US3661576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable compositions and articles
Assignee: Brady Corp
•
Filing: 1970-02-09
•
Granted: 1972-05-09
•
Expires: 1990-02-09
Abstract
Abstract Photopolymerizable articles and compositions incorporating ethylenically unsaturated polyhydroxy diester polyethers as the active photopolymerizable ingredient, more specifically, acrylic and methacrylic diesters of diepoxy polyethers derived from aromatic polyhydroxy compounds. The articles and compositions are useful for dry photoresist films, for the manufacture of etched printing plates, as resist materials for chemical milling, and other uses which may utilize a photoactive layer or stratum.
Inventors
- 👤 Edward N Crary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16; B32B27/32; B32B27/36; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/038; G03F7/0388; B32B2255/00; B32B2255/24; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/112
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
5 words
a polyether of the formula
Claim 2
Dependent Claim
17 words
A method of etching that includes the steps of exposing and developing the layer of claim 1.
Claim 3
Dependent Claim
26 words
an addiTion polymerization initiator activatable by actinic radiation for causing polymerization of the polyether through terminal ethylenically unsaturated groups at each end of the polyether compound.
Claim 4
Dependent Claim
26 words
an addition polymerization initiator activatable by actinic radiation for causing polymerization of the polyether through terminal ethylenically unsaturated groups at each end of the polyether compound.
Claim 5
Dependent Claim
27 words
an addition polymerization initiator activatable by actinic radiation for causing polymerization of the polyether through terminal ethylenically unsaturated groups at each end of the polyether compound; and
Claim 6
Dependent Claim
22 words
a dry photopolymerizable layer on one surface of the support layer consistIng of a. an ethylenically unsaturated polyhydroxy polyether of the formula
Claim 7
Dependent Claim
22 words
a cover layer over the dry photopolymerizable layer that is removable therefrom without delamination of the photopolymerizable layer from the support layer.
Claim 8
Dependent Claim
18 words
an organic thermoplastic film-former that is compatible with the polyether compound to form a clear dry film therewith.
Claim 9
Dependent Claim
4 words
A photopolymerizable composition comprising:
Claim 10
Dependent Claim
25 words
an addition polymerization initiator activatable by actinic radiation for causing polymerization of the polyether through terminal ethylenically unsaturated groups at each end of the polyether.
Claim 11
Dependent Claim
22 words
a cover layer over the dry photopolymerizable layer that is removable therefrom without delamination of the photopolymerizable layer from the support layer.
Claim 12
Dependent Claim
13 words
A photopolymerizable composition according to claim 3 wherein n 0 in the formula.
Claim 13
Dependent Claim
4 words
A photopolymerizable composition comprising:
Claim 14
Dependent Claim
13 words
A photopolymerizable composition according to claim 5 wherein n 1.3 in the formula.
Claim 15
Dependent Claim
4 words
A photopolymerizable composition comprising:
Claim 16
Dependent Claim
57 words
A photopolymerizable composition according to claim 7, wherein: the film-former is a cellulose ester; polyvinyl chloride homopolymer or copolymer; cellulose ether; polyethylene oxide of a polyglycol with a molecular weight over 4,000; polyvinyl acetal; polyformaldehyde; polystyrene; copolyester of a polymethylene glycol of 2 to 10 carbon atoms; polyacrylate; alpha-alkyl polyacrylate ester; or a methyl methacrylate-methyl acrylate copolymer.
Claim 17
Dependent Claim
6 words
A photopolymerizable article comprising, in combination:
Claim 18
Dependent Claim
57 words
A photopolymerizable article according to claim 9, wherein: the film-former is a cellulose ester; polyvinyl chloride homopolymer or copolymer; cellulose ether; polyethylene oxide of a polyglycol with a molecular weight over 4,000; polyvinyl acetal; polyformaldehyde; polystyrene; copolyester of a polymethylene glycol of 2 to 10 carbon atoms; polyacrylate; alpha-alkyl polyacrylate ester; or a methyl methacrylate-methyl acrylate copolymer.
Claim 19
Dependent Claim
6 words
A photopolymerizable article comprising, in combination:
Claim 20
Dependent Claim
57 words
A photopolymerizable article according to claim 11, wherein: the film-former is a cellulose ester; polyvinyl chloride homopolymer or copolymer; cellulose ether; polyethylene oxide of a polyglycol with a molecular weight over 4,000; polyvinyl acetal; polyformaldehyde; polystyrene; copolyester of a polymethylene glycol of 2 to 10 carbon atoms; polyacrylate; alpha-alkyl polyacrylate ester; or a methyl methacrylate-methyl acrylate copolymer.
Claim 21
Dependent Claim
26 words
A photopolymerizable composition according to claim 3 wherein n 0, m 1, R1 is a methyl group, R2 is a methyl group, and R3 is hydrogen.
Claim 22
Dependent Claim
26 words
A photopolymerizable article according to claim 9 wherein n 0, m 1, R1 is a methyl group, R2 is a methyl group, and R3 is hydrogen.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |