Grease removing method and device

Details Grease removing method and device Grease removing method and device

2007-04-10

2007-04-10

El-Arini, Zeinab (Department: 1746)

Cleaning and liquid contact with solids

Processes

Using sequentially applied treating agents

C134S040000

Reexamination Certificate

active

10380630

ABSTRACT:
This invention relates to a degreasing process and device. It is particularly useful for degreasing surfaces coated with lanoline. The process according to this invention comprises a step to clean the surface to be degreased with a cleaning solvent and a step to rinse the cleaned surface with a rinsing solvent, said cleaning solvent including a solvent A comprising dipropylene glycol monomethyl ether with a boiling point of more than 100° and without a flash point or with a flash point of more than 70°, and said rinsing solvent comprising a solvent B comprising 1,1,1,2,3,4,4,5,5,5-decafluoropentane with a boiling point less than 70° and a surface tension less than 30 mN/m.

REFERENCES:
patent: 5786319 (1998-07-01), Pedersen et al.
patent: 0 688 860 (1995-12-01), None
patent: 2 751 899 (1998-02-01), None
patent: 06-122897 (1994-05-01), None
patent: 10 036894 (1998-02-01), None
patent: 94 28196 (1994-12-01), None

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