US4968757A
Expired / Lapsed
US
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Soluble silicone-imide copolymers
Assignee: Shin Etsu MicroSi Inc
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Filing: 1987-02-06
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Granted: 1990-11-06
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Expires: 2007-02-06
Abstract
Abstract There is provided a siloxane-imide copolymer composition having at least one polymeric block with a low glass transition temperature and at least one polymeric block with a high glass transition temperature. Preferred compositions have the general formula ##STR1##
Inventors
- 👤 Chung J. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:57
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/452; C08G77/455; C08G73/00; C08G73/06; C08G73/10; C08G73/1057; C08G73/106; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31721
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
142 words
An article of manufacture comprising: (a) a substrate, having coated thereon, (b) a diglyme soluble siloxane-imide copolymer composition having the general formula ##STR32## where each Ar is an independently selected aromatic radical; R is a substituted or unsubstituted hydrocarbylene radical or a radical of the formula--Q--Z--R 3 --, where Q is a substituted or unsubstituted aromatic group, Z is--0--, --S--, ##STR33## and R 3 is a substituted or unsubstituted hydrocarbylene; each R 1 is an independently selected substituted or unsubstituted hydrocarbyl radical; R 2 is a radical selected from the group consisting of ##STR34## where R 4 is an alkyl radical having from 1 to 9 carbon atoms and R 5 is an alkyl radical having from 1 to 4 carbon atoms; Y is oxygen or sulfur, and a, b, c and n are all integers equal to or greater than 1.
Claim 2
Dependent Claim
142 words
An article of manufacture comprising: (a) a substrate, having coated thereon, (b) a diglyme soluble siloxane-imide copolymer composition having the general formula ##STR32## where each Ar is an independently selected aromatic radical; R is a substituted or unsubstituted hydrocarbylene radical or a radical of the formula--Q--Z--R 3 --, where Q is a substituted or unsubstituted aromatic group, Z is--0--, --S--, ##STR33## and R 3 is a substituted or unsubstituted hydrocarbylene; each R 1 is an independently selected substituted or unsubstituted hydrocarbyl radical; R 2 is a radical selected from the group consisting of ##STR34## where R 4 is an alkyl radical having from 1 to 9 carbon atoms and R 5 is an alkyl radical having from 1 to 4 carbon atoms; Y is oxygen or sulfur, and a, b, c and n are all integers equal to or greater than 1.
Claim 3
Dependent Claim
12 words
The article of claim 1 wherein said substrate is an electronic device.
Claim 4
Dependent Claim
48 words
The composition of claim 1 wherein at least one Ar has a benzene nucleus, naphthalene nucleus or a nucleus of the formula ##STR35## where m is 0 or l and E is --O--, --S--, ##STR36## or --CyH 2y , where y is an integer from 1 to 8.
Claim 5
Dependent Claim
50 words
The composition of claim 1 wherein at least one Ar has the formula ##STR37## where G is phenylene or a group of the formula ##STR38## where m is O or l and E is --O--, --S--, ##STR39## or --CyH 2y , where y is an integer from 1 to 8.
Claim 6
Dependent Claim
15 words
The composition of claim 1 wherein at least one Ar group has the formula ##STR40##
Claim 7
Dependent Claim
12 words
The composition of claim 1 wherein R is a lower alkylene radical.
Claim 8
Dependent Claim
21 words
The composition of claim 8 wherein R 1 is independently selected from methyl, ethyl, propyl, butyl, phenyl, vinyl and 3,3,3-trifluoropropyl radicals.
Claim 9
Dependent Claim
14 words
The composition of claim 8 wherein n is an integer from 5 to 100.
Claim 10
Dependent Claim
9 words
The composition of claim 8 wherein Y is oxygen.
Claim 11
Dependent Claim
24 words
The composition of claim 8 wherein R 4 has from 1 to 3 carbon atoms and R 5 has 1 or 2 carbon atoms.
Claim 12
Dependent Claim
14 words
The composition of claim 8 wherein there is included at least one photosensitive radical.
Claim 13
Dependent Claim
18 words
The composition of claim 11 wherein said photosensitive radicals are acrylates, cinnamates 2,3-diphenylcylopropenol esters, or a mixture thereof.
References Cited (Backward Citations)
US3325450A
Cited
US4030948A
Cited
US4140572A
Cited
US4395527A
Cited
US4331799A
Cited
US4586997A
Cited
US4670497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |