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US5084339A Expired / Lapsed US ⏱️ 0.0 years remaining

Plastic film with transparent support and antistatic layer

Assignee: Konica Minolta Inc
•
Filing: 1990-05-10
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Granted: 1992-01-28
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Expires: 2010-05-10
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Abstract

Abstract Disclosed is a plastic film comprising a support and an antistatic layer, provided thereon, comprising a reaction product of a water-soluble electroconductive polymer, hydrophobic polymer particles and a curing agent, characterized in that the hydrophobic polymer has a polyalkylene oxide chain.

Inventors

  • 👤 Noriki Tachibana
  • 👤 Yoichi Saito
  • 👤 Toshiaki Yamazaki

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 09:33
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/27; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31935

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 234 words
A plastic film comprising a transparent support having an antistatic layer provided thereon, said antistatic layer consisting essentially of (1) a reaction product of a water-soluble electroconductive polymer having at least one electroconductive group selected from the group consisting of sulfonic acid, sulfuric acid esters, quaternary ammonium salts, tertiary ammonium salts, and a carboxyl group in an amount of at least 5 percent by weight per molecule of said water soluble electroconductive polymer, (2) hydrophobic polymer particles and (3) a curing agent, said hydrophobic polymer being copolymerized with a polyalkylene oxide chain represented by Formula (M); ##STR18## wherein R represents a hydrogen atom, a halogen atom, a lower alkyl group having 1 to 4 carbon atoms or -CH 2 -L-X-; L represents a group having -COO- or ##STR19## or an optionally substituted aryl group having 6 to 12 carbon atoms; R 1 represents hydrogen atom, an optionally substituted aryl group or a lower alkyl group having 1 to 4 carbon atoms; X represents -R 2 -O) n R 3 ; R 2 comprising at least one selected from -CH 2 CH 2 -, ##STR20## -CH 2 CH 2 CH 2 -, ##STR21## -CH 2 CH 2 CH 2 CH 2 - and ##STR22## R 3 represents hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms, and n is an integer of not less than 2 and not more than 70.
Claim 2
Dependent Claim 234 words
A plastic film comprising a transparent support having an antistatic layer provided thereon, said antistatic layer consisting essentially of (1) a reaction product of a water-soluble electroconductive polymer having at least one electroconductive group selected from the group consisting of sulfonic acid, sulfuric acid esters, quaternary ammonium salts, tertiary ammonium salts, and a carboxyl group in an amount of at least 5 percent by weight per molecule of said water soluble electroconductive polymer, (2) hydrophobic polymer particles and (3) a curing agent, said hydrophobic polymer being copolymerized with a polyalkylene oxide chain represented by Formula (M); ##STR18## wherein R represents a hydrogen atom, a halogen atom, a lower alkyl group having 1 to 4 carbon atoms or -CH 2 -L-X-; L represents a group having -COO- or ##STR19## or an optionally substituted aryl group having 6 to 12 carbon atoms; R 1 represents hydrogen atom, an optionally substituted aryl group or a lower alkyl group having 1 to 4 carbon atoms; X represents -R 2 -O) n R 3 ; R 2 comprising at least one selected from -CH 2 CH 2 -, ##STR20## -CH 2 CH 2 CH 2 -, ##STR21## -CH 2 CH 2 CH 2 CH 2 - and ##STR22## R 3 represents hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms, and n is an integer of not less than 2 and not more than 70.
Claim 3
Dependent Claim 20 words
The plastic film according to claim 2, wherein the water-soluble electroconductive polymer has a molecular weight of 3,000 to 100,000.
Claim 4
Dependent Claim 20 words
The plastic film according to claim 2, wherein the water-soluble electroconductive polymer has a molecular weight of 3,500 to 50,000.
Claim 5
Dependent Claim 29 words
The plastic film according to claim 3, wherein the water-soluble electroconductive polymer is contained in the antistatic layer in an amount of 0.01 g to 10 g/m 2 .
Claim 6
Dependent Claim 29 words
The plastic film according to claim 4, wherein the water-soluble electroconductive polymer is contained in the antistatic layer in an amount of 0.1 g to 5 g/m 2 .
Claim 7
Dependent Claim 47 words
The plastic film according to claim 1, wherein the hydrophobic polymer is a polymer obtained from at least one monomer selected from the group consisting of styrene, styrene derivatives, alkyl acrylates, alkyl methacrylates, olefin derivatives, halogenated ethylene derivatives, acrylamide derivatives, methacrylamide derivatives, vinyl ester derivatives and acrylonitrile.
Claim 8
Dependent Claim 31 words
The plastic film according to claim 6, wherein the hydrophobic polymer is a polymer containing styrene derivatives, alkyl acrylates and alkyl methacrylates in an amount of at least 30 mole %.
Claim 9
Dependent Claim 32 words
The plastic film according to claim 1, wherein the polyalkylene oxide chain is introduced into the hydrophobic polymer by copolymerization of the hydrophobic polymer with a monomer having the polyalkylene oxide chain.
Claim 10
Dependent Claim 15 words
The plastic film according to claim 1, wherein the curing agent is a polyfunctional aziridine.
Claim 11
Dependent Claim 25 words
The plastic film according to claim 1, wherein the curing agent is a difunctional or trifunctional aziridine having a molecular weight of 600 or less.

References Cited (Backward Citations)

GB2024440A Cited
FR2444958A1 Cited
US4415626A Cited
EP0245090A2 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-01-27 1995-07-29 1996-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-01-27 1999-07-29 2000-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-01-27 2003-07-29 2004-01-28 $7700.00 Window Closed / Lapsed

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