US3884702A
Expired / Lapsed
US
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Photosensitive polyamide composition
Assignee: Unitika Ltd
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Filing: 1972-12-14
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Granted: 1975-05-20
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Expires: 1992-12-14
Abstract
Abstract A photosensitive polyamide composition comprising a polyamide having pendant sulfonate salt groups, an unsaturated compound having at least two polymerizable ethylenic double bonds and a photoinitiator. A water-developable printing plate made therefrom.
Inventors
- 👤 Akio Koshimo
- 👤 Kosuke Tomita
- 👤 Kunihiko Takagi
- 👤 Minoru Mitsui
- 👤 Kunihiro Isikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:28
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/04; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; G03F7/037; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/118; Y10S430/12; Y10S430/122
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
71 words
A PHOTOSENSITIVE POLYAMIDE COMPOSITION COMPRISING AT LEAST ONE NON-PHOTOSENSITIVE POLYAMIDE COPOLYMER, HAVING A MOLECULAR WEIGHT OF FROM 2,000 TO 40,000, CONTAINING 2 TO 50 MOL PRECENT OF A MONOMER HAVING PENDENT SULFONATE SALT GROUPS WITH THE AMOUNT OF SULFONATE SALT GROUP-CONTAINING COMONOMER BEING SUFFICIENT TO IMPART WATER SOLUBILITY OR DISPERSIBILITY TO THE POLYAMIDE, AT LEAST ONE UNSUBSTURATED COMPOUND HAVING AT LEAST TWO POLYMERIZABLE ETHYLENIC DOUBLE BONDS AND AT LEAST ONE PHOTOINITIATOR.
Claim 2
Dependent Claim
71 words
A PHOTOSENSITIVE POLYAMIDE COMPOSITION COMPRISING AT LEAST ONE NON-PHOTOSENSITIVE POLYAMIDE COPOLYMER, HAVING A MOLECULAR WEIGHT OF FROM 2,000 TO 40,000, CONTAINING 2 TO 50 MOL PRECENT OF A MONOMER HAVING PENDENT SULFONATE SALT GROUPS WITH THE AMOUNT OF SULFONATE SALT GROUP-CONTAINING COMONOMER BEING SUFFICIENT TO IMPART WATER SOLUBILITY OR DISPERSIBILITY TO THE POLYAMIDE, AT LEAST ONE UNSUBSTURATED COMPOUND HAVING AT LEAST TWO POLYMERIZABLE ETHYLENIC DOUBLE BONDS AND AT LEAST ONE PHOTOINITIATOR.
Claim 3
Dependent Claim
66 words
A photosensitive polyamide composition as claimed in claim 1 comprising 30 to 99 percent by weight of said at least one polyamide having pendant sulfonate groups, 1 to 70 percent by weight of said at least one unsaturated compound having at least two polymerizable ethylenic double bonds and 0.01 to 10 percent by weight of said at least one photoinitiator based on the total composition weight.
Claim 4
Dependent Claim
45 words
A photosensitive polyamide composition as claimed in claim 1 wherein said polyamide is obtained by reacting 50 to 98 mol percent of at least one polyamide-forming reactant with 2 to 50 mol percent of at least one triazine ring-containing compound represented by the following formula:
Claim 5
Dependent Claim
48 words
A photosensitive polyamide composition as claimed in claim 3 wherein said triazine ring-containing compound is at least one member selected from the group consisting of 2,4-diphenoxy-6-(p-sodium sulfo)phenylamino-s-triazine, 2,4-diphenoxy-6-(p-potassium sulfo)phenylamino-s-triazine, 2-p-hydroxy-4-phenoxy-6-(p-sodium sulfo)phenylamino-s-triazine, 2-hydroxy-4-phenoxy-6-(p-potassium sulfo)phenylamino-s-triazine, 2,4-diphenoxy-6-(p-sodium sulfo)phenoxy-s-triazine, 2,4-diphenoxy-6-(p-potassium sulfo)phenoxy-s-triazine, 2,4-diphenoxy-6-( Beta -(sodium sulfo) ethyoamino)-s-triazine and 2,4-diphenoxy-6-( Beta -(potassium sulfo) ethylamino)-s-triazine.
Claim 6
Dependent Claim
63 words
A photosensitive polyamide composition as claimed in claim 1 wherein said polyamide is obtained by reacting 50 to 98 mol percent of an equi-molar mixture of mono-amino carboxylic acid and diamine-dicarboxylic acid or their amide-forming derivatives, and 2 to 50 mol percent of at least one sulfonate selected from the group consisting of aromatic and aliphatic sulfonate salts containing two amide-forming functional groups.
Claim 7
Dependent Claim
18 words
A photosenstive polyamide composition as claimed in claim 5 wherein the sulfonate salt is an alkali metal sulfonate.
Claim 8
Dependent Claim
36 words
A photosensitive polyamide composition as claimed in claim 5 wherein the sulfonate salt is at least one member selected from the group consisting of sodium-3,5-dicarboxybenzene sulfonate, potassium-3,5-dicarboxybenzenesulfonate, sodium-3,5-dicarbomethoxybenzene sulfonate, potassium-3,5-dicarbomethoxybenzene sulfonate, sodium-3,5-dicarbomethoxymethylbenzene sulfonate and potassium-3,5-dicarbomethyoxymethylbenzene sulfonate.
Claim 9
Dependent Claim
37 words
A photosensitive polyamide composition as claimed in claim 3 wherein the polyamide-forming reactant is at least one member selected from the group consisting of aminocaproic acid, epsilon-caprolactam, hexamethylene diammonium adipate, hexamethylene diammonium sebacate and m-xylylene diammonium adipate.
Claim 10
Dependent Claim
52 words
A photosensitive polyamide composition as claimed in claim 7 wherein the polyamide having pendant sulfonate salt groups is a copolyamide composed of 35 to 70 percent by weight of Nylon 6, 10 to 40 percent by weight of Nylon 66 and 15 to 50 percent by weight of poly(hexamethylene (5-sodium sulfo) isophthalamide).
Claim 11
Dependent Claim
26 words
A photosensitive polyamide composition as claimed in claim 1 wherein said at least one unsaturated compound is at least one compound expressed by the following formula
Claim 12
Dependent Claim
43 words
A photosensitive polyamide composition as claimed in claim 10 wherein said at least one unsaturated compound is at least one member selected from the group consisting of methylenebisacrylamide, hexamethylenebisacrylamide, hexamethylene bismethyacrylamide, cis- and trans-1,4-di(acryloylaminomethyl)cyclohexane, m-xylylenebisacrylamide, p-xylylenebisacrylamide, m-xylylenebismethacrylamide, p-xylylenebismethacrylamide, m-phenylenebismethacrylamide, p-phenylenebismethacrylamide, m-phenylenebisacrylamide and p-phenylenebisacrylamide.
Claim 13
Dependent Claim
34 words
A photosensitive polyamide composition as claimed in claim 1 wherein said at least one unsaturated compound having at least two polymerizable ethylenic double bOnds is at least one compound expressed by the following formula.
Claim 14
Dependent Claim
40 words
A photosenstive polyamide composition as claimed in claim 12 wherein said at least one unsaturated compound having at least two polymerizable double bonds is at least one member selected from the group consisting of O,N-diacryloyl-m-aminophenol, O,N-diacryloyl-p-aminophenol, O,N-dimethacryloyl-m-aminophenol and O, N-dimethacryloyl-p-aminophenol.
Claim 15
Dependent Claim
60 words
A photosensitive polyamide composition as claimed in claim 1 wherein said at least one unsaturated compound having at least two polymerizable ethylenic double bonds is at least one member selected from the group consisting of an Alpha , omega -bis-N-acrylated compound and an Alpha , omega -bis-N-methacrylated compound of a nylon oligomer having a terminal amino group at both ends.
Claim 16
Dependent Claim
38 words
A photosensitive polyamide composition as claimed in claim 14 wherein said at least one unsaturated compound having at least two polymerizable ethylenic double bonds is at least one member selected from the group consisting of 1,3-bis-acrylamido-6-oxo-7-azatridecane and 1,3-bis-methacrylamido-6-oxo-7-azatridecane.
Claim 17
Dependent Claim
38 words
A photosensitive polyamide composition as claimed in claim 1 wherein said at least one photoinitiator is at least one member selected from the group consisting of benzophenone, benzoin methyl ether, diphenyl azomethane, benzoyl peroxide, azobisisobutyronitrile and benzoyl benzophenone.
Claim 18
Dependent Claim
36 words
A photosensitive polyamide composition as claimed in claim 1 which further comprises a compound having one polymerizable ethylenic double bond in an amount of 1 to 50 percent by weight based on the total composition weight.
Claim 19
Dependent Claim
38 words
A photosensitive polyamide composition as claimed in claim 17 wherein said at least one compound having one polymerizable ethylenic double bond is at least one member selected from the group consisting of acrylamide, N-methylolacrylamide, N-t-butylacrylamide and diacetone acrylamide.
Claim 20
Dependent Claim
37 words
A photosensitive polyamide composition as claimed in claim 1 wherein said unsaturated compound having at least two polymerizable ethylenic double bonds is at least one member selected from the group consisting of tri-(N-acryloyl) hexahydrotriazine and tri(N-methacryloyl) hexahydrotriazine.
Claim 21
Dependent Claim
50 words
A photosensitive polyamide composition as claimed in claim 1 which further contains 0.005 to 2 percent by weight, based on the total composition weight, of at least one polymerization inhibitor selected from the group consisting of hydroquinone, Methylene Blue, gallic acid, n-propyl gallate, isoamyl gallate, 2,5-tert-butyl hydroquinone and Malachite Green.
Claim 22
Dependent Claim
29 words
A photosensitive polyamide composition as claimed in claim 5 wherein said aromatic and aliphatic sulfonate salts containing two amide forming groups are selected from compounds represented by the formulae:
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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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |