Stretched polyester film having an antistatic coating comprising a polymer having pyrrolidium rings in the main chain
First Claim
Patent Images
1. A stretched antistatic laminate film comprising at least one coating layer having a thickness in the range from 0.01 to 5 μ
- m and containing a polymer having pyrrolidium rings in the main chain of the polymer on a polyester film layer, said polymer having pyrrolidium rings in the main chain of the polymer containing the repeating unit represented by the following formula (I) or (II);
##STR7## wherein R1 and R2 independently represent respectively an alkyl or phenyl group which may be substituted, R1 and R2 may chemically bond to form a ring, or one of R1 and R2 represents a hydrogen atom and X- represents a halogen atom, an inorganic acid residue, and organic sulfonic acid residue or a carboxylic acid residue, said coating layer being formed on the polyester film layer by an in-line coating method, said in-line coating method comprising applying said coating layer to a uniaxially stretched polyester film which has been uniaxially stretched by 2-6 times at a temperature from 60 to 130°
C. by a roll stretching method and then optionally drying, stretching the resultant coated uniaxially stretched polyester film by 2-6 times at a temperature from 80°
to 130°
C. in the direction perpendicular to the uniaxial stretching direction and then heat treating the coated stretched polyester film at a temperature from 150°
to 250°
C. for 1 to 600 seconds.
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Accused Products
Abstract
Disclosed herein are a stretched antistatic laminate film comprising at least one coating layer containing a polymer having pyrrolidium rings in the main molecular chain, and a polyester film layer, a magnetic recording medium using the same, and a recording material for heat sensitive transfer printing using the same.
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Citations
8 Claims
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1. A stretched antistatic laminate film comprising at least one coating layer having a thickness in the range from 0.01 to 5 μ
- m and containing a polymer having pyrrolidium rings in the main chain of the polymer on a polyester film layer, said polymer having pyrrolidium rings in the main chain of the polymer containing the repeating unit represented by the following formula (I) or (II);
##STR7## wherein R1 and R2 independently represent respectively an alkyl or phenyl group which may be substituted, R1 and R2 may chemically bond to form a ring, or one of R1 and R2 represents a hydrogen atom and X- represents a halogen atom, an inorganic acid residue, and organic sulfonic acid residue or a carboxylic acid residue, said coating layer being formed on the polyester film layer by an in-line coating method, said in-line coating method comprising applying said coating layer to a uniaxially stretched polyester film which has been uniaxially stretched by 2-6 times at a temperature from 60 to 130°
C. by a roll stretching method and then optionally drying, stretching the resultant coated uniaxially stretched polyester film by 2-6 times at a temperature from 80°
to 130°
C. in the direction perpendicular to the uniaxial stretching direction and then heat treating the coated stretched polyester film at a temperature from 150°
to 250°
C. for 1 to 600 seconds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- m and containing a polymer having pyrrolidium rings in the main chain of the polymer on a polyester film layer, said polymer having pyrrolidium rings in the main chain of the polymer containing the repeating unit represented by the following formula (I) or (II);
Specification
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Current AssigneeDiafoil Hoechst Company, Limited
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Original AssigneeDiafoil Co., Ltd. (Mitsubishi Chemical Group Corp.)
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InventorsTakeda, Naohiro, Okajima, Nariaki, Kita, Masahiro, Otani, Yuzo
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Primary Examiner(s)Cashion, Jr., Merrell C.
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Assistant Examiner(s)Resan, Stevan A.
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Application NumberUS07/279,199Time in Patent Office1,145 DaysField of Search430/528, 428/480, 428/922, 428/336, 548/400, 260/DIG. 17US Class Current428/336CPC Class CodesB41M 5/42 Intermediate, backcoat, or ...B41M 5/426 characterised by inorganic ...B41M 5/44 characterised by the macrom...B41M 5/443 Silicon-containing polymers...Y10S 260/17 High polymeric, resinous, a...Y10S 428/91 Product with molecular orie...Y10S 428/922 Static electricity metal bl...Y10T 428/265 1 mil or lessY10T 428/31786 Of polyester [e.g., alkyd, ...
