Compositions – Electrolytes for electrical devices
Patent
1995-02-03
1995-12-12
McAvoy, Ellen M.
Compositions
Electrolytes for electrical devices
252 493, C10M13304, C10M17302
Patent
active
054746922
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a lubricant concentrate and to an aqueous lubricant solution based on fatty amines and optionally typical diluents and/or auxiliaries and additives which contain at least one polyamine derivative of a fatty amine and/or a salt of such an amine.
The invention also relates to a process for the production of the lubricant concentrate and to the use of the lubricant concentrate and the aqueous lubricant solution as chain lubricants in the food industry. More particularly, the lubricant concentrate according to the invention is used for lubricating, cleaning and disinfecting automatic chain and belt conveyor systems which are used for the filling of foods, preferably beverages, into glass and plastic bottles, cans, glasses, casks, beverage containers (KEGS), paper and cardboard containers and the like.
2. Statement of Related Art
In bottle cellars and barrel cellars of beverage factories and in the packaging of foods, the corresponding containers are normally transported on plate-type conveyor belts or other conveyor systems which are lubricated and kept clean with suitable aqueous lubricant preparations via immersion-type lubrication systems or, recently, even via automatic belt lubrication systems.
Whereas immersion-type lubrication systems present hardly any problems in regard to their performance properties and the choice of the lubricant, precipitations of poorly soluble salts and microbiological deposits in the nozzles and filters of the central lubrication systems can seriously disrupt the continuous packaging of foods, particularly beverages, so that the systems always have to be switched off and cleaned after a certain period of operation.
The chain lubricants hitherto used as lubricants are based on the one hand on fatty acids in the form of their water-soluble alkali metal or alkanolamine salts or on fatty amines in the form of their organic or inorganic salts.
Whereas both classes of compounds can be used without difficulty in immersion lubrication, they show a number of disadvantages in the central chain lubrication systems typically used today. Thus, DE-A-23 13 330 describes soap-based lubricants containing aqueous mixtures of C.sub.16-18 fatty acid salts and surfactants. These soap-based lubricants have the following disadvantages: metal ions, and other ingredients of the water to form poorly soluble metal soaps, so-called primary alkaline earth metal soaps. or in the product to be packed. which represents an additional germ source, or products of high complexing agent content have to be used which is ecologically unsafe. for the bottle inspector (automatic bottle control) and to possible penetration of the lubricant into the transport container. discontinuous cleaning is always necessary. performance behavior. temperature. low temperatures. poor biodegradability. all types of plastic containers because stress cracking often occurs in the containers where these preparations are used.
Apart from these so-based lubricants, lubricants based on fatty amines are otherwise mainly used. Thus, DE-A-36 31 953 describes a process for the lubrication of chain-like bottle conveyors in bottling plants, particularly in breweries, and for cleaning the belts with a liquid cleaning preparation which is characterized in that the chain-like bottle conveyors are lubricated with belt lubricants based on neutralized primary fatty amines which preferably contain 12 to 18 carbon atoms and which have an unsaturated component of more than 10%.
EP-A-0 372 628 describes fatty amine derivatives corresponding to the following formulae: ##STR1## in which R.sup.1 is a saturated or unsaturated, linear or branched C.sub.8-22 alkyl group, --A--NH.sub.2,
In addition, lubricants based on N-alkylated fatty amine derivatives containing at least one secondary and/or tertiary amine are known from DE-A-39 05 548.
The main disadvantage of these lubricants is that they react with anions in the water, more particularly with sulfates, bicarbonates, phosphates an
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Laufenberg Alfred
Preibsch Wolfgang
Schmitz Karl-Heinz
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
McAvoy Ellen M.
Millson Jr. Henry E.
Szoke Ernest G.
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