US4144157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic and methacrylic self-adhesive composition and radiation method of making same
Assignee: Beiersdorf AG
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Filing: 1975-08-27
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Granted: 1979-03-13
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Expires: 1995-08-27
Abstract
Abstract A self-adhesive composition comprising a crosslinked copolymer of 0.01 to 5% by weight based on said composition of a compound taken from the class consisting of acrylic and methacrylic-[(2-alkoxy-2-phenyl-2-benzoyl) ethyl] esters and at least one monomer capable of producing a self-adhesive polymer. A method of preparation of the composition is also disclosed.
Inventors
- 👤 Gunter Guse
- 👤 Ernst Lukat
- 👤 Peter Jauchen
- 👤 Wolfdieter Lenck
- 👤 Hanns Pietsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:18
CPC Classifications
C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/08; C08; C08F; C08F246/00; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; C09J2301/00; C09J2301/30; C09J2301/302; Y; Y10; Y10S; Y10S522/00; Y10S522/904; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
56 words
A method for the preparation of a self-adhesive composition comprising copolymerizing 0.01 to 5% by weight based on said composition of a compound taken from the class consisting of acrylic and methacrylic [(2-alkoxy-2-phenyl-2-benzoyl) ethyl] esters with at least one monomer capable of producing a self-adhesive polymer, followed by crosslinking said composition by exposure to ultraviolet radiation.
Claim 2
Independent Claim
56 words
A method for the preparation of a self-adhesive composition comprising copolymerizing 0.01 to 5% by weight based on said composition of a compound taken from the class consisting of acrylic and methacrylic [(2-alkoxy-2-phenyl-2-benzoyl) ethyl] esters with at least one monomer capable of producing a self-adhesive polymer, followed by crosslinking said composition by exposure to ultraviolet radiation.
Claim 3
Dependent Claim
14 words
A method according to claim 1 wherein said exposure is for a few seconds.
Claim 4
Dependent Claim
14 words
A method according to claim 2 wherein said exposure is for approximately 1 second.
Claim 5
Dependent Claim
15 words
A method according to claim 1 wherein said alkoxy has 1 to 4 carbon atoms.
Claim 6
Dependent Claim
18 words
A method according to claim 1 wherein said compound is 0.15 to 2% by weight of said composition.
Claim 7
Dependent Claim
22 words
A method according to claim 1 wherein said monomer is taken from the class consisting of derivatives of acrylic and methacrylic acids.
Claim 8
Dependent Claim
24 words
A method according to claim 1 wherein said monomer is taken from the class consisting of esters of acrylic, methacrylic, maleic and fumaric acids.
Claim 9
Dependent Claim
33 words
A method according to claim 1 wherein said monomer is taken from the class consisting of alkyl esters of acrylic and methacrylic acids and mono- and dialkyl esters of maleic and fumaric acids.
Claim 10
Dependent Claim
15 words
A method according to claim 8 wherein said alkyl has 4 to 12 carbon atoms.
Claim 11
Dependent Claim
42 words
A method according to claim 1 wherein said composition also comprises up to about 25% by weight based on said composition of an additional monomer taken from the class consisting of lower alkyl acrylic and methacrylic esters, vinyl esters and vinyl aromates.
Claim 12
Dependent Claim
44 words
A method according to claim 1 wherein said composition also comprises up to about 15% by weight based on said composition of a reactive comonomer taken from the class consisting of acrylic acid, methacrylic acid, maleic acid, maleic anhydride, acrylamide, methacrylamide, acrylonitrile and methacrylonitrile.
Claim 13
Dependent Claim
8 words
The product of the method of claim 1.
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) | 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 |