US4612358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
UV-absorbing monomer and polymers thereof
Assignee: Roehm GmbH Darmstadt
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Filing: 1985-10-16
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Granted: 1986-09-16
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Expires: 2005-10-16
Abstract
Abstract UV absorbing compounds, susceptible to free-radical polymerization, of the formula ##STR1## wherein R is alkyl having from 4 to 12 carbon atoms of which not more than 6 are present in a linear chain, and in particular 2-(2'-hydroxy-3'-methacrylamidomethyl-5'-tert-octylphenyl)benzotriazole, and polymers thereof.
Inventors
- 👤 Siegmund Besecke
- 👤 Ralf Liebler
- 👤 Heinz-Juergen Hohage
- 👤 Guenter Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:16
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C07D249/20; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
64 words
A method for making an ultra-violet-absorbing copolymer which comprises free radically polymerizing at least 0.05 part by weight of a compound of the formula ##STR5## wherein R is alkyl having from 4 to 12 carbon atoms not more than 6 of which are present in an unbranched chain, with up to 99.95 parts by weight of at least one other vinyl or vinylidene monomer.
Claim 2
Independent Claim
64 words
A method for making an ultra-violet-absorbing copolymer which comprises free radically polymerizing at least 0.05 part by weight of a compound of the formula ##STR5## wherein R is alkyl having from 4 to 12 carbon atoms not more than 6 of which are present in an unbranched chain, with up to 99.95 parts by weight of at least one other vinyl or vinylidene monomer.
Claim 3
Dependent Claim
24 words
A method as in claim 1 wherein said other monomer consists of 50 percent or more by weight of a methacrylic monomer or styrene.
Claim 4
Dependent Claim
28 words
A method as in claim 1 wherein said other monomer or monomers are selected such that a polymer having a Vicat softening point over 100° C. is formed.
Claim 5
Dependent Claim
10 words
An ultra-violet-absorbing polymer made by the method of claim 1.
Claim 6
Dependent Claim
10 words
An ultra-violet-absorbing polymer made by the method of claim 2.
Claim 7
Dependent Claim
11 words
An ultra-violet absorbing polymer made by the method of claim 3.
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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |