申请人:Clariant International Ltd
公开号:EP3929269A1
公开(公告)日:2021-12-29
This invention relates to a functional fluid, comprising
(A) from 70 to 90, preferably 75 - 87 wt.-% of alkoxy glycol according to formula (I)
CH3 - O - (CH2 - CH2 - O)n -H (I)
wherein n is a number from 2 to 5, with the proviso that in at least 30 wt.-% of all compounds according to formula (I) n is 3, and
(B) less than 1.0 wt.-% of alkoxy glycol according to formula (II)
R1 - O - (CH2 - CH2 - O)m - H (II)
wherein
R1
is a C2 to C8 alkyl residue,
m
is a number from 2 to 6,
(C) from 8 to 25, preferably 12 - 23 wt.-% of at least one compound according to formula (III)
H - O - (CH2 - CH2 - O)k - H (III)
wherein k is a number of 2 or higher, with the proviso that in at least 80 wt.-% of all compounds according to formula (III) k is 2 or 3,
(D) from 0.4 to 6 wt.-% of at least one additive, selected from the group consisting of corrosion inhibitors, alkalinity agents, aging protection agents, defoamers and lubricants, the fluid comprising at most 3 wt.-% of an ester between boric acid and a glycol or alkyl polyglycol compound.
本发明涉及一种功能性流体,包括
(A) 70 至 90%,最好是 75 至 87 wt.-%的式 (I) 烷氧基乙二醇
CH3 - O - (CH2 - CH2 - O)n -H (I)
其中 n 是 2 至 5 的数字,但在所有符合式 (I) 的化合物中至少有 30% 的 n 是 3,以及
(B) 少于 1.0 重量-%的根据式(II)的烷氧基乙二醇
R1 - O - (CH2 - CH2 - O)m - H (II)
其中
R1
是 C2 至 C8 烷基残基、
m
是 2 至 6 的数字、
(C) 8-25%,最好是 12-23%的至少一种符合式(III)的化合物
H - O - (CH2 - CH2 - O)k - H (III)
其中 k 为 2 或更大的数字,但至少 80 重量-%的所有根据式(III)的化合物 k 为 2 或 3、
(D) 0.4 至 6 wt.-%的至少一种添加剂,选自腐蚀抑制剂、碱度剂、老化保护剂、消 泡剂和润滑剂组成的组,该流体包含至多 3 wt.-%的硼酸与乙二醇或烷基聚乙二醇化合物 之间的酯。