US4407938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element with lactone polymer
Assignee: Konica Minolta Inc
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Filing: 1982-04-19
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Granted: 1983-10-04
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Expires: 2002-04-19
Abstract
Abstract A photographic element comprising a support having thereof at least one silver halide emulsion layer and at least one temporary barrier layer, said temporary barrier layer comprising a mixture of a lactone polymer with repetitive units represented by the formula (I): ##STR1## and a vinylidene chloride terpolymer represented by the formula (II): ##STR2## wherein R is a hydrogen atom, an alkyl or an aralkyl group; R 1 , R 2 and R 3 each is a hydrogen atom or a methyl group; n 1 is an integer of from 1 to 5, while n 2 is an integer of 1 or 2; A is a monomer unit of a copolymerizable ethylenically unsaturated acid or of the salt thereof, while B is a copolymerizable ethylenically unsaturated monomer unit; x represents from 50 to 99.5% by weight, y represents from 0.5 to 44.5% by weight, and z represents from 0 to 49.5% by weight.
Inventors
- 👤 Noboru Mizukura
- 👤 Mikio Koyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:25
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A photographic element comprising a support having thereof at least one silver halide emulsion layer and at least one temporary barrier layer, said temporary barrier layer comprising a mixture of a lactone polymer with repetitive units represented by the formula (I); ##STR11## and a vinylidene chloride terpolymer represented by the formula (II); ##STR12## wherein R is a hydrogen atom, an alkyl or an aralkyl group; R 1 , R 2 and R 3 each is a hydrogen atom or a methyl group; n 1 is an integer of from 1 to 5, while n 2 is an integer of 1 or 2; A is a monomer unit of a copolymerizable ethylenically unsaturated acid or of the salt thereof, while B is a copolymerizable ethylenically unsaturated monomer unit; x represents from 50 to 99.5% by weight, y represents from 0.5 to 44.5% by weight, and z represents from 0 to 49.5% by weight.
Claim 2
Dependent Claim
152 words
A photographic element comprising a support having thereof at least one silver halide emulsion layer and at least one temporary barrier layer, said temporary barrier layer comprising a mixture of a lactone polymer with repetitive units represented by the formula (I); ##STR11## and a vinylidene chloride terpolymer represented by the formula (II); ##STR12## wherein R is a hydrogen atom, an alkyl or an aralkyl group; R 1 , R 2 and R 3 each is a hydrogen atom or a methyl group; n 1 is an integer of from 1 to 5, while n 2 is an integer of 1 or 2; A is a monomer unit of a copolymerizable ethylenically unsaturated acid or of the salt thereof, while B is a copolymerizable ethylenically unsaturated monomer unit; x represents from 50 to 99.5% by weight, y represents from 0.5 to 44.5% by weight, and z represents from 0 to 49.5% by weight.
Claim 3
Dependent Claim
35 words
A photographic element according to claim 1, wherein A in the formula (II) is a monomer unit of a copolymerizable ethylenically unsaturated acid or salt thereof having at least one carboxyl, sulfo, or phosphono group.
Claim 4
Dependent Claim
48 words
A photographic element according to claim 1, wherein A in the formula (II) is selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, monomethyl itaconate, monobutyl itaconate, monomethyl maleate, monobutyl maleate, styrene sulfonate, acryloyloxypropyl sulfonate, 2-acrylamide-2-methyl-ethane sulfonate and alkali metal salt or ammonium salts thereof.
Claim 5
Dependent Claim
36 words
A photographic element according to claim 1, wherein B in the formula (II) is selected from the group consisting of ethylenically unsaturated nitriles, styrenes, ethylenically unsaturated acid esters, ethylenically unsaturated acid amides, and vinyl heterocyclic compounds.
Claim 6
Dependent Claim
37 words
A photographic element according to claim 1 wherein in the formula (II) x represents from 50 to 90% by weight, y represents from 0.5 to 20% by weight, and z represents from 0 to 49.5% by weight.
Claim 7
Dependent Claim
40 words
A photographic element according to claim 1, wherein the temporary barrier layer comprises a mixture of (1) from 5 to 95% by weight of the lactone polymer and (2) from 95 to 5% by weight of the vinylidene chloride terpolymer.
Claim 8
Dependent Claim
15 words
A photographic element according to claim 1, wherein the element further comprises a neutralizing layer.
Claim 9
Dependent Claim
86 words
A photographic element according to claim 1, wherein the element comprises two transparent supports and, between the supports, an image-receiving layer, a light-reflective layer, an opaque layer, a cyan color image forming material containing layer, a red-sensitive silver halide emulsion layer, an interlayer, a magenta color image forming material containing layer, a green-sensitive silver halide emulsion layer, an interlayer, a yellow color image forming material containing layer, a blue-sensitive silver halide emulsion layer, a protective layer, a timing layer and a neutralizing layer in this order.
References Cited (Backward Citations)
US4229516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |