KR910012011A - Biaxially Stretched Polyester Film for Magnetic Recording Media - Google Patents

Biaxially Stretched Polyester Film for Magnetic Recording Media Download PDF

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Publication number
KR910012011A
KR910012011A KR1019890019160A KR890019160A KR910012011A KR 910012011 A KR910012011 A KR 910012011A KR 1019890019160 A KR1019890019160 A KR 1019890019160A KR 890019160 A KR890019160 A KR 890019160A KR 910012011 A KR910012011 A KR 910012011A
Authority
KR
South Korea
Prior art keywords
magnetic recording
recording media
biaxially stretched
polyester film
stretched polyester
Prior art date
Application number
KR1019890019160A
Other languages
Korean (ko)
Inventor
김광태
김태한
전승범
Original Assignee
이수환
제일합섬 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이수환, 제일합섬 주식회사 filed Critical 이수환
Priority to KR1019890019160A priority Critical patent/KR910012011A/en
Priority to JP2204057A priority patent/JPH03199238A/en
Publication of KR910012011A publication Critical patent/KR910012011A/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/16—Solid spheres
    • C08K7/18—Solid spheres inorganic
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/733—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the addition of non-magnetic particles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter

Landscapes

  • Chemical & Material Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

내용 없음No content

Description

자기기록매체용 이축연신 폴리에스테르 필름Biaxially Stretched Polyester Film for Magnetic Recording Media

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (1)

수지의 80중량% 이상의 화학구조적 반복단위가 에틸렌테레프탈레이트로 된 폴리에스테르 중에 평균입경이 20-500nm이고 실질적으로 구형인 콜로이드상 실리카 입자를 0.05-5.0중량%를 함유하고 하기식(Ⅰ)으로 정의되는 입자의 평균 입경비(R)가 3.0-15.0의 범위를 만족하는 비활성 무기입자를 0.005-1.0중량% 함유하는 자기 기록매체용 이축 연신 폴리에스테르 필름At least 80% by weight of the chemical structural repeating unit contained 0.05-5.0% by weight of substantially spherical colloidal silica particles having an average particle diameter of 20-500 nm in a polyester of ethylene terephthalate and defined by the following formula (I): Biaxially stretched polyester film for magnetic recording media containing 0.005-1.0% by weight of inert inorganic particles having an average particle size ratio (R) of the particles to be in the range of 3.0-15.0. ‥‥‥‥‥‥‥ (Ⅰ) ‥‥‥‥‥‥‥‥ (Ⅰ) 참고사항 : 최초출원 내용에 의하여 공개하는 것임.Note: The disclosure is based on the original application.
KR1019890019160A 1989-12-21 1989-12-21 Biaxially Stretched Polyester Film for Magnetic Recording Media KR910012011A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019890019160A KR910012011A (en) 1989-12-21 1989-12-21 Biaxially Stretched Polyester Film for Magnetic Recording Media
JP2204057A JPH03199238A (en) 1989-12-21 1990-08-02 Biaxially oriented polyester film for magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890019160A KR910012011A (en) 1989-12-21 1989-12-21 Biaxially Stretched Polyester Film for Magnetic Recording Media

Publications (1)

Publication Number Publication Date
KR910012011A true KR910012011A (en) 1991-08-07

Family

ID=19293325

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890019160A KR910012011A (en) 1989-12-21 1989-12-21 Biaxially Stretched Polyester Film for Magnetic Recording Media

Country Status (2)

Country Link
JP (1) JPH03199238A (en)
KR (1) KR910012011A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0570612A (en) * 1991-09-12 1993-03-23 Toyobo Co Ltd Biaxially orientated polyester film
JP3545435B2 (en) * 1992-03-27 2004-07-21 帝人株式会社 Base film for magnetic recording tape
FR2810987B1 (en) * 2000-07-03 2002-08-16 Rhodianyl POLYMERIC COMPOSITIONS WITH IMPROVED MECHANICAL PROPERTIES

Also Published As

Publication number Publication date
JPH03199238A (en) 1991-08-30

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application