NUMBER OF CARBON ATOMS IN SUCH GROUPS BEING FROM 4 TO 14, THE AMOUNT OF SAID IONIC MONOMER BEING FROM 0.5 TO 20% BY WEIGHT OF THE TOTAL ESSENTIAL MONOMERS, EXCEPT THAT WHEN THE AMOUNT OF IONIC MONOMER EXCEEDS 10% BY WEIGHT OF THE TOTAL ESSENTIAL MONOMERS, THE MINIMUM AVERAGE NUMBER OF CARBON ATOMS IN THE ALKYL GROUPS OF THE ALKYL ACRYLATE IS 6 AND INCREASES PROGRESSIVELY TO 8 WHEN THE AMOUNT OF IONIC MONOMER REACHES 20% BY WEIGHT.
Claim 7
Dependent Claim
100 words
AT LEAST ONE ALKYL ACRYLATE THE MOLECULES OF WHICH HAVE UP TO 18 CARBON ATOMS IN THE ALKYL GROUP, THE AVERAGE NUMBER OF CARBON ATOMS IN SUCH GROUPS BEING FROM 4 TO 14, THE AMOUNT OF SAID IONIC MONOMER BEING FROM 0.5 TO 20% BY WEIGHT OF THE TOTAL ESSENTIAL MONOMERS, EXCEPT THAT WHEN THE AMOUNT OF IONIC MONOMER EXCEEDS 10% BY WEIGHT OF THE TOTAL ESSENTIAL MONOMERS, THE MINIMUM AVERAGE NUMBER OF CARBON ATOMS IN THE ALKYL GROUPS OF THE ALKYL ACRYLATE IS 6 AND INCREASES PROGRESSIVELY TO 8 WHEN THE AMOUNT OF IONIC MONOMER REACHES 20% BY WEIGHT.
References Cited (Backward Citations)
US3475363A
Cited
US3547950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |