KR970027232A - Magnetic paint composition and method of manufacturing magnetic recording medium using same - Google Patents

Magnetic paint composition and method of manufacturing magnetic recording medium using same Download PDF

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Publication number
KR970027232A
KR970027232A KR1019950040075A KR19950040075A KR970027232A KR 970027232 A KR970027232 A KR 970027232A KR 1019950040075 A KR1019950040075 A KR 1019950040075A KR 19950040075 A KR19950040075 A KR 19950040075A KR 970027232 A KR970027232 A KR 970027232A
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KR
South Korea
Prior art keywords
group
magnetic
recording medium
polyurethane resin
magnetic recording
Prior art date
Application number
KR1019950040075A
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Korean (ko)
Inventor
조현수
박종민
박재봉
Original Assignee
이웅열
주식회사 코오롱
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Application filed by 이웅열, 주식회사 코오롱 filed Critical 이웅열
Priority to KR1019950040075A priority Critical patent/KR970027232A/en
Publication of KR970027232A publication Critical patent/KR970027232A/en

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  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

본 발명은 자기기록매체 제조시에 바자성 지지체에 도포되어 자성층을 형성하며, 자성분과 결합제수지를 포함하는 자성도료조성물에 관한 것으로, 결합제수지로서 인산화합물 관능기를 가지는 폴리우레탄수지와 말단기로서 수산기를 가지는 폴리우레탄수지를 포함하는 것을 특징으로 하며, 이와 같이 결합제수지로서 서로 물성이 다른 2종 이상의 폴리우레탄 수지를 적정량 혼합한 자성도료를 사용하여 자기기록매체를 제조하면 이종(異種)의 수지 사용에서 유발될 수 있는 상용성측면에서의 단점을 해소할 수 있고 PVC계 화합물의 사용배제로 환경오염문제를 해결할 수 있게 되며, 수지 자체에 도입된 극성기로서 분산성을 향상시킬 수 있게 될 뿐만아니라 기계적 물성을 만족시킬 수 있게 된다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic coating composition which is applied to a bazaar support during manufacture of a magnetic recording medium to form a magnetic layer. The present invention relates to a polyurethane resin and a terminal group having a phosphoric acid functional group as a binder resin. It is characterized in that it comprises a polyurethane resin having a hydroxyl group, and as a binder resin, when a magnetic recording medium is prepared using a magnetic paint in which an appropriate amount of two or more kinds of polyurethane resins having different physical properties are mixed, a heterogeneous resin is used. It can solve the shortcomings in terms of compatibility that can be caused in use, solve the environmental pollution problem by using PVC-based compounds, and improve the dispersibility as a polar group introduced into the resin itself. Mechanical properties can be satisfied.

Description

자성도료 조성물 및 이를 이용한 자기기록매체의 제조방법Magnetic paint composition and method of manufacturing magnetic recording medium using same

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

Claims (5)

자성분과 결합제수지를 포함하는 자성도료조성물에 있어서, 결합제수지로서 하기 일반식(I)의 인산화합물 관능기를 가지는 1종 이상의 폴리우레탄수지와 말단기로서 수산기를 가지는 1종 이상의 폴리우레탄수지를 포함하는 것을 특징으로 하는 자기기록매체용 자성도료조성물:A magnetic coating composition comprising a magnetic component and a binder resin, the binder resin comprising at least one polyurethane resin having a phosphate compound functional group of formula (I) as a binder resin and at least one polyurethane resin having a hydroxyl group as a terminal group. Magnetic paint composition for a magnetic recording medium, characterized in that: 위 식에서 R1은 수소원자, 페닐기, 또는 탄소수 1∼14의 알킬기이고, R2는 페닐기, 탄소수 1∼14의 알킬기, 페닐옥시기 도는 탄소수 1∼14의 알콕시기임.Wherein R 1 is a hydrogen atom, a phenyl group, or an alkyl group having 1 to 14 carbon atoms, R 2 is a phenyl group, an alkyl group having 1 to 14 carbon atoms, a phenyloxy group or an alkoxy group having 1 to 14 carbon atoms. 제1항에 있어서, 인산화합물 관능기를 가지는 폴리우레탄수지가 전체 폴리우레탄수지에 대하여 무게비로 20∼80%임을 특징으로 하는 자기기록매체용 자성도료조성물.2. The magnetic coating composition for magnetic recording medium according to claim 1, wherein the polyurethane resin having a phosphate compound functional group is 20 to 80% by weight relative to the total polyurethane resin. 제1항에 있어서, 말단기로서 수산기를 가지를 폴리우레탄수지가 다음 부등식(Ⅱ) 및 (Ⅲ)을 동시에 만족하는 수산기 함량(W)을 갖는 것을 특징으로 하는 자기기록매체용 자성도료조성물.A magnetic coating composition for a magnetic recording medium according to claim 1, wherein the polyurethane resin having a hydroxyl group as an end group has a hydroxyl group content (W) that simultaneously satisfies the following inequality (II) and (III). 비자성지지체 위에 적어도 일층 이상의 코팅층을 형성시키고, 이 코팅층 중 적어도 일층은 자성체를 결합제 수지로 분산시킨 자성도료로 코팅하여 자기기록매체를 제조함에 있어서, 자성도료의 코팅에 결합제수지로서 하기 일반식(I)의 인산화합물 관능기를 가지는 1종 이상의 폴리우레탄수지와 말단기로서 수산기를 가지는 1종 이상의 폴리우레탄수지를 포함하는 자성도료를 사용하는 것을 특징으로 하는 자기기록매체의 제조방법:At least one or more coating layers are formed on the non-magnetic support, and at least one of the coating layers is coated with a magnetic paint in which the magnetic material is dispersed with a binder resin to prepare a magnetic recording medium. A method for producing a magnetic recording medium comprising using a magnetic coating comprising at least one polyurethane resin having a phosphate compound functional group of I) and at least one polyurethane resin having a hydroxyl group as an end group: 위 식에서 R1은 수소원자, 페닐기, 또는 탄소수 1∼14의 알킬기이고; R2는 페닐기, 탄소수 1∼14의 알킬기, 페닐옥시기 또는 탄소수 1∼14의 알콜시기임.R 1 is a hydrogen atom, a phenyl group, or an alkyl group having 1 to 14 carbon atoms; R <2> is a phenyl group, a C1-C14 alkyl group, a phenyloxy group, or a C1-C14 alcohol group. 제4항에 있어서, 인산화합물 관능기를 가지는 폴리우레탄수지가 전체 폴리우레탄수지에 대하여 무게비로 20∼80%임을 특징으로 하는 자기기록매체의 제조방법.The method of manufacturing a magnetic recording medium according to claim 4, wherein the polyurethane resin having a phosphate functional group is 20 to 80% by weight relative to the total polyurethane resin. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950040075A 1995-11-07 1995-11-07 Magnetic paint composition and method of manufacturing magnetic recording medium using same KR970027232A (en)

Priority Applications (1)

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KR1019950040075A KR970027232A (en) 1995-11-07 1995-11-07 Magnetic paint composition and method of manufacturing magnetic recording medium using same

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Application Number Priority Date Filing Date Title
KR1019950040075A KR970027232A (en) 1995-11-07 1995-11-07 Magnetic paint composition and method of manufacturing magnetic recording medium using same

Publications (1)

Publication Number Publication Date
KR970027232A true KR970027232A (en) 1997-06-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR910012146A (en) * 1989-12-27 1991-08-07 다끼사와 다께시 Combination of powder and magnetic recording medium using same
JPH0628663A (en) * 1992-05-21 1994-02-04 Basf Magnetics Gmbh Flexible magnetic recording carrier provided with rear layer
JPH06231447A (en) * 1992-12-10 1994-08-19 Basf Magnetics Gmbh Magnetic recording medium
JPH06340846A (en) * 1992-02-28 1994-12-13 Nippon Polyurethane Ind Co Ltd Polyurethane resin binder for magnetic recording medium
EP0647937A1 (en) * 1993-10-07 1995-04-12 Minnesota Mining And Manufacturing Company Binder for magnetic media

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR910012146A (en) * 1989-12-27 1991-08-07 다끼사와 다께시 Combination of powder and magnetic recording medium using same
JPH06340846A (en) * 1992-02-28 1994-12-13 Nippon Polyurethane Ind Co Ltd Polyurethane resin binder for magnetic recording medium
JPH0628663A (en) * 1992-05-21 1994-02-04 Basf Magnetics Gmbh Flexible magnetic recording carrier provided with rear layer
JPH06231447A (en) * 1992-12-10 1994-08-19 Basf Magnetics Gmbh Magnetic recording medium
EP0647937A1 (en) * 1993-10-07 1995-04-12 Minnesota Mining And Manufacturing Company Binder for magnetic media

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