US4092173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic elements coated with protective overcoats
Assignee: Eastman Kodak Co
•
Filing: 1976-11-01
•
Granted: 1978-05-30
•
Expires: 1996-11-01
Abstract
Abstract Photographic elements, such as still films, motion picture films, paper prints, microfiche, and the like, are provided with a protective overcoat layer which is permanently bonded to the element and serves to protect it from abrasion and scratches. The protective overcoat is formed by coating the element with a radiation-curable composition, comprising an acrylated urethane, an aliphatic ethylenically-unsaturated carboxylic acid and a multifunctional acrylate, and irradiating the coating to bond it to the element and cure it to form a transparent, flexible, scratch-resistant, cross-linked polymeric layer. Protective overcoat layers can be applied to the image-bearing side of the element or to the support side of the element or to both sides.
Inventors
- 👤 Carl Peter Novak
- 👤 Edward Dixon Morrison
- 👤 Gerald Martin Leszyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
G; G03; G03C; G03C11/00; G03C11/08; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/107
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
97 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) a protective overcoat layer which is permanently bonded to at least one side of said element; said protective overcoat layer having been formed by (a) coating said element with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, crosslinked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
Claim 2
Dependent Claim
97 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) a protective overcoat layer which is permanently bonded to at least one side of said element; said protective overcoat layer having been formed by (a) coating said element with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, crosslinked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
Claim 3
Dependent Claim
98 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) a protective overcoat layer which is permanently bonded to the image-bearing side of said element; said protective overcoat layer having been formed by (a) coating said image-bearing side with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said image-bearing side.
Claim 4
Dependent Claim
98 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) a protective overcoat layer which is permanently bonded to the image-bearing side of said element; said protective overcoat layer having been formed by (a) coating said image-bearing side with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said image-bearing side.
Claim 5
Dependent Claim
98 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) a protective overcoat layer which is permanently bonded to the support side of said element; said protective overcoat layer having been formed by (a) coating said support side with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, crosslinked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaurated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said support side.
Claim 6
Dependent Claim
98 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) a protective overcoat layer which is permanently bonded to the support side of said element; said protective overcoat layer having been formed by (a) coating said support side with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, crosslinked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaurated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said support side.
Claim 7
Dependent Claim
112 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) protective overcoat layers which are permanently bonded to both the image-bearing side of said element and the support side of said element, each said protective overcoat layer having been formed by (a) coating the respective side with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, crosslinked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure it and bond it to the side of the element on which it is coated.
Claim 8
Dependent Claim
112 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) protective overcoat layers which are permanently bonded to both the image-bearing side of said element and the support side of said element, each said protective overcoat layer having been formed by (a) coating the respective side with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, crosslinked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure it and bond it to the side of the element on which it is coated.
Claim 9
Dependent Claim
115 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) protective overcoat layers which are permanently bonded to both the image-bearing side of said element and the support side of said element, each said protective overcoat layer having been formed by (a) coating the respective side with radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, (3) a multifunctional acrylate, and (4) a photoinitiator, and (b) subjecting said coating to ultraviolet radiation sufficient to cure it and bond it to the side of said element on which it is coated.
Claim 10
Dependent Claim
115 words
A photographic element comprising (1) a support, (2) at least one image-bearing layer, and (3) protective overcoat layers which are permanently bonded to both the image-bearing side of said element and the support side of said element, each said protective overcoat layer having been formed by (a) coating the respective side with radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, (3) a multifunctional acrylate, and (4) a photoinitiator, and (b) subjecting said coating to ultraviolet radiation sufficient to cure it and bond it to the side of said element on which it is coated.
Claim 11
Dependent Claim
48 words
A photographic element as claimed in claim 1 wherein said aliphatic ethylenically-unsaturated carboxylic acid has the formula: ##STR5## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 3 carbon atoms.
Claim 12
Dependent Claim
17 words
A photographic element as claimed in claim 1 wherein said aliphatic ethylenically-unsaturated carboxylic acid is acrylic acid.
Claim 13
Dependent Claim
87 words
A photographic element as claimed in claim 1 wherein said multifunctional acrylate has the formula: ##STR6## wherein each R 4 is independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 2 carbon atoms, and each R 5 is independently selected from the group consisting of an alkyl group of 1 to 6 carbon atoms and a radical of the formula ##STR7## in which R 6 is a hydrogen atom or an alkyl group of 1 to 2 carbon atoms.
Claim 14
Dependent Claim
15 words
A photographic element as claimed in claim 1 wherein said multifunctional acrylate is trimethylolpropane triacrylate.
Claim 15
Dependent Claim
15 words
A photographic element as claimed in claim 1 wherein said multifunctional acrylate is pentaerythritol tetraacrylate.
Claim 16
Dependent Claim
15 words
A photographic element as claimed in claim 1 wherein said multifunctional acrylate is neopentylglycol diacrylate.
Claim 17
Dependent Claim
16 words
A photographic element as claimed in claim 1 wherein said acrylated urethane has the formula: ##STR8##
Claim 18
Dependent Claim
24 words
A photographic element as claimed in claim 1 wherein said radiation-curable coating composition comprises an acrylated urethane, acrylic acid, trimethylolpropane triacrylate and neopentylglycol diacrylate.
Claim 19
Dependent Claim
40 words
A photographic element as claimed in claim 1 wherein said radiation-curable composition consists essentially of about 25% by weight acrylated urethane, about 10% by weight acrylic acid, about 35% by weight trimethylolpropane triacrylate and about 30% by weight neopentylglycol diacrylate.
Claim 20
Dependent Claim
29 words
A photographic element as claimed in claim 1 wherein said support is a cellulose triacetate support and said image-bearing layer is an imagewise-exposed and processed gelatino/silver halide emulsion layer.
Claim 21
Dependent Claim
29 words
A photographic element as claimed in claim 1 wherein said support is a poly(ethylene terephthalate) support and said image-bearing layer is an imagewise-exposed and processed gelatino/silver halide emulsion layer.
Claim 22
Dependent Claim
29 words
A photographic element as claimed in claim 1 wherein said support is a polyethylene-coated paper support and said image-bearing layer is an imagewise-exposed and processed gelatino/silver halide emulsion layer.
Claim 23
Independent Claim
61 words
A method of protecting a photographic element against abrasion and scratches which comprises (a) coating at least one side of said element with a radiation-curable coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
Claim 24
Independent Claim
61 words
A method of protecting a photographic element against abrasion and scratches which comprises (a) coating at least one side of said element with a radiation-curable coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
Claim 25
Independent Claim
67 words
A method of protecting a photographic element against abrasion and scratches which comprises (a) coating both sides of said element with a radiation-curable coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate and (b) subjecting each said coating to radiation sufficient to cure it and bond it to the side of the element on which it is coated.
Claim 26
Independent Claim
67 words
A method of protecting a photographic element against abrasion and scratches which comprises (a) coating both sides of said element with a radiation-curable coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate and (b) subjecting each said coating to radiation sufficient to cure it and bond it to the side of the element on which it is coated.
Claim 27
Dependent Claim
47 words
A method as claimed in claim 18 wherein said aliphatic ethylenically-unsaturated carboxylic acid has the formula: ##STR9## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 3 carbon atoms.
Claim 28
Dependent Claim
16 words
A method as claimed in claim 18 wherein said aliphatic ethylenically-unsaturated carboxylic acid is acrylic acid.
Claim 29
Dependent Claim
85 words
A method as claimed in claim 18 wherein said multifunctional acrylate has the formula: ##STR10## wherein each R 4 is independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 2 carbon atoms, and each R 5 is independently selected from the group consisting of an alkyl group of 1 to 6 carbon atoms and a radical of the formula: ##STR11## in which R 6 is hydrogen atom or an alkyl group of 1 to 2 carbon atoms.
Claim 30
Dependent Claim
15 words
A method as claimed in claim 18 wherein said acrylated urethane has the formula: ##STR12##
Claim 31
Dependent Claim
22 words
A method as claimed in claim 18 wherein said radiation-curable composition comprises an acrylated urethane, acrylic acid, trimethylolpropane triacrylate and neopentylglycol diacrylate.
Claim 32
Dependent Claim
34 words
A radiation-curable coating composition which is useful for the formation of protective overcoats on photographic elements, said composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid and (3) a multifunctional acrylate.
Claim 33
Dependent Claim
34 words
A radiation-curable coating composition which is useful for the formation of protective overcoats on photographic elements, said composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid and (3) a multifunctional acrylate.
Claim 34
Dependent Claim
49 words
A radiation-curable coating composition as claimed in claim 25 wherein said aliphatic ethylenically-unsaturated caboxylic acid has the formula: ##STR13## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 3 carbon atoms.
Claim 35
Dependent Claim
18 words
A radiation-curable coating composition as claimed in claim 25 wherein said aliphatic ethylenically-unsaturated carboxylic acid is acrylic acid.
Claim 36
Dependent Claim
88 words
A radiation-curable coating composition as claimed in claim 25 wherein said multifunctional acrylate has the formula: ##STR14## wherein each R 4 is independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 2 carbon atoms, and each R 5 is independently selected from the group consisting of an alkyl group of 1 to 6 carbon atoms and a radical of the formula: ##STR15## in which R 6 is a hydrogen atom or an alkyl group of 1 to 2 carbon atoms.
Claim 37
Dependent Claim
17 words
A radiation-curable coating composition as claimed in claim 25 wherein said acrylated urethane has the formula: ##STR16##
Claim 38
Dependent Claim
38 words
A radiation-curable coating composition as claimed in claim 25 wherein said acrylated urethane has the formula: ##STR17## said aliphatic ethylenically-unsaturated carboxylic acid is acrylic acid, and said multifunctional acrylate is a mixture of trimethylolpropane triacrylate and neopentylglycol diacrylate.
Claim 39
Dependent Claim
77 words
An element comprising a photographic support and a protective overcoat layer, said protective overcoat layer having been formed by (a) coating said element with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
Claim 40
Dependent Claim
77 words
An element comprising a photographic support and a protective overcoat layer, said protective overcoat layer having been formed by (a) coating said element with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said coating composition comprising (1) an acrylated urethane, (2) an aliphatic ethylenically-unsaturated carboxylic acid, and (3) a multifunctional acrylate, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
Claim 41
Dependent Claim
47 words
An element as claimed in claim 31 wherein said aliphatic ethylenically-unsaturated carboxylic acid has the formula: ##STR18## wherein R 1 , R 2 and R 3 are independently selected from the group consisting of a hydrogen atom and an alkyl group of 1 to 3 carbon atoms.
Claim 42
Dependent Claim
16 words
An element as claimed in claim 31 wherein said aliphatic ethylenically-unsaturated carboxylic acid is acrylic acid.
Claim 43
Dependent Claim
86 words
An element as claimed in claim 31 wherein said multifunctional acrylate has the formula: ##STR19## wherein each R 4 is independently seleted from the group consisting of a hydrogen atom and an alkyl group of 1 to 2 carbon atoms, and each R 5 is independently selected from the group consisting of an alkyl group of 1 to 6 carbon atoms and a radical of the formula ##STR20## in which R 6 is a hydrogen atom or an alkyl group of 1 to 2 carbon atoms.
Claim 44
Dependent Claim
14 words
An element as claimed in claim 31 wherein said multifunctional acrylate is trimethylolpropane triacrylate.
Claim 45
Dependent Claim
14 words
An element as claimed in claim 31 wherein said multifunctional acrylate is pentaerythritol tetraacrylate.
Claim 46
Dependent Claim
14 words
An element as claimed in claim 31 wherein said multifunctional acrylate is neopentylglycol diacrylate.
Claim 47
Dependent Claim
15 words
An element as claimed in claim 31 wherein said acrylated urethane has the formula: ##STR21##
Claim 48
Dependent Claim
23 words
An element as claimed in claim 31 wherein said radiation-curable coating composition comprises an acrylated urethane, acrylic acid, trimethylolpropane triacrylate and neopentylglycol diacrylate.
Claim 49
Dependent Claim
39 words
An element as claimed in claim 31 wherein said radiation-curable composition consists essentially of about 25% by weight acrylated urethane, about 10% by weight acrylic acid, about 35% by weight trimethylolpropane triacrylate and about 30% by weight neopentylglycol diacrylate.
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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |