Method for preparing urea grease having low noise properties

Details Method for preparing urea grease having low noise properties Method for preparing urea grease having low noise properties

2000-02-28

2000-10-24

Howard, Jacqueline V.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic nitrogen compound

C10M11508

Patent

active

061367621

ABSTRACT:
A method for preparing urea grease excellent in low noise properties comprises the step of adding a base oil in which an amine (or an isocyanate) is dissolved or dispersed, to a base oil in which an isocyanate (or an amine) is dissolved or dispersed, in the form of liquid drops having a diameter of not more than 300 .mu.m to react the isocyanate with the amine; or the step of directly contacting liquid drops comprising a base oil in which an isocyanate is dissolved or dispersed and having a diameter of not more than 300 .mu.m with liquid drops comprising a base oil in which an amine is dissolved or dispersed and having a diameter of not more than 300 .mu.m to react the isocyanate with the amine. The method permits the production of urea grease excellent in low noise properties at a low cost.

REFERENCES:
patent: 2925387 (1960-02-01), Traise et al.
patent: 4668411 (1987-05-01), Yasui et al.
patent: 5707944 (1998-01-01), Yokouchi et al.
patent: 6063743 (2000-05-01), Seubert et al.

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