Patent US5370981A successfully refreshed from Google Patents.
US5370981A
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Antistatic plastic articles
Assignee: Agfa Gevaert NV
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Filing: 1993-03-24
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Granted: 1994-12-06
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Expires: 2013-03-24
Abstract
Abstract Antistatically treated plastic formed articles, e.g. photographic film supports, that contain at least two layers on the surface to be antistatically treated, wherein a layer nearer to the plastic surface contains a preparation of a polythiophene that is built up from structural units of the formula ##STR1## wherein R 1 and R 2 independently of each other stand for hydrogen or a C 1 -C 4 -alkyl group or together form an optionally substituted C 1 -C 4 -alkylene group, preferably a methylene group optionally substituted by alkyl groups, a 1,2-ethylene group optionally substituted by C 1 -C 12 -alkyl or phenyl groups, a 1,3-propylene group or a 1,2-cyclohexylene group, and a polyanion, a farther layer contains a film-forming polymer and at least one of the two layers contains an alkoxysilane, are characterized, apart from excellent antistatic properties, by very good layer adhesion.
Inventors
- 👤 Werner Krafft
- 👤 Friedrich Jonas
- 👤 Bavo Muys
- 👤 Dirk Quintens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:49
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/126; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/044; C08J7/046; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; C08J2481/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/31
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
213 words
Antistatic plastic formed articles containing at least two layers on the surface of which an antistatic layer located nearer to the plastic surface contains a preparation of a polythiophene that is built up form structural units of the formula ##STR6## in which R 1 and R 2 independently of each other stand for hydrogen or a C 1 -C 4 -alkyl group or together form an optionally substituted C 1 -C 4 -alkylene group, or a 1,2-cyclohexylene group, and a polyanion, wherein said polythiophene preparation contains solids, a protective layer located farther from the plastic surface than the antistatic layer contains a film-forming polymer and at least one of the at least two layers contains a silane of formula (II) X.sub.4-m --Si(OR.sub.3).sub.m (II) in which R 3 represents a hydrogen atom, an aliphatic hydrocarbon group with less than 10 carbon atoms or an acyl group with less than 10 carbon atoms, X represents ##STR7## R represents a hydrocarbyl group with 1 to 20 C atoms, and m is 1 to 3 in an amount of 1 to 300 Wt-% relative to the solids of the polythiophene preparation, and at least 10 wt-% of the silane present in said at least one of said at least two layers is contained in the protective layer.
Claim 2
Dependent Claim
213 words
Antistatic plastic formed articles containing at least two layers on the surface of which an antistatic layer located nearer to the plastic surface contains a preparation of a polythiophene that is built up form structural units of the formula ##STR6## in which R 1 and R 2 independently of each other stand for hydrogen or a C 1 -C 4 -alkyl group or together form an optionally substituted C 1 -C 4 -alkylene group, or a 1,2-cyclohexylene group, and a polyanion, wherein said polythiophene preparation contains solids, a protective layer located farther from the plastic surface than the antistatic layer contains a film-forming polymer and at least one of the at least two layers contains a silane of formula (II) X.sub.4-m --Si(OR.sub.3).sub.m (II) in which R 3 represents a hydrogen atom, an aliphatic hydrocarbon group with less than 10 carbon atoms or an acyl group with less than 10 carbon atoms, X represents ##STR7## R represents a hydrocarbyl group with 1 to 20 C atoms, and m is 1 to 3 in an amount of 1 to 300 Wt-% relative to the solids of the polythiophene preparation, and at least 10 wt-% of the silane present in said at least one of said at least two layers is contained in the protective layer.
Claim 3
Dependent Claim
46 words
Plastic formed articles according to claim 1, characterized in that the silane has the formula ##STR8## wherein R 4 represents an alkylene group with 1 to 4 carbon atoms, and R 6 represents a hydrogen atom or an alkyl group with 1 to 10 carbon atoms.
Claim 4
Dependent Claim
36 words
Photographic materials with a plastic base that contains on the one side at least one silver halide emulsion layer, characterized in that on the other side it contains at least two layers according to claim 1.
Claim 5
Dependent Claim
20 words
Photographic material according to claim 3, characterized in that the plastic base is a transparent cellulose triacetate or polyester film.
Claim 6
Dependent Claim
39 words
Plastic formed articles according to claim 1 wherein the total amount of the silane present in said at least one of said at least two layers is 10 to 100 wt-%, relative to the solids of the polythiophene preparation.
Claim 7
Dependent Claim
57 words
Antistatic plastic formed articles according to claim 1, wherein both said antistatic layer and said protective layer contain said silane in an amount of 1 to 300 wt-% relative to the solids of the polythiophene preparation, and at least 10 wt-% of the silane present in said at least two layers is contained in the protective layer.
Claim 8
Dependent Claim
29 words
Antistatic plastic formed articles according to claim 1, wherein at least 40 wt-% of the silane present in said at least two layers is contained in the protective layer.
Claim 9
Dependent Claim
29 words
Antistatic plastic formed articles according to claim 6, wherein at least 40 wt-% of the silane present in said at least two layers is contained in the protective layer.
Claim 10
Dependent Claim
41 words
Plastic formed articles according to claim 1, wherein R 1 and R 2 together form a methylene group optionally substituted by alkyl groups, a 1,2-ethylene group optionally substituted by C 1 -C 12 -alkyl or phenyl groups or a 1,3-propylene group.
Claim 11
Dependent Claim
238 words
Antistatic plastic formed articles containing at least two layers on the surface of which an antistatic layer located nearer to the plastic surface contains a preparation of a polythiophene that is built up from structural units of the formula ##STR9## in which R 1 and R 2 independently of each other stand for hydrogen or a C 1 -C 4 -alkyl group or together form an optionally substituted C 1 -C 4 -alkylene group or a 1,2-cyclohexylene group, and a polyanion, wherein said polythiophene preparation contains solids, a protective layer located farther from the plastic surface than the antistatic layer contains a film-forming polymer and at least one of the at least two layers contains a silane of formula (II) X.sub.4-m --Si(OR.sub.3).sub.m (II) in which R 3 represents a hydrogen atom, an aliphatic hydrocarbon group with less than 10 carbon atoms or an acyl group with less than 10 carbon atoms, X represent ##STR10## wherein R 4 and R 5 independently of each other represent alkylene groups with 1 to 4 carbon atoms, and R 6 represents a hydrogen atom or an alkyl group with 1 to 10 carbon atoms, and m is 1 to 3 in an amount of 1 to 300 wt-% relative to the solids of the polythiophene preparation, and at least 10 wt-% of the silane present in said at least one of said at least two layers is contained in the protective layer.
Claim 12
Dependent Claim
238 words
Antistatic plastic formed articles containing at least two layers on the surface of which an antistatic layer located nearer to the plastic surface contains a preparation of a polythiophene that is built up from structural units of the formula ##STR9## in which R 1 and R 2 independently of each other stand for hydrogen or a C 1 -C 4 -alkyl group or together form an optionally substituted C 1 -C 4 -alkylene group or a 1,2-cyclohexylene group, and a polyanion, wherein said polythiophene preparation contains solids, a protective layer located farther from the plastic surface than the antistatic layer contains a film-forming polymer and at least one of the at least two layers contains a silane of formula (II) X.sub.4-m --Si(OR.sub.3).sub.m (II) in which R 3 represents a hydrogen atom, an aliphatic hydrocarbon group with less than 10 carbon atoms or an acyl group with less than 10 carbon atoms, X represent ##STR10## wherein R 4 and R 5 independently of each other represent alkylene groups with 1 to 4 carbon atoms, and R 6 represents a hydrogen atom or an alkyl group with 1 to 10 carbon atoms, and m is 1 to 3 in an amount of 1 to 300 wt-% relative to the solids of the polythiophene preparation, and at least 10 wt-% of the silane present in said at least one of said at least two layers is contained in the protective layer.
Claim 13
Dependent Claim
36 words
Photographic materials with a plastic base that contains on the one side at least one silver halide emulsion layer, characterized in that on the other side it contains at least two layers according to claim 10.
Claim 14
Dependent Claim
20 words
Photographic material according to claim 11, characterized in that the plastic base is a transparent cellulose triacetate or polyester film.
Claim 15
Dependent Claim
39 words
Plastic formed articles according to claim 10 wherein the total amount of the silane present in said at least one of said at least two layers is 10 to 100 wt-%, relative to the solids of the polythiophene preparation.
Claim 16
Dependent Claim
57 words
Antistatic plastic formed articles according to claim 10, wherein both said antistatic layer and said protective layer contain said silane in an amount of 1 to 300 wt-% relative to the solids of the polythiophene preparation, and at least 10 wt-% of the silane present in said at least two layers is contained in the protective layer.
Claim 17
Dependent Claim
29 words
Antistatic plastic formed articles according to claim 10, wherein at least 40 wt-% of the silane present in said at least two layers is contained in the protective layer.
Claim 18
Dependent Claim
18 words
Antistatic plastic formed articles according to claim 14, wherein at least 40 wt-% of the silane present in.
Claim 19
Dependent Claim
41 words
Plastic formed articles according to claim 10, wherein R 1 and R 2 together form a methylene group optionally substituted by alkyl groups, a 1,2-ethylene group optionally substituted by C 1 -C 12 -alkyl or phenyl groups or a 1,3-propylene group.
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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) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |