公开(公告)号：GB945638A

公开(公告)日：1964-01-02

申请号：GB3728162

申请日：1962-10-02

Applicant: BASF AG

Inventor： SCHWEN ROLAND ,  MUENSTER WILHELM

IPC: C09K5/20 ,  C23F11/08

Abstract: An antifreeze comprises one or more 1 : 2 diols (ethylene glycol and 1 : 2 propylene glycol), 0.2% borax, 0.1 to 1% sodium nitrate, 0.1 to 1% sodium nitrite, 0.01 to 0.1% sodium silicate, 1 to 4% sodium benzoate and 0.01 to 0.5% benzotriazole, all percentages being by weight based on the diol. The sodium ions may be partially or wholly replaced by one or more alkali metal or ammonium ions. Other materials which may be present are sodium mercaptobenzothiazole, phenylglycine potassium or sodium salt, glycocoll, alanine, isatic acid, isatin, cyclic glycol carbonates derived from ethylene or propylene (1,2-propylene glycol carbonate), aliphatic alcohols (tridecanol), amines (cyclohexylamine) and sodium hydroxide.

公开(公告)号：CA570987A

公开(公告)日：1959-02-17

申请号：CA570987D

Applicant: BASF AG

Inventor： MUENSTER WILHELM ,  DREHER ERICH

公开(公告)号：GB1066333A

公开(公告)日：1967-04-26

申请号：GB3469463

申请日：1963-09-03

Applicant: BASF AG ,  DAIMLER BENZ AG

Inventor： MUENSTER WILHELM ,  SCHWEN ROLAND ,  EITEL MAX

IPC: C09K5/10 ,  C09K5/20 ,  C23F11/08 ,  C23F11/10 ,  F01P11/00 ,  F02B3/06

Abstract: Cavitation in high speed diesel engine cooling systems is inhibited by circulating a cooling liquid comprising (a) water or an aqueous solution of a member of the group consisting of non-polymerized saturated aliphatic alcohols completely mixible in water in all proportions and (b) 0.1 to 10% by weight of the total, of a cavitation inhibiting organic compound, other than a member of the group of alcohols specified in (a), containing one or more hydrophilic groups and being at least partially soluble in component (a). When component (b) has a molecular weight below 1500 its solubility in (a) at 60-120 DEG C. must be 0.1 to 10% by weight. Component (a) may be a conventional anti-freeze solution containing 5 to 50% by weight of an alcohol containing 2 to 4 carbon atoms and 2 to 3 hydroxyl groups such as ethylene glycol, propanediol and glycerol. The hydrophilic groups of component (b) are hydroxyl groups, ether bridges, carboxylic acid amide groups, lactam groups, amino groups or carboxylate groups. Suitable organic compounds for (b) are polyalkylene glycols with 2 to 4 carbon atoms between the ether bridges preferably with molecular weights between 300 and 15,000; also compounds with a hydrocarbon structure containing 1 to 80 alkylene oxide groups (-CnH2nO-, where n is 2 to 4) or at least one of the hydrophilic groups formed as reaction products of e.g. ethylene oxide or propylene oxide with stearic amide, oleic acid monoethanulamide, caproamide, oleylamine, laurylamine, lauryl alcohol, capryl alcohol, stearyl alcohol, glycerol, caprolactam, laurolactam, polycaprolactam, polylaurolactam. Other compounds are polyesters of dicarboxylic acids, e.g. succinic acid, adipic acid, terephthalic acid with polyglycols; also polyvinylpyrrolidone, polyvinyl alcohol, protein such as bone glue and polysaccharides such as agar. Low molecular weight compounds are monohydric and dihydric alcohols with 6 to 20 carbon atoms, e.g. octanol-(2), 2-ethyl hexanol, lauryl alcohol, palmityl alcohol, stearyl alcohol, tridecanol. The cooling liquid may also contain 0.01 to 5% by weight of corrosion inhibitors such as borates, phosphates, alkali benzoates, nitrites, triethanolamine phosphate.ALSO:Cavitation in high speed diesel engine cooling systems is inhibited by circulating a cooling liquid comprising (a) water or an aqueous solution of a member of the group consisting of non polymerized saturated aliphatic alcohols completely mixable in water in all proportions and (b) 0.1 to 10% by weight of the total, of a cavitation inhibiting organic compound, other than a member of the group of alcohols specified in (a), containing one or more hydrophilic groups and being a least partially soluble in component (a). When component (b) has molecular weight below 1500 its solubility in (a) at 60 DEG -120 DEG C, must be 0.1 to 10% by weight. Component (a) may be a conventional anti-freeze solution containing 5 to 50% by weight of an alcohol containing 2 to 4 carbon atoms and 2 to 3 hydroxyl groups such as ethylene glycol, propanediol and glycerol. The hydrophilic groups of component (b) are hydroxyl groups, ether bridges, carboxylic acid amide groups, lactam groups, amino groups or carboxylate groups. Suitable organic compounds for (b) are polyalkylene glycols with 2 to 4 carbon atoms between the ether bridges preferably with molecular weights between 300 and 15,000; also compounds with a hydrocarbon structure containing 1 to 80 alkylene oxide groups (-Cn H2n O - , where n is 2 to 4) or at least one of the hydrophilic groups formed as reaction products of e.g. ethylene oxide or propylene oxide with stearic amide, oleic acid monoethanulamide, caproamide, oleylamine, laurylamine, lauryl alcohol, capryl alcohol stearyl alcohol, glycerol, caprolactam, laurolactam, polycaprolactam, polylaurolactam. Other compounds are polyesters of dicarboxylic acids e.g. succinnic acid, adipic acid terephthalic acid with polyglycols; also polyvinylpyrrolidone, polyvinyl alcohol, protein such as bone glue and polysaccharides such as agar. Low molecular weight compounds are monohydric and dihydric alcohols with 6 to 20 carbon atoms e.g. octanol - (2), 2-ethyl hexanol, lauryl alcohol, palmityl alcohol, stearyl alcohol, tridecanol. The cooling liquid may also contain 0.01% to 5% by weight of corrosion inhibitors such as borates, phosphates, alkali benzoates, nitrites triethanolamine phosphate.

公开(公告)号：GB1055453A

公开(公告)日：1967-01-18

申请号：GB1875564

申请日：1964-05-06

Applicant: BASF AG

Inventor： NOTTES GUENTHER ,  LIEBOLD GERT ,  MUENSTER WILHELM

IPC: C09K3/18

Abstract: An agent for thawing surfaces covered with ice and/or snow consists of or contains a mixture of at least one water-soluble monohydric alcohol, at least one water-soluble polyhydric alcohol, and formamide and/or a formamide derivative in which the proportion of monohydric alcohol or alcohols is from 40 to 90% by weight and the proportion of formamide or derivative thereof is from 10 to 60% by weight, both with reference to the total amount of alcohols. From 5 to 50% of a monoether of ethylene glycol or diethylene glycol may also be included. The monohydric alcohol may be methanol, ethanol, propanol or isopropanol: the polyhydric alcohol may be glycerin or ethylene, propylene, butylene, hexylene, diethylene, triethylene, dipropylen or tripropylene glycol. A suitable formamide derivative is an alkyl formamide such as monomethyl or dimethyl formamide. As corrosion inhibitors, a fatty acid polyamide and an acetylene derivative may be included.