Patent US5763674A successfully refreshed from Google Patents.
US5763674A
Expired / Lapsed
US
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High molecular weight dibenzoylresorcinol UV absorbers
Assignee: General Electric Co
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Filing: 1996-12-09
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Granted: 1998-06-09
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Expires: 2016-12-09
Abstract
Abstract Novel dibenzoylresorcinol compositions capable of absorbing ultraviolet light having the formula <IMAGE> where Ar1 and Ar2 are independently substituted or unsubstituted monocyclic or polycyclic aryl groups, R is hydrogen, an aryl group, or a linear or branched alkyl chain having less than about 10 carbons, and Ar3 is an aryl group bearing at least one hydroxyl group. Methods of making the compositions are provided. The novel dibenzoylresorcinol compositions are methylene-bridged dibenzoylresorcinol derivatives having a phenol group on the bridging methylene and are compatible in coating compositions to improve the weatherability of thermoplastic substrates.
Inventors
- 👤 James Edward Pickett
- 👤 Amy Kathleen Simonian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:26
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/14; C07D251/24; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C07C49/84; C07C69/00; C07C69/007; C07D249/00; C07D249/16; C07D249/18; C07D249/20; C09; C09D; C09D7/00; C09D7/40; C09D7/48; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
54 words
A compound having the formula ##STR17## where Ar 1 and Ar 2 are independently substituted or unsubstituted monocyclic or polycyclic aryl groups, R 0 is hydrogen, an aryl group, or a linear or branched alkyl chain having less than 10 carbons, and Ar 3 is an aryl group bearing at least one hydroxyl group.
Claim 2
Dependent Claim
54 words
A compound having the formula ##STR17## where Ar 1 and Ar 2 are independently substituted or unsubstituted monocyclic or polycyclic aryl groups, R 0 is hydrogen, an aryl group, or a linear or branched alkyl chain having less than 10 carbons, and Ar 3 is an aryl group bearing at least one hydroxyl group.
Claim 3
Dependent Claim
34 words
A compound according to claim 1 where Ar 3 bearing at least one hydroxyl group, can be further substituted with additional hydroxyl groups, alkoxy groups, benzoyl groups, substituted benzoyl groups, benzotriazoles, or triazine groups.
Claim 4
Dependent Claim
23 words
A compound according to claim 1 where said composition has the formula ##STR18## where R 1 =R 2 =R 3 =R 4 =H.
Claim 5
Dependent Claim
27 words
A compound according to claim 1 where said composition has the formula ##STR19## where R 5 =CH 3 ; and R 2 =R 3 =R 4 =H.
Claim 6
Dependent Claim
26 words
A compound according to claim 1 where said composition has the formula ##STR20## where R 1 =H; R 6 =R 7 =t-butyl; and R 4 =H.
Claim 7
Dependent Claim
36 words
A compound according to claim 1 where said composition has the formula ##STR21## where R 1 =H and R 2 =H, and isomers of said formula where coupling occurs in a position bearing R 2 .
Claim 8
Dependent Claim
23 words
A compound according to claim 1 where said composition has the formula ##STR22## where R 1 =H and R 5 =CH 3 .
Claim 9
Dependent Claim
39 words
A compound according to claim 1 where said composition has the formula ##STR23## where R 8 =C 8 H 17 and R 2 =H and isomers of said formula where coupling occurs in a position bearing R 2 .
Claim 10
Dependent Claim
18 words
A compound according to claim 1 where said composition has the formula ##STR24## and isomers of said formula.
Claim 11
Dependent Claim
18 words
A compound according to claim 1 where said composition has the formula ##STR25## and isomers of said formula.
Claim 12
Dependent Claim
15 words
A compound according to claim 1 where said compound is useful for absorbing ultraviolet light.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-08 | 2001-12-08 | 2002-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-08 | 2005-12-08 | 2006-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-08 | 2009-12-08 | 2010-06-09 | $7700.00 | Window Closed / Lapsed |