Stabilised dithiophosphoric acid polysulphides

US5565599A · kind A · utility

Assignee

• Rhein Chemie Rheinau GmbH · DE

Inventors

• Hans-Joachim Graf · Manheim, DE
• Lothar Steger · Plön, DE
• Klaus Kn orr · Haßloch, DE
• Hartmut Schulz · Heidelberg, DE
• Volker Sch afer · Altrip, DE
• Thomas Scholl · Milton, US
• R udiger Schubart · Bensberg, DE
• Manfred Schweiger · Bürstadt, DE

Key dates

• Filing date: Aug 24, 1995
• Grant date: Oct 15, 1996
• Expiry date: Aug 24, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5398
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed herein are stabilized dithiophosphoric acid polysulphides of the formula (I) ##STR1## in which R is a C.sub.1 -C.sub.20 alkyl, cycloalkyl, aryl or aralkyl residue and PA0 x is an integer from 2 to 15, containing as stabilizer 1 to 20 wt.% of a carboxylic acid of the general formula R'COOH, in which R' is a C.sub.1 -C.sub.20 alkyl residue, a cycloalkyl residue, an aryl residue or an aralkyl residue, and 1 to 20 wt.% of calcium oxide or zinc oxide.