Additive for friction lining mixtures
AssigneeChemson Polymer-Additive Gesellschaft
InventorLothar Buxbaum
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Abstract
A solid lubricant additive for resin-bound friction lining mixtures contains manganous sulphide (MnS). The additive further optionally contains other sulphides, carbon carriers such as graphite and coke, phosphates and/or oxides. The additive results in the adjustment of the coefficient of friction and wear in friction lining materials. The additive may be advantageously employed in asbestos-free and lead-free friction lining mixtures in heavy-duty friction parts as used in brakes, clutches, synchromesh gears.
Claims26
A resin bound friction lining mixture which comprises a phenolic and/or cresolic resin and a solid lubricant additive comprising MnS.
Solid lubricant additive comprising
- MnS;
- one or more sulphides selected from the group consisting of sulphides of molybdenum, zinc, antimony, copper, iron, tungsten, titanium, and combinations thereof;
- one or more oxides selected from the group consisting of oxides of aluminum, iron, chromium, copper, zinc, manganese, antimony, titanium, molybdenum, silicon, zirconium, and combinations thereof;
- and
- a phosphate, pyrophosphate or polyphosphate selected from the group consisting of phosphates, pyrophosphates and polyphosphates of sodium, potassium, magnesium, calcium, boron, aluminum, copper, zinc, iron and combinations thereof.
Solid lubricant additive comprising
- MnS;
- one or more oxides selected from the group consisting of oxides of aluminum, iron, chromium, copper, zinc, manganese, antimony, titanium, molybdenum, silicon, zirconium and combinations thereof;
- and
- graphite, coke, or a combination thereof.
Solid lubricant additive comprising
- MnS;
- and
- a phosphate, pyrophosphate or polyphosphate selected from the group consisting of phosphates, pyrophosphates and polyphosphates of sodium, potassium, magnesium, calcium, boron, aluminum, copper, zinc, iron, and combinations thereof.
Dependencies are inferred from the claim text.