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Cavitation inhibiting non-freezing cooling or heat-transfer liquids and use of a cavitation inhibiting additive in non-freezing cooling or heat transfer liquids
Cavitation inhibiting non-freezing cooling or heat-transfer liquids and use of a cavitation inhibiting additive in non-freezing cooling or heat transfer liquids
A Cavitation-inhibiting, nonfreezing, cooling and/or heat-transfer liquid, comprising a glycol and a cavitation inhibiting effective amount of at least one phosphonic acid of the formula H2O3P-R-PO3H2 wherein R is phenylene or C1-6-alkylene each optionally substituted by hydroxy, amino or PO3H2 groups, or of the formula IMAGE wherein R1, R2, and R3 each independently is a C1-4-alkylene group or such a group whose carbon atom chain contains one or more N atoms each of which is attached to one or two groups of the formulae R1-PO3H2, R2-PO3H2 or R3-PO3H2 as defined above.
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机译:一种防止气蚀,不冻结,冷却和/或传热的液体,包括乙二醇和抑制气蚀的有效量的至少一种式为H 2 O 3 P-R-PO 3 H 2的膦酸,其中R分别为亚苯基或C 1-6-亚烷基。任选地被羟基,氨基或PO 3 H 2基团取代,或具有式的式基团,其中R 1,R 2和R 3各自独立地为C 1-4亚烷基或这样的基团,其碳原子链各自包含一个或多个N原子其连接到如上所定义的式R1-PO3H2,R2-PO3H2或R3-PO3H2的一个或两个基团上。
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