US3725064A
Expired / Lapsed
US
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Photosensitive propargyl polymer composition and method of using
Assignee: GAF Chemicals Corp
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Filing: 1971-11-08
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Granted: 1973-04-03
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Expires: 1991-11-08
Abstract
Abstract A light-sensitive solvent soluble film-forming polymer containing a propargyl group is disclosed. The propargyl groupcontaining polymers can be used as a photoresist with or without a sensitizer. In another aspect of the disclosure, a sensitizerstabilizer comprising a xanthen-9-one or a thioxanthen-9-one is disclosed.
Inventors
- 👤 N Field
- 👤 H Freyermuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:13
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/14; G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C08F2810/00; C08F2810/30; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/122
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A composition according to claim 1, wherein said polymer is prepared by the reaction of propargyl alcohol with a copolymer of methyl vinyl ether and maleic anhydride.
Claim 2
Dependent Claim
11 words
A composition according to claim 2, wherein said sensitizer-stabilizer is thioxanthen-9-one.
Claim 3
Dependent Claim
11 words
A composition according to claim 2, wherein said sensitizer-stabilizer is xanthen-9-one.
Claim 4
Independent Claim
30 words
A method of producing a printing plate which comprises selectively exposing a supported layer of a light-sensitive solvent soluble film-forming polymer consisting of recurring structural units having the general formula
Claim 5
Dependent Claim
32 words
A method according to claim 5, wherein said polymer is prepared by the reaction of propargyl alcohol with a member of the group consisting of methyl vinyl ether-maleic anhydride copolymer and poly(methylacrylate).
Claim 6
Dependent Claim
13 words
A method according to claim 5, wherein said solvent is methyl ethyl ketone.
Claim 7
Dependent Claim
28 words
A method according to claim 5, wherein said supported layer of said polymer further includes as a sensitizer-stabilizer for said polymeR a member of the group consisting of
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |