Viscometric properties improver

Patent metadata

Field	Value
Publication number	US-10968170-B2
Application number	US-201716098999-A
Country	US
Kind code	B2
Filing date	May 9, 2017
Priority date	May 25, 2016
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

The present invention relates to a viscometric properties improver capable of improving the fuel efficiency of an internal combustion engine, and an additive composition for a liquid coolant containing the viscometric properties improver. [1] A viscometric properties improver consisting of a compound (A) represented by the following formula (1) and a compound (B) represented by the following formula (2), and [2] an additive composition for a liquid coolant containing the same:

R 1 O R 2 O m SO 3 M  (1)

R 3 O—SO 3 M  (2)
wherein R 1 and R 3 are the same as or different from each other and each represent a linear or branched alkyl group or alkenyl group having 12 or more and 24 or less carbon atoms; R 2 represents an ethylene group or a propylene group; m represents an addition molar number of R 2 O of 1 or more and 15 or less; and M represents a cation or a hydrogen atom.

First claim

The invention claimed is:

1. An additive composition for a liquid coolant, comprising
a compound (A) represented by the following formula (1) and a compound (B) represented by the following formula (2):
R 1 O R 2 O m SO 3 M  (1)

R 3 O—SO 3 M  (2)

wherein R 1 and R 3 are the same as or different from each other and each represent a linear or branched alkyl group or alkenyl group having 16 or more and 24 or less carbon atoms; R 2 represents an ethylene group or a propylene group; m represents an addition molar number of R 2 O of 1 or more and 15 or less; and M represents a cation or a hydrogen atom,
a non-freezability additive, an anticorrosion additive, and a rust inhibitor, and
water.

2. The additive composition for a liquid coolant according to claim 1 , wherein a mass ratio ((A)/(B)) of the compound (A) and the compound (B) is 0.01 or more and 50 or less.

3. The additive composition for a liquid coolant according to claim 1 , further comprising ion-exchanged water.

4. The additive composition for a liquid coolant according to claim 1 , further comprising one or more kind selected from an alkali metal salt and an alkali metal hydroxide other than the compound (A) and the compound (B).

5. The additive composition for a liquid coolant according to claim 1 , wherein the liquid coolant is a liquid coolant for an internal combustion engine.

6. The additive composition for a liquid coolant according to claim 1 , wherein
the compound (A) is one or more kind selected from C 18 H 37 O—(CH 2 CH 2 O) 3 —SO 3 Na, C 18 H 37 O—(CH 2 CH 2 O) 3 —SO 3 K, C 22 H 45 O—(CH 2 CH 2 O) 4 —SO 3 Na, and C 22 H 45 O—(CH 2 CH 2 O) 4 —SO 3 K.

7. The additive composition for a liquid coolant according to claim 1 , wherein
the compound (B) is one or more kind selected from C 18 H 37 O—SO 3 Na, C 18 H 37 O—SO 3 K, C 22 H 45 O—SO 3 Na, and C 22 H 45 O—SO 3 K.

8. A liquid coolant, comprising the additive composition according to claim 1 , wherein the shear viscosity at 25° C. of the liquid coolant is from 5 to 200 mPa·s and the shear viscosity at 100° C. of the liquid coolant is 2 mPa·s or less.

9. The liquid coolant according to claim 8 , wherein
the compound (A) is at least one compound selected from C 18 H 37 O—(CH 2 CH 2 O) 3 —SO 3 Na, C 18 H 37 O—(CH 2 CH 2 O) 3 —SO 3 K, C 22 H 45 O—(CH 2 CH 2 O) 4 —SO 3 Na, and C 22 H 45 O—(CH 2 CH 2 O) 4 —SO 3 K, and
the compound (B) is at least one compound selected from C 18 H 37 O—SO 3 Na, C 18 H 37 O—SO 3 K, C 22 H 45 O—SO 3 Na, and C 22 H 45 O—SO 3 K.

Assignees

• Kao Corp

Inventors

• Kamenoue Shogo

Classifications

• C09K5/10 Primary

  Liquid materials · CPC title

• F01P3/20

  Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) · CPC title

• F01P3/00

  Liquid cooling · CPC title

• F01P2003/001

  Cooling liquid · CPC title

• C07C305/10 Primary

  being further substituted by singly-bound oxygen atoms · CPC title