Patent US4914185A successfully refreshed from Google Patents.
US4914185A
Expired / Lapsed
US
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Adducts of metabrominated phenols and polyfunctional epoxides
Assignee: Huntsman Advanced Materials Americas LLC
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Filing: 1986-04-14
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Granted: 1990-04-03
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Expires: 2006-04-14
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
2026-11-10 01:15
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08G59/1444; 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
143 words
An electrical component encapsulated with a cured composition which comprises (I) an epoxy-containing composition selected from (A) a composition which comprises an adduct prepared by reacting (1) a metabromiated monophenol and (2) a multifunctional polyepoxide having an average of more than two vicinal epoxide groups per molecule; wherein components (1) and (2) are employed in quantities which provide a ratio of phenolic hydroxyl groups to epoxide groups of from about 0.05:1 to about 0.05:1; and (B) a mixture comprising (1) a glycidyl ether of a metabrominated monophenol and (2) a polyepoxide having an average of more than one vicinal epoxide group per molecule; wherein components (1) and (2) are employed in quantities which provide the resultant mixture with a bromine content of from about 2 to about 20 percent by weight; and (II) a curing amount of a curing agent for component (I).
Claim 2
Dependent Claim
143 words
An electrical component encapsulated with a cured composition which comprises (I) an epoxy-containing composition selected from (A) a composition which comprises an adduct prepared by reacting (1) a metabromiated monophenol and (2) a multifunctional polyepoxide having an average of more than two vicinal epoxide groups per molecule; wherein components (1) and (2) are employed in quantities which provide a ratio of phenolic hydroxyl groups to epoxide groups of from about 0.05:1 to about 0.05:1; and (B) a mixture comprising (1) a glycidyl ether of a metabrominated monophenol and (2) a polyepoxide having an average of more than one vicinal epoxide group per molecule; wherein components (1) and (2) are employed in quantities which provide the resultant mixture with a bromine content of from about 2 to about 20 percent by weight; and (II) a curing amount of a curing agent for component (I).
Claim 3
Dependent Claim
61 words
An electrical component of claim 1 wherein components (I-A-1) and (I-A-2) are employed in quantities which provide a ratio of phenolic hydroxyl groups to epoxide groups of from about 0.01:1 to about 0.35:1; and components (I-B-1) and (I-B-2) 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
61 words
An electrical component of claim 2 wherein components (I-A-1) and (I-A-2) are employed in quantities which provide a ratio of phenolic hydroxyl groups to epoxide groups of from about 0.1:1 to about 0.2:1; and components (I-B-1) and (I-B-2) are employed in quantities which provide the resultant mixture with a bromine content of from about 5 to about 12 percent by weight.
Claim 5
Dependent Claim
81 words
An electrical component of claim 3 wherein component (I-A-1) is 3,5-dibromo-2,4,6-trimethylphenol, 3-bromo-2,4,6-trimethylphenol, 3,5-dibromophenol, 3-bromophenol, 3-bromo-2,4,6-triethylphenol, 3-bromo2,4,6,-triethylphenol or a combination thereof; component (I-A-2) is an epoxy novolac resin, a triglycidylether of trihydroxyphenyl methane; component (I-B-1) is a glycidyl ether of any of the following 3,5,-dibromo2,4,6-trimethylphenol, 3-bromo-2,4,6-trimethylphenol, 3,5,-dibromophenol, 3-bromophenol, 3-bromo2,4,5,6-tetramethylphenol, 3,5-dibromo-2,4,6-triethylphenol, 3-bromo-2,4,6-triethylphenol or a combination thereof; component (I-B-2) is an epoxy novolac resin, a triglycidylether of tri(hydroxyphenyl)methane and component II is a material having an average of more than one phenolic hydroxyl groups.
Claim 6
Dependent Claim
43 words
An electrical component of claim 4 wherein component (I-A-1) is 3,5-dibromo-2,4,6-trimethylphenol; component (I-A-2) is a cresolformaldehyde epoxy novolac resin; component (I-A-1) is a glycidyl ether of 3,5-dibromo-2,4,6-trimethylphenol; component (I-B-2) is a cresol-formaldehyde epoxy novolac resin and component (II) is a phenol-formaldehyde novolac resin.
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