Patent US4871646A successfully refreshed from Google Patents.
US4871646A
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Polysilane compound and photosensitive composition
Assignee: Toshiba Corp
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Filing: 1988-05-13
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Granted: 1989-10-03
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Expires: 2008-05-13
Abstract
Abstract Disclosed are a polysilane containing a unit represented by the following formulas I, II, or III, and a photosensitive composition consisting of the polysilane. ##STR1##
Inventors
- 👤 Shizu Hayase
- 👤 Rumiko Horiguchi
- 👤 Yasunobu Onishi
- 👤 Toru Ushirogouchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:56
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; C; C08; C08G; C08G77/00; C08G77/60; C08L; C08L83/00; C08L83/16; G03F; G03F7/00; G03F7/004; G03F7/075; G03F7/0754
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
161 words
A polysilane containing at least one unit selected from the group consisting of units represented by the following formulas I, II, and III: ##STR79## wherein R 1 represents a substituted or nonsubstituted alkyl or aryl group and R 2 represents a substituted or nonsubstituted alkylene or arylene group; ##STR80## wherein R 3 to R 5 represent the following: R 3 : a substituted or nonsubstituted alkyl or aryl group; R 4 : An alkylene group having 1 to 10 carbon atoms; and R 5 : a halogenated alkyl group; ##STR81## wherein R 6 to R 11 represent the following: R 6 , R 9 and R 10 : an alkyl group having 1 to 10 carbon atoms or a substituted or nonsubstituted aryl group; R 7 and R 8 : hydrogen and an alkyl group having 1 to 10 carbon atoms or a substituted or nonsubstituted aryl group; and R 11 : an alkylene group having 1 to 5 carbon atoms.
Claim 2
Dependent Claim
161 words
A polysilane containing at least one unit selected from the group consisting of units represented by the following formulas I, II, and III: ##STR79## wherein R 1 represents a substituted or nonsubstituted alkyl or aryl group and R 2 represents a substituted or nonsubstituted alkylene or arylene group; ##STR80## wherein R 3 to R 5 represent the following: R 3 : a substituted or nonsubstituted alkyl or aryl group; R 4 : An alkylene group having 1 to 10 carbon atoms; and R 5 : a halogenated alkyl group; ##STR81## wherein R 6 to R 11 represent the following: R 6 , R 9 and R 10 : an alkyl group having 1 to 10 carbon atoms or a substituted or nonsubstituted aryl group; R 7 and R 8 : hydrogen and an alkyl group having 1 to 10 carbon atoms or a substituted or nonsubstituted aryl group; and R 11 : an alkylene group having 1 to 5 carbon atoms.
Claim 3
Dependent Claim
9 words
A photosensitive composition comprising a polysilane of claim 1.
Claim 4
Dependent Claim
91 words
A photosensitive composition comprising a polysilane containing at least one unit selected from the group of units represented by the following formulas I and II: ##STR82## wherein R 1 represents a substituted or nonsubstituted alkyl or aryl group and R 2 represents a substituted or nonsubstituted alkylene or arylene group; ##STR83## wherein R 3 to R 5 represent the following: R 3 : a substituted or nonsubstituted alkyl or aryl group; R 4 : An alkylene group having 1 to 10 carbon atoms; and R 5 : a halogenated alkyl group.
Claim 5
Dependent Claim
91 words
A photosensitive composition comprising a polysilane containing at least one unit selected from the group of units represented by the following formulas I and II: ##STR82## wherein R 1 represents a substituted or nonsubstituted alkyl or aryl group and R 2 represents a substituted or nonsubstituted alkylene or arylene group; ##STR83## wherein R 3 to R 5 represent the following: R 3 : a substituted or nonsubstituted alkyl or aryl group; R 4 : An alkylene group having 1 to 10 carbon atoms; and R 5 : a halogenated alkyl group.
Claim 6
Dependent Claim
14 words
A composition according to claim 3, further comprising a negative or positive type sensitizer.
Claim 7
Dependent Claim
24 words
A composition according to claim 4, wherein said sensitizer has sensitivity with respect to a g-line (wavelength): 436 nm) of a mercury emission spectrum.
Claim 8
Dependent Claim
18 words
A composition according to claim 5, wherein said sensitizer is bis (1-naphthoquinone-2-diazido-5-sulfonic acid)-2,3,4-trihydroxybenzophenone ester or tri(1-naphtoquinone-2-diazido-5-sulfonic acid)-2,3,4,4'-tetrahydroxybenzophenone ester.
Claim 9
Dependent Claim
28 words
A composition according to claim 4, wherein the content of said sensitizer is 5 to 100 parts by weight with respect to 100 parts by weight of polysilane.
Claim 10
Dependent Claim
12 words
A composition according to claim 3, further comprising an alkali soluble resin.
Claim 11
Dependent Claim
16 words
A composition according to claim 8, wherein said alkali soluble resin contains a phenolic hydroxyl group.
Claim 12
Dependent Claim
35 words
A composition according to claim 8, wherein the content of said alkali soluble resin is 5 to 100 parts by weight with respect to 100 parts by weight of the polysilane as a main component.
Claim 13
Dependent Claim
14 words
A polysilane according to claim 1, containing at least one unit of formula I.
Claim 14
Dependent Claim
13 words
A polysilane according to claim 1, containing at least one unit formula II.
Claim 15
Dependent Claim
14 words
A polysilane according to claim 1, containing at least one unit of formula III.
Claim 16
Dependent Claim
9 words
A photosensitive composition comprising the polysilane of claim 11.
Claim 17
Dependent Claim
9 words
A photosensitive composition comprising the polysilane of claim 12.
Claim 18
Dependent Claim
9 words
A photosensitive composition comprising the polysilane of claim 13.
References Cited (Backward Citations)
US3338869A
Cited
US4126527A
Cited
US4260780A
Cited
US4569953A
Cited
US4709054A
Cited
US4745169A
Cited
EP0231497A1
Cited
US4822716A
Cited
US4788127A
Cited
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) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |