KR970074910A - 점도 안정성이 개선된 실리콘유 - Google Patents

점도 안정성이 개선된 실리콘유 Download PDF

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Publication number
KR970074910A
KR970074910A KR1019970016897A KR19970016897A KR970074910A KR 970074910 A KR970074910 A KR 970074910A KR 1019970016897 A KR1019970016897 A KR 1019970016897A KR 19970016897 A KR19970016897 A KR 19970016897A KR 970074910 A KR970074910 A KR 970074910A
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South Korea
Prior art keywords
viscosity
polysiloxane
electrical
composition
silicone
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KR1019970016897A
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English (en)
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래그나 리차드 에이브리
제프리 스코트 베이커
제랄드 안토니 빌러
마이클 헨리 브라운
케빈 제임스 오케슨
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로버트 루이스 맥켈라
다우 코오닝 코퍼레이션
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Publication of KR970074910A publication Critical patent/KR970074910A/ko

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  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

윤활유, 작동액, 유전액, 냉각제 및 압축기 또는 진공펌프용의 실리콘 유기 배합물이 특허청구되어 있다. 이들 배합물은 이들 배합물에 사용되는 실리콘액의 다분산도, 즉 분자량 분포(Mw/Mn)가 1.5를 초과할 때 점도안정성이 개선된다. 다분산도가 1.5미만인 실리콘액을 사용하는 시판 실리콘 유기 블렌드의 점도 증가는 1.3 센티스토크(㎟/s) 이상임에 비하여 이 실리콘 유기 배합물의 점도 증가는 100℃에서 오븐으로 14일 숙성시킬 때 1센티스토크(㎟/s) 미만이다.

Description

점도 안정성이 개선된 실리콘유
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (4)

  1. (A) 점도가 20-100㎟/s 폴리실록산 적어도 85중량퍼센트와 (B) 점도가 200-30,000㎟/s인 폴리실록산 1.5-5.0중량퍼센트의 배합물 및 (C) 윤활성 개선제, 거품억제제 및 부식방지제로 이루어진 첨가제로 이루어지는 조성물로서, 폴리실록산 (A)과 폴리실록산 (B)의 배합물의 다분산도값은 1.5를 초과하며, 상기 조성물의 점도 증가는 ASTM D 445-94로 측정할 때, 100℃에서 오븐으로 14일 숙성시킬 때 1㎟/s 미만이며, 폴리실록산 (A) 및 (B) 는 화학식 (1)
    (여기서 n은 25℃에서 점도가 각각 20-100㎟/s 및 200-30,000㎟/s의 범위내인 폴리실록산(A) 및 (B)를 제공하는 값을 가지며, R1 및 R2는 탄소원자수 1-6의 알킬 라디칼 또는 아릴기이다.)을 가지며, 최종 조성물은 25℃에서 점도가 20-250㎟/s인 조성물.
  2. 유압 시스템내에 있는 제1항에 따른 조성물에 압력을 가하는 것으로 이루어지는 동력 전달 방법.
  3. 기계, 전기 또는 전자기계 장치에서 제1항에 따른 조성물을 순환 및 재순환시키는 것으로 이루어지는 기계, 전기 또는 전자기계 장치의 윤활 또는 냉각 방법.
  4. 전기 장치에서 제1항에 따른 조성물을 유전 냉각제 또는 절연 매체로서 사용하는 것으로 이루어지는 전기 장치의 냉각 또는 절연 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970016897A 1996-05-01 1997-05-01 점도 안정성이 개선된 실리콘유 KR970074910A (ko)

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US08/642,019 US6348437B1 (en) 1996-05-01 1996-05-01 Silicone oils with improved viscosity stability
US642,019 1996-05-01

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DE69718550T2 (de) 2003-11-20
US6348437B1 (en) 2002-02-19
EP0805185A2 (en) 1997-11-05
DE69718550D1 (de) 2003-02-27
EP0805185B1 (en) 2003-01-22
EP0805185A3 (en) 1998-04-01

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