Rca Inc.

David A Berry

Joseph R Preston

Louis J Hillenbrand

Frederick Russell Nyman

Robert H Huck

Video discs are cleaned with a water-based solution to remove water soluble salts from the surface of the discs, thereby reducing the moisture sensitivity of the discs.

Video disc processing

High density information discs are lubricated with a silyl quaternary ammonium salt of the formula ##STR1## wherein R is a lower alkyl group of 1-5 carbon atoms; R.sub.3 is methyl or ethyl; R.sub.4 is an alkyl group of 1-12 carbon atoms and X is --OSO.sub.2 --(CH.sub.2).sub.n CH.sub.3 wherein n is an integer of 5-12. Discs lubricated with this lubricant exhibit improved stability to high temperature, high relative humidity environments.

High density information disc lubricants

High density information discs comprising a conductive carbon-loaded polyvinylchloride disc lubricated with a fractionated methyl alkyl siloxane lubricant which contains a tetrakis(dialkylamino)silane additive.

High density information disc

High density information discs comprising a conductive carbon-loaded polyvinylchloride disc lubricated with a fractionated methyl alkyl siloxane lubricant which contains a hexaalkyldisilazane additive.

High density information discs comprising a conductive carbon loaded polyvinylchloride disc is lubricated with a fractionated methyl alkyl siloxane lubricant which contains an alkyl-substituted-(trialkoxysilyl)alkyl quaternary ammonium salt additive.

High density information discs comprising a conductive carbon loaded polyvinylchloride disc is lubricated with a fractionated methyl alkyl siloxane lubricant which contains a quinuclidene additive.

Growing community of inventors

Columbus, OH, United States of America

David A Berry