US5070001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive mixture for producing positive or negative relief copies
Assignee: Hoechst AG
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Filing: 1987-10-23
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Granted: 1991-12-03
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Expires: 2007-10-23
Abstract
Abstract A light-sensitive mixture is disclosed which contains a) a compound having at least one acid-cleavable C-O-C bond, b) a compound which forms a strong acid on exposure and c) a binder which is insoluble in water but soluble in aqueous alkaline solutions and d) a compound having at least one polymerizable or light-crosslinkable olefinic double bond. The mixture is suitable for producing printing plates, relief copies and photoresists, becoming soluble in alkaline developers on short exposure and insoluble on prolonged exposure as a result of crosslinking.
Inventors
- 👤 Paul Stahlhofen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:19
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/09; G03F7/095; G03F7/0955; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/111
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
A light-sensitive mixture comprising: (a) a compound having at least one acid-cleavable C--O--C bond, present in an amount of 4 to 50 percent by weight, based on total solids; (b) a compound which forms a strong acid on exposure, present in an amount of about 0.5 to 20 percent by weight, based on total solids; (c) a binder which is insoluble in water but soluble in aqueous alkaline solutions, present in an amount of about b 30 to 90 percent by weight, based on total solids; and a monomeric compound having at least one polymerizable or light-crosslinkable olefinic double bond adjacent to a CO group, present in an amount of about 2 to 30 percent by weight, based on total solids.
Claim 2
Dependent Claim
121 words
A light-sensitive mixture comprising: (a) a compound having at least one acid-cleavable C--O--C bond, present in an amount of 4 to 50 percent by weight, based on total solids; (b) a compound which forms a strong acid on exposure, present in an amount of about 0.5 to 20 percent by weight, based on total solids; (c) a binder which is insoluble in water but soluble in aqueous alkaline solutions, present in an amount of about b 30 to 90 percent by weight, based on total solids; and a monomeric compound having at least one polymerizable or light-crosslinkable olefinic double bond adjacent to a CO group, present in an amount of about 2 to 30 percent by weight, based on total solids.
Claim 3
Dependent Claim
21 words
The light-sensitive mixture as claimed in claim 1, wherein the polymerizable compound (d) is an ester of acrylic or methacrylic acid.
Claim 4
Dependent Claim
21 words
The light-sensitive mixture as claimed in claim 1, wherein the light-crosslinkable compound (d) is a chalcone or a cinnamic acid derivative.
Claim 5
Dependent Claim
26 words
The light-sensitive mixture as claimed in claim 1, which contains 0.2 to 5 parts by weight of compound (d) per part by weight of compound (a).
Claim 6
Dependent Claim
29 words
The light-sensitive mixture as claimed in claim 1, wherein the compound (b) which forms a strong acid on exposure is a heterocyclic compound having at least one trihalomethyl group.
Claim 7
Dependent Claim
21 words
The light-sensitive mixture as claimed in claim 1, wherein compound (b) is an s-triazine substituted by at least one trichloromethyl group.
Claim 8
Dependent Claim
14 words
The light-sensitive mixture as claimed in claim 1, wherein binder (c) i a novolak.
Claim 9
Dependent Claim
61 words
A light-sensitive recording material comprising a base material and a light-sensitive layer comprising (a) a compound having at least one acid-cleavable C--O--C bond; (b) a compound which forms a strong acid on exposure; (c) a binder which is insoluble in water but soluble in aqueous alkaline solutions; and (d) a compound having at least one polymerizable or light-crosslinkable olefinic double bond.
Claim 10
Dependent Claim
61 words
A light-sensitive recording material comprising a base material and a light-sensitive layer comprising (a) a compound having at least one acid-cleavable C--O--C bond; (b) a compound which forms a strong acid on exposure; (c) a binder which is insoluble in water but soluble in aqueous alkaline solutions; and (d) a compound having at least one polymerizable or light-crosslinkable olefinic double bond.
Claim 11
Dependent Claim
15 words
A compound according to claim 1, consisting essentially of components a, b, c and d.
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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) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-02 | 2003-06-03 | 2003-12-03 | $7700.00 | Window Closed / Lapsed |