Use of polyhydroxycarboxylamides as EP additives

Details Use of polyhydroxycarboxylamides as EP additives Use of polyhydroxycarboxylamides as EP additives

1997-08-26

1999-09-14

Howard, Jacqueline V.

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

Lubricants or separants for moving solid surfaces and...

Organic nitrogen compound

508555, C10M13316

Patent

active

059522747

ABSTRACT:
The invention relates to the use of polyhydroxycarboxylamides as an extreme pressure (EP) additive, in particular for lubricants, metalworking fluids and hydraulic fluids. The invention also relates to an extreme pressure (EP) additive containing at least one amide of a polyhydroxycarboxylic acid. Preferred polyhydroxycarboxylamides are the amides of gluconic acid and of glucoheptonic acid.

REFERENCES:
patent: 2622067 (1952-12-01), White et al.
patent: 2848418 (1958-08-01), Muller et al.
patent: 2898301 (1959-08-01), Mayhew et al.
patent: 3527705 (1970-09-01), Foelsch
patent: 3539516 (1970-11-01), Walters et al.
patent: 4512903 (1985-04-01), Schlicht et al.
patent: 4557846 (1985-12-01), Wisotsky
patent: 4647389 (1987-03-01), Karol et al.

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