Title (en)

Silicone fluids for viscous couplings.

Title (de)

Silikonflüssigkeiten für Visco-Kupplungen.

Title (fr)

Fluides de silicone pour accouplements visqueux.

Publication

EP 0397507 A1 19901114 (EN)

Application

EP 90305069 A 19900510

Priority

• JP 2870090 A 19900207
• JP 3099090 A 19900209
• JP 3336890 A 19900213
• JP 11626589 A 19890510
• JP 31270089 A 19891130

Abstract (en)

An organopolysiloxane, containing a C1-18, optionally halogenated, hydrocarbon group, is used as the fluid in a viscous coupling, with as additive: a) a phosphorus type anti-wear agent (27 formulae are given), e.g. a triaryl phosphate, optionally also with a sulfur or zinc dithiophosphate agent, each in amount of 0.01 - 5 wt %; or b) a metal deactivator, e.g. benzotriazole or other heterocylic compound or an organic acid, and or a corrosion inhibitor, e.g. a stearate, each in amount of 0.001 to 1 wt %. An antioxidant may also be added, e.g. an amine, in amount of 0.001 to 5 wt %. The fluids are exemplified as used in a coupling having 111 metal discs, with 25 to 50 rpm difference in speeds of rotation, at 130 DEG C for up to 100 hours; they have improved heat-resistance, and so suffer little change in viscosity or torque in use.

IPC 1-7

C10M 169/04; C10N 40/04

IPC 8 full level

C10M 169/04 (2006.01)

CPC (source: EP)

C10M 107/50 (2013.01); C10M 133/04 (2013.01); C10M 133/12 (2013.01); C10M 135/28 (2013.01); C10M 135/36 (2013.01); C10M 137/00 (2013.01); C10M 169/04 (2013.01); C10M 2207/123 (2013.01); C10M 2207/125 (2013.01); C10M 2207/129 (2013.01); C10M 2207/16 (2013.01); C10M 2207/22 (2013.01); C10M 2207/281 (2013.01); C10M 2207/282 (2013.01); C10M 2207/283 (2013.01); C10M 2207/286 (2013.01); C10M 2207/289 (2013.01); C10M 2215/02 (2013.01); C10M 2215/04 (2013.01); C10M 2215/06 (2013.01); C10M 2215/064 (2013.01); C10M 2215/065 (2013.01); C10M 2215/066 (2013.01); C10M 2215/067 (2013.01); C10M 2215/068 (2013.01); C10M 2215/22 (2013.01); C10M 2215/221 (2013.01); C10M 2215/225 (2013.01); C10M 2215/226 (2013.01); C10M 2215/26 (2013.01); C10M 2215/30 (2013.01); C10M 2219/02 (2013.01); C10M 2219/022 (2013.01); C10M 2219/024 (2013.01); C10M 2219/062 (2013.01); C10M 2219/066 (2013.01); C10M 2219/086 (2013.01); C10M 2219/10 (2013.01); C10M 2219/102 (2013.01); C10M 2219/104 (2013.01); C10M 2219/106 (2013.01); C10M 2219/108 (2013.01); C10M 2223/00 (2013.01); C10M 2223/04 (2013.01); C10M 2223/041 (2013.01); C10M 2223/042 (2013.01); C10M 2223/045 (2013.01); C10M 2223/047 (2013.01); C10M 2223/065 (2013.01); C10M 2229/025 (2013.01); C10M 2229/0405 (2013.01); C10M 2229/041 (2013.01); C10M 2229/0415 (2013.01); C10M 2229/042 (2013.01); C10M 2229/0425 (2013.01); C10M 2229/0435 (2013.01); C10M 2229/0445 (2013.01); C10M 2229/0455 (2013.01); C10M 2229/0465 (2013.01); C10M 2229/0475 (2013.01); C10M 2229/0485 (2013.01); C10M 2229/0505 (2013.01); C10M 2229/051 (2013.01); C10M 2229/0515 (2013.01); C10M 2229/0525 (2013.01); C10M 2229/0535 (2013.01); C10M 2229/0545 (2013.01); C10N 2010/00 (2013.01); C10N 2010/04 (2013.01); C10N 2020/01 (2020.05); C10N 2040/08 (2013.01)

Citation (search report)

• [Y] GB 2206887 A 19890118 - COSMO OIL CO LTD, et al
• [Y] FR 2455079 A1 19801121 - OLIN CORP [US]
• [X] US 3532730 A 19701006 - CULPEPPER ALAN L
• [X] US 4744915 A 19880517 - BUDNIK RICHARD A [US]
• [X] GB 695308 A 19530805 - DOW CORNING LTD
• [A] GB 1296163 A 19721115
• [A] GB 2203750 A 19881026 - DOW CORNING

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0397507 A1 19901114; EP 0397507 B1 19950315; DE 69017749 D1 19950420; DE 69017749 T2 19950706

DOCDB simple family (application)

EP 90305069 A 19900510; DE 69017749 T 19900510