US4714751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinkable resin, photosensitive recording material based on this crosslinkable resin, and production of a lithographic printing plate using this photosensitive recording material
Assignee: BASF SE
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Filing: 1985-12-18
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Granted: 1987-12-22
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Expires: 2005-12-18
Abstract
Abstract Oligomeric resins are crosslinkable by polymerization, soluble or dispersible in aqueous alkaline solutions, preferably contain more than 2 (meth)acryloyl groups and free carboxyl groups and are prepared by a special process. Photosensitive, photopolymerizable and crosslinkable recording materials for optical information fixing are based on these oligomeric resins, and lithographic printing plates are produced by a process in which the novel photosensitive recording materials are used.
Inventors
- 👤 Gunnar Schornick
- 👤 Albert Elzer
- 👤 Reiner Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08F299/028; C08G; C08G59/00; C08G59/02; C08G59/12; C08G59/14; C08G59/1494; C08G59/18; C08G59/40; C08G59/42; C08G59/4246; C08G59/4269; C08G59/4292
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
109 words
A crosslinkable oligomeric resin which is soluble or dispersible in an aqueous alkaline solution, contains acryloyl and/or methacryloyl groups and free carboxyl groups and has a mean molecular weight (number average) of from about 1,000 to 10,000 and an acid number of from 50 to 150, obtained by reacting a diol or polyol compound containing one or more (meth)acryloyl groups with a polyfunctional carboxylic acid or a cyclic anhydride of a polyfunctional carboxylic acid, with formation of an acidic partial ester of the carboxylic acid, and then subjecting some of the free carboxyl groups of the resulting reaction product to a chain-extending reaction with a diepoxide and/or a polyepoxide.
Claim 2
Dependent Claim
109 words
A crosslinkable oligomeric resin which is soluble or dispersible in an aqueous alkaline solution, contains acryloyl and/or methacryloyl groups and free carboxyl groups and has a mean molecular weight (number average) of from about 1,000 to 10,000 and an acid number of from 50 to 150, obtained by reacting a diol or polyol compound containing one or more (meth)acryloyl groups with a polyfunctional carboxylic acid or a cyclic anhydride of a polyfunctional carboxylic acid, with formation of an acidic partial ester of the carboxylic acid, and then subjecting some of the free carboxyl groups of the resulting reaction product to a chain-extending reaction with a diepoxide and/or a polyepoxide.
Claim 3
Dependent Claim
21 words
A crosslinkable, oligomeric resin according to claim 1, which contains on average about 2.1-8 acrylic and/or methacrylic double bonds per molecule.
Claim 4
Dependent Claim
18 words
A crosslinkable, oligomeric resin according to claim 1, which has an acid number of from 60 to 120.
Claim 5
Dependent Claim
21 words
A crosslinkable, oligomeric resin according to claim 1, wherein the mean molecular weight (number average) is from about 1,500 to 6,000.
Claim 6
Dependent Claim
38 words
A crosslinkable, oligomeric resin according to claim 1, wherein the (meth)acryloyl-containing diol or polyol compound is a reaction product of an aliphatic, cycloaliphatic or aromatic di- or polyepoxide with an equivalent amount of acrylic acid and/or methacrylic acid.
Claim 7
Dependent Claim
25 words
A crosslinkable, oligomeric resin according to claim 1, wherein the polybasic carboxylic acid or derivative thereof is a dicarboxylic acid or a cyclic carboxylic anhydride.
Claim 8
Dependent Claim
42 words
A crosslinkable, oligomeric resin according to claim 1, wherein an aliphatic or aromatic diglycidyl compound and/or an aliphatic or aromatic triglycidyl compound is or are used for the conversion of the free carboxyl groups of the reaction product obtained as an intermediate.
Claim 9
Dependent Claim
79 words
A crosslinkable, oligomeric resin according to claim 1, wherein, in its preparation, virtually all hydroxyl groups of the (meth)acryloyl-containing diol or polyol compound are reacted with the polyfunctional carboxylic acid or the cyclic anhydride of a polyfunctional carboxylic acid, and the free carboxyl groups of the resulting reaction product are reacted with the di- and/or polyepoxide in amounts such that the ratio of the number equivalents of COOH groups to that of glycidyl groups is from 1:0.8 to 1:0.2.
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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) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |