Modified antistatic compositions and thermally developable materials containing same
AssigneeEastman Kodak Company
InventorsKumars Sakizadeh, Gary E. LaBelle, Michael W. Orem, Aparna V. Bhave
Life of this patent
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Abstract
Antistatic compositions include a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with an amine wherein Rf comprises 4 or more fully fluorinated carbon atoms. These antistatic compositions can be formulated in organic solvent-based conductive coating compositions, with or without hydrophobic binders, that can be used to form conductive layers in thermally developable materials including thermographic and photothermographic materials.
Claims47
An antistatic composition comprising one or more solvents, at least 50 volume % being organic solvent(s), and a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with an amine wherein Rf comprises 4 or more fully fluorinated carbon atoms.
A thermally developable material comprising a support and having thereon at least one thermally developable layer, and a first conductive layer comprising a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with an amine wherein Rf comprises 4 or more fully fluorinated carbon atoms.
A black-and-white thermographic material that comprises a support having thereon one or more thermally-developable imaging layers comprising a binder and in reactive association, a non-photosensitive source of reducible silver ions, and a reducing composition for said non-photosensitive source of reducible silver ions, and
- a first conductive layer comprising a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with an aliphatic amine wherein Rf comprises 4 or more even-numbered fully fluorinated carbon atoms.
A photothermographic material that comprises a support having thereon one or more thermally developable imaging layers comprising a binder and in reactive association, a photosensitive silver halide, a non-photosensitive source of reducible silver ions, a reducing composition for said non-photosensitive source reducible silver ions, and
- a first conductive layer comprising a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with an amine wherein Rf comprises 4 or more even-numbered fully fluorinated carbon atoms.
A black-and-white photothermographic material that comprises a support having thereon:
- a) one or more thermally developable imaging layers each comprising a binder, and in reactive association,
- a photosensitive silver bromide or silver iodobromide,
- a non-photosensitive source of reducible silver ions that includes one or more silver carboxylates at least one of which is silver behenate,
- a reducing composition for said non-photosensitive source reducible silver ions that includes at least one hindered phenol, and
- at least one toner, antifoggant, spectral sensitizing dye, or high contrast agent, or any combination thereof,
- b) a protective overcoat disposed over said one or more thermally developable imaging layers,
- c) on the backside, a first conductive layer comprising a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with a polyoxyalkylenediamine wherein Rf comprises a single fully fluorinated fluoroalkyl chain comprising 6, 8, or 10 carbon atoms, or a mixture of two or more fluorochemicals that are reaction products of the same or different Rf—CH2CH2—SO3H with the same or different polyoxyalkylenediamine, and
- d) also on said backside, an antihalation layer disposed over said first conductive layer.
A black-and-white thermographic material that comprises a support having thereon:
- a) one or more thermally developable imaging layers each comprising a binder, and in reactive association,
- a non-photosensitive source of reducible silver ions that includes one or more silver carboxylates at least one of which is silver behenate,
- a reducing composition for said non-photosensitive source reducible silver ions that includes at least one di- or tri-hydroxy compound having at least two hydroxy groups in ortho- or para-relationship on the same aromatic nucleus,
- at least one toner, antifoggant, or high contrast agent, or any combination thereof,
- b) a protective overcoat disposed over said one or more thermally developable imaging layers, and
- c) on the backside, a first conductive layer comprising a fluorochemical that is a reaction product of Rf—CH2CH2—SO3H with a polyoxyalkylenediamine wherein Rf comprises a single fully fluorinated fluoroalkyl chain comprising 6, 8, or 10 carbon atoms, or a mixture of two or more fluorochemicals that are reaction products of the same or different Rf—CH2CH2—SO3H with the same or different polyoxyalkylenediamine.
A method of preparing an antistatic composition comprising dispersing Rf—CH2CH2—SO3H wherein Rf comprises 4 or more even-numbered fully fluorinated carbon atoms and an amine in one or more solvents, at least 50 volume % being organic solvent(s), said one or more solvents further comprising one or more hydrophobic binders, and reacting said amine and Rf—CH2CH2—SO3H to provide a fluorochemical in an antistatic composition.
A method of coating an antistatic composition comprising:
- dispersing Rf—CH2CH2—SO3H wherein Rf comprises 4 or more even-numbered fully fluorinated carbon atoms and an amine in one or more solvents, at least 50 volume % being organic solvent(s), said one or more solvents further comprising one or more hydrophobic binders, and reacting said amine and Rf—CH2CH2—SO3H to provide a fluorochemical in an antistatic composition, and
- without isolation or purification of said fluorochemical, applying said antistatic composition to a substrate.
Dependencies are inferred from the claim text.