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Oil-soluble phosphorus antiwear additives for lubricants

  • US 4,857,214 A
  • Filed: 09/16/1988
  • Issued: 08/15/1989
  • Est. Priority Date: 09/16/1988
  • Status: Expired due to Term
First Claim
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1. An oil-soluble lubricant additive composition comprising the reaction product of an inorganic phosphorus acid or anhydride, including partial and total sulfur analogs thereof, a boron compound, and an ashless dispersant which contains basic nitrogen and/or a hydroxyl group.

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