US5028668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adducts of metabrominated phenols and polyfunctional epoxides
Assignee: Huntsman Advanced Materials Americas LLC
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Filing: 1990-07-06
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Granted: 1991-07-02
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Expires: 2010-07-06
Abstract
Abstract Adducts of metabrominated monophenols such as 3,5-dibromo-2,4,6-trimethylphenol and multifunctional epoxides such as cresol-formaldehyde epoxy novolac resins are disclosed to be useful in formulations for encapsulating electronic components.
Inventors
- 👤 Chun S. Wang
- 👤 Abel Mendoza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:01
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1444; C08G59/145; C08G59/18; C08G59/20; C08G59/32; C08G59/36; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40; H10; H10W; H10W74/00; H10W74/40; H10W74/47
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
55 words
A mixture comprising (A) a glycidyl ether of a metabrominated monophenol and (B) a polyepoxide having an average of more than one vicinal epoxide group per molecule; wherein components (A) and (B) are employed in quantities which provide the resultant mixture with a bromine content of from about 2 to about 20 percent by weight.
Claim 2
Dependent Claim
55 words
A mixture comprising (A) a glycidyl ether of a metabrominated monophenol and (B) a polyepoxide having an average of more than one vicinal epoxide group per molecule; wherein components (A) and (B) are employed in quantities which provide the resultant mixture with a bromine content of from about 2 to about 20 percent by weight.
Claim 3
Dependent Claim
33 words
A mixture of claim 1 wherein components (A) and (B) are employed in quantities which provide the resultant mixture with a bromine content of from about 5 to about 15 percent by weight.
Claim 4
Dependent Claim
33 words
A mixture of claim 2 wherein components (A) and (B) are employed in quantities which provide the resultant mixture with a bromine content of from about 7 to about 12 percent by weight.
Claim 5
Dependent Claim
37 words
A mixture of claim 3 wherein component (A) is a glycidyl ether of 3,5-dibromo-2,4,6-trimethylphenol, 3-bromo-2,4,6-trimethylphenol, 3,5-dibromophenol, 3-bromophenol, 3-bromo-2,4,5,6-tetramethylphenol, 3,5-dibromo-2,4,6-triethylphenol, 3-bromo-2,4,6-triethylphenol or a combination thereof and component (B) is an epoxy novolac resin or a triglycidylether of tri(hydroxyphenyl)methane.
Claim 6
Dependent Claim
23 words
A mixture of claim 4 wherein component (A) is a glycidyl ether of 3,5-dibromo-2,4,6-trimethylphenol and component (B) is a cresol-formaldehyde epoxy novolac resin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |