Title:
ギヤ油添加剤
Document Type and Number:
Japanese Patent JP5675635
Kind Code:
B2
Abstract:
Gear oil formulations comprising a gear oil and a film forming agent are disclosed. The film forming agent comprises a polymeric ester which is the reaction product of at least one polyfunctional alcohol, a dimer fatty acid, an optional aliphatic dicarboxylic acid having 5 to 18 carbon atoms and one or more ingredients to reduce the acid value of the polymeric ester to below 5 mgKOH/g with the resultant polymeric ester having a kinematic viscosity at 100° C. ranging from 400 to 5000 mm2/s and a weight average molecular weight ranging from 5000 to 20000. When used as an automotive gear oil formulation the specifications for API GL-4 gear oils are at least satisfied. Use of the gear oil formulation in manual transmissions, transfer cases and differentials and use of the gear oil formulation in an industrial gear suitable for lubricating spur, helical, bevel, worm and hypoid gears are disclosed. Methods of lubrication are also disclosed.
Inventors:
ランドルス，ステーブン ジェイムズ
ボイデ，スティーブン
ルフェーブル，ジョセフィーヌ アン
ボイデ，スティーブン
ルフェーブル，ジョセフィーヌ アン
Application Number:
JP2011539089A
Publication Date:
February 25, 2015
Filing Date:
November 27, 2009
Export Citation:
Assignee:
クローダ インターナショナル パブリック リミティド カンパニー
International Classes:
C10M159/12
Attorney, Agent or Firm:
Aoki 篤
Ishida 敬
Tetsuji Koga
Yoshihiro Kobayashi
Satoru Ideno
Tomoyasu Nagasaka
Ishida 敬
Tetsuji Koga
Yoshihiro Kobayashi
Satoru Ideno
Tomoyasu Nagasaka