Patent US5272222A successfully refreshed from Google Patents.
US5272222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable resin compositions and electronic part protective coatings
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1992-05-28
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Granted: 1993-12-21
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Expires: 2012-05-28
Abstract
Abstract A curable resin composition comprising a mixture or cocondensate of a compound containing imide and alkoxysilyl groups and an organosilane or organopolysiloxane is shelf stable and cures into a film which is improved in heat resistance, mechanical strength, electrical properties, solvent resistance and adhesion to substrates and thus suitable as a protective film on electronic parts.
Inventors
- 👤 Hiroshige Okinoshima
- 👤 Hideto Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:50
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/47; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1057; C08G73/106; C08G77/00; C08G77/42; C08G77/452; C08G77/455; C08L; C08L79/00; C08L79/04; C08L79/08; C08L83/00; C08L83/04; C08L83/10; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/46; C08G77/04; C08G77/14; C08G77/16; C08G77/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A curable resin composition comprising a mixture or co-condensate of a compound of formula (I) and an organosilane or organopolysiloxane of formula (II), wherein said formula (I) compound is selected from the group consisting of structures (A), (B) and (C): ##STR35## and said organosilane or organopolysiloxane is of the following molecular formula: R.sup.4 A(R.sup.5 O).sub.b SiO.sub.(4-a-b)/2 (II) wherein R 4 and R 5 are independently selected from a hydrogen atom and substituted or unsubstituted monovalent hydrocarbon groups having 1 to 10 carbon atoms, letters a and b are numbers in the range: 0≦a≦3, 0<b≦4, and 0<a+b≦4.
Claim 2
Dependent Claim
96 words
A curable resin composition comprising a mixture or co-condensate of a compound of formula (I) and an organosilane or organopolysiloxane of formula (II), wherein said formula (I) compound is selected from the group consisting of structures (A), (B) and (C): ##STR35## and said organosilane or organopolysiloxane is of the following molecular formula: R.sup.4 A(R.sup.5 O).sub.b SiO.sub.(4-a-b)/2 (II) wherein R 4 and R 5 are independently selected from a hydrogen atom and substituted or unsubstituted monovalent hydrocarbon groups having 1 to 10 carbon atoms, letters a and b are numbers in the range: 0≦a≦3, 0<b≦4, and 0<a+b≦4.
Claim 3
Dependent Claim
33 words
The curable resin composition of claim 1 wherein the the compound of formula (I) and the organosilane or organopolysiloxane of formula (II) are mixed in a weight ratio of from 10/1 to 1/2.
Claim 4
Dependent Claim
152 words
The resin composition of claim 1 wherein said formula (II) compound is selected from the group consisting of: Si (OCH 3 ) 4 , Si (OC 2 H 5 ) 4 , Si (OC 3 H 7 ) 4 , Si (CH 3 ) (OCH 3 ) 3 , Si (C 6 H 5 ) (OCH 3 ) 3 , Si (CH 3 ) (OC 2 H 5 ) 3 , Si (C 6 H 5 ) (OC 2 H 5 ) 3 , Si (CH 3 ) 2 (OCH 3 ) 2 , Si (C 6 H 5 ) 2 (OCH 3 ) 2 , Si (CH 3 ) 2 (OC 2 H 5 ) 2 , Si (C 2 H 5 ) 2 (OH) 2 , Si (C 6 H 5 ) (OH) 2 , and ##STR36## wherein n' is an integer of from 1 to 50, and mixtures thereof.
Claim 5
Dependent Claim
29 words
The resin composition of claim 1 wherein said formula (I) compound is (A) and said formula (II) compound is Si(C 6 H 5 ) (OCH 3 ) 3 .
Claim 6
Dependent Claim
26 words
The resin composition of claim 1 wherein said formula (I) compound is (B) and said formula (II) compound is Si(CH 3 )(OCH 3 ) 3 .
Claim 7
Dependent Claim
26 words
The resin composition of claim 1 wherein said formula (I) compound is (C) and said formula (II) compound is Si(OC 2 H 5 ) 4 .
Claim 8
Dependent Claim
23 words
A protective coating for electronic parts obtained by curing the composition in any one of claims 1, 2, 3, or 4 to 6.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-20 | 1997-06-21 | 1997-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-20 | 2001-06-21 | 2001-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-20 | 2005-06-21 | 2005-12-21 | $7700.00 | Window Closed / Lapsed |