Perfluoropolyether derivatives, and lubricants and magnetic reco

Details Perfluoropolyether derivatives, and lubricants and magnetic reco Perfluoropolyether derivatives, and lubricants and magnetic reco

1992-06-19

1995-09-26

Willis, Jr., Prince

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

252 34, 252 546, 252 58, 252 6251, 252 6254, 252 6256, C07C 59115, C10M10524, C10M10526

Patent

active

054535395

ABSTRACT:
Novel perfluoropolyether derivatives are described which are obtained from perfluoropolyethers having a carboxyl group at one or both ends and monoamines or diamines. The derivative is useful as a lubricant owing to its significantly improved lubricity. The lubricity is shown under severe high or low temperature and humidity conditions over a long term. The derivative is especially useful as a lubricant for magnetic recording mediums of the coating and metal thin film types.

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patent: 5128216 (1992-07-01), Ng
Database WPIL Derwent Publications Ltd., London GB; AN 89-057007 (08), and JP-A-1 008 506 (Sony Corp.) 12 Nov. 1989.
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Database WPIL Derwent Publications Ltd., London, GB; AN 92-076915 & JP-A-4 021 922 (Hitachi KK) 24 Jan. 1992 Abstract.

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