KR970705154A - 고 분산성 자기 금속 산화 입자 및 이의 제조방법(highly disperse magnetic metal oxide particles, processes for their preparation and their use) - Google Patents

고 분산성 자기 금속 산화 입자 및 이의 제조방법(highly disperse magnetic metal oxide particles, processes for their preparation and their use) Download PDF

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KR970705154A
KR970705154A KR1019970700120A KR19970700120A KR970705154A KR 970705154 A KR970705154 A KR 970705154A KR 1019970700120 A KR1019970700120 A KR 1019970700120A KR 19970700120 A KR19970700120 A KR 19970700120A KR 970705154 A KR970705154 A KR 970705154A
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워너 시버
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아서 에스. 모겐스턴
치론 디아그노스틱스 코오포레이션
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Abstract

혼합 산화물의 자기 입자는 1 내지 10nm의 입자 기름 및 120 내지 350m2/g의 특이 표면적을 가지며, 기능성 실란과 결합된 페라이트를 포함하는 군으로부터 얻는다. 상기 고 분산 입자는 가수분해에 적합한 기능기를 갖는 가수분해성 실란의 존재하에서 수용성 염기 용액으로부터 상기 혼합 산화물을 침강시켜 제조될 수 있다. 상기 혼합 산화물은 유기 및 생물학적 물질을 고정화시키기 위한 운반 물질로 적합하다.

Description

고 분산성 자기 금속 산화 입자 및 이의 제조방법(HIGHLY DISPERSE MAGNETIC METAL OXIDE PARTICLES, PROCESSES FOR THEIR PREPARATION AND THEIR USE)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (40)

1 내지 10nm의 입자 직경 및 120 내지 350m2의 특이 표면적을 가지며, 표면 기능성 실란이 결합된 페라이트를 포함하는 군으로부터 얻은 것을 특징으로 하는 혼합 산화물의 자기 입자.
제 1항에 있어서, 상기 입자 직경이 2 내지 8nm인을 특징으로 하는 입자.
제 2항에 있어서, 상기 입자 직경이 2 내지 6nm인을 특징으로 하는 입자.
제 1항에 있어서, 상기 표면적이 150 내지 330m2/g임을 특징으로 하는 입자.
제 4항에 있어서, 상기 표면적이 200 내지 330m2/g임을 특징으로 하는 입자.
제 1항에 있어서, 상기 실란의 양이 혼합 산화물에 대하여 0.1 내지 30 중량%임을 특징으로 하는 입자.
제 1항에 있어서, 상기 페라이트가 하기 화학식 1로 표시됨을 특징으로 하는 입자.
MeOFe2O3
여기서, Me는 페라이트를 형성하는 2가 금속 원자이거나 상기 금속 원자의 혼합물이다.
제 7항에 있어서, 상기 화학시 1에서 Me가 Zn, Cd, V, Fe, Ni, Cu, Co, Ca, Sr, Ba 또는 Mg임을 특징으로 하는 입자.
제 7항에 있어서, 상기 화학식 1에서 Me가 Fe임을 특징으로 하는 입자.
제 1항에 있어서, 상기 혼합 화합물이 r-Fe2O3자체이거나, 마그네타이트를 갖는 r-Fe2O3의 혼합 결정체를 포함하는 것을 특징으로 하는 입자.
제 1항에 있어서, 상기 실란이 하기 화학식 2로 표시되는 화합물로부터 유도됨을 특징으로 하는 입자.
SiR1R2R4-R3-Y
여기서, R1,R2및 R4는 각각 독립적으로 C1∼C12의 알콕시 또는 할로겐, R3은 C2∼C12의 알킬렌, 벤질렌 또는 페닐렌 및 Y는 -OH, -NH2, -NH(C1∼C4의 알킬), -NH-C2∼C4의 알킬렌-NH2, -NH-C2∼C4의 알킬렌 -NH(C1∼C4의 알킬) 또는 -NH-C2∼C4의 알킬렌-OH이다.
제 11항에 있어서, 상기 R1,R2및 R4가 염소임을 특징으로 하는 입자.
제 11항에 있어서, 상기 R1,R2및 R4가 각각 독립적으로 C1∼C4의 알콕시임을 특징으로 하는 입자.
제 11항에 있어서, 상기 R1,R2및 R4가 각각 독립적으로 메톡시 또는 에톡시임을 특징으로 하는 입자.
제 11항에 있어서, 상기 R3가 C1∼C4의 알킬렌 또는 1,3-또는 1,4페닐렌임을 특징으로 하는 입자.
제 11항에 있어서, 상기 R3가 1,3-프로필렌 또는 1,4-부틸렌임을 특징으로 하는 입자.
제 11항에 있어서, 상기 Y는 -NH2또는 -NH-C2∼C4의 알킬렌 -NH2임을 특징으로 하는 입자.
제 11항에 있어서, 상기 R1,R2및 R4는 각각 독립적으로 메톡시 또는 에톡시, R3는 1,3-프로필렌, 1,4-부틸렌 또는 1,4-페닐렌 및 Y는 -NH2또는 -NH-에틸렌-NH2임을 특징으로 하는 입자.
제 18항에 있어서, 상기 R1,R2및 R4는 각각 독립적으로 메톡시 또는 에톡시, R3는 1,3-프로필렌 또는 1,4-페닐렌 및 Y는 -NH2또는 -NH-에틸렌-NH2임을 특징으로 하는 입자.
(1) 물에 페라이트 및 수용성 철(Ⅲ)염을 형성하는 2가 금속의 수용성 금속염을 용해시키는 단계; (2) 액상 알칼린 용액을 제조하는 단계; (3) 하기 화학식 3으로 표시되는 기능성 실란과 용액 (1)이나 (2) 또는 두 용액 모두를 혼합시키는 단계; 및
(X)3-nSi-R3-Y
여기서, n은 0, 1 또는 2이고, 이탈기로서의 X는 C1∼C12의 알콕시 또는 할로겐이며, R3및 Y는 전술한 바와 같다; (4) 기능성 실란을 포함하는 적어도 하나의 용액 (1) 및 (2)를 반응 용기에 투입하고, 상기 반응 혼합물을 반응시키며 상기 반응이 종결된 후에 혼합 산화물을 분리시키는 단계로 이루어진 것을 특징으로 하는 제 1항의 자기 혼합 산화물의 제조방법.
제 20항에 있어서, 상기 금속염 및 철(Ⅲ)염이 무기염임을 특징으로 하는 방법.
제 20항에 있어서, 상기 금속염 및 철(Ⅲ)염이 미네랄산염 및 무기 옥소산염임을 특징으로 하는 방법.
제 22항에 있어서, 상기 사용된 염이 클로라이드, 브로마이드, 니트라이트, 니트레이트, 설파이트, 설페이트, 바이설페이트, 피로셀페이트, 티오셀페이트, 퍼클로레이트, 퍼브로메이트, 퍼이오데이트, 포스파이트, 하이드로겐 포스페이트, 하이드로겐 포스파이트, 시아나이드 및 티오시아나이드 임을 특징으로 하는 방법.
제 20항에 있어서, 상기 금속염 및 철(Ⅲ)염이 알칼린 매질에서 가수분해됨을 특징으로 하는 방법.
제 22항에 있어서, 상기 금속염이 설페이트이며, 철(Ⅲ)염이 클로라이드임을 특징으로 하는 방법.
제 20항에 있어서, 상기 이탈기 X가 할로겐화물 또는 C1∼C4의 알콕시임을 특징으로 하는 방법.
제 26항에 있어서, 상기 이탈기 X가 클로라이드, 브로마이드, 메톡시 또는 에톡시임을 특징으로 하는 방법.
제 20항에 있어서, 상기 기능성 실란이 상기 용액 (2) 에 첨가됨을 특징으로 하는 방법.
제 20항에 있어서, 상기 사용된 염기가 알칼리 금속 또는 알칼린 토금속 염기, 암모늄 하이드록사이드 또는 일차, 이차 또는 삼차 C1∼C4의 알킬아민의 하이드록사이드 또는 사차 C1∼C4의 알킬암모늄 염기임을 특징으로 하는 방법.
제 20항에 있어서, 상기 사용된 염기가 알칼리 금속 하이드록사이드 또는 암모늄 하이드록사이드 임을 특징으로 하는 방법.
제 30항에 있어서, 상기 사용된 염기가 NaOH 또는 KOH임을 특징으로 하는 방법.
제 20항에 있어서, 상기 염기가 금속염, 철(Ⅲ)염 및 실란의 세가지 반응성분을 가수분해시키는데 충분한 양과 적어도 동일 몰로 첨가됨을 특징으로 하는 방법.
제 32항에 있어서, 상기 염기가 상기 세가지 반응성분에 대하여 과량에서 사용됨을 특징으로 하는 방법.
제 20항에 있어서, 상기 2가 금속염과 철(Ⅲ)염의 몰비가 1:1내지 1:4임을 특징으로 하는 방법.
제 20항에 있어서, 상기 반응 온도가 상온 내지 100℃임을 특징으로 하는 방법.
제 20항에 있어서, 상기 반응 용액이 혼합되기 전에 예열됨을 특징으로 하는 방법.
유기 및 생물학적 물질을 고정화시키기 위한 운반 물질로서 제1항에 따른 자기 혼합 산화물 입자의 용도.
1 내지 10nm의 입자 직경 및 120 내지 350m2/g의 특이 표면적을 가지며, 기능성 실란이 결합된 페라이트를 포함하는 군으로 부터 분리된 혼합 산화물의 자기 입자의 액상 분산물.
제 38항에 있어서, 상기 수용성 분산물이 전체 혼합물에 대하여 0.1 내지 60 중량%의 양으로 존재함을 특징으로 하는 액상 분산물.
제 38항에 있어서, 상기 수용성 분산물이 전체 혼합물에 대하여 0.5 내지 40 중량%의 양으로 존재함을 특징으로 하는 액상 분산물.
※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970700120A 1994-07-07 1995-06-22 고 분산성 자기 금속 산화 입자 및 이의 제조방법(highly disperse magnetic metal oxide particles, processes for their preparation and their use) KR970705154A (ko)

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JPH10502494A (ja) 1998-03-03
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US5776360A (en) 1998-07-07
CA2194554A1 (en) 1996-01-25
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