ANTIFREEZE CONCENTRATE, COOLANT COMPOSITION, AND PREPARATION THEREOF

WIPO Patent Application WO/2012/021204

A3

An antifreeze composition having improved thermal stability is provided. In one embodiment, the antifreeze concentrate composition comprises from 50 to 99.8 wt. % of a glycol-based freezing point depressant selected from the group of: alkylene glycols, glycol monoethers, glycerins, and mixtures thereof; 0.01 to 10 wt. % of at least one of a 2-ethylhexanoic acid, isononanoic acid and 3,5,5-trimethylhexanoic acid; and 0.01 to 5 wt. % of at least one of octanoic acid, nonanoic acid, decanoic acid, undecanoic acid, dodecanoic acid, neodecanoic acid, benzoic acid, 2-hydroxybenzoic acid, p-terbutylbenzoic acid, and mixtures thereof. In one embodiment, the composition is employed as a concentrate in admixture with 10 to 90 wt. % water. In one embodiment no more than one dicarboxylic acid is used as an additive. In another embodiment no dicarboxylic acid is present.

WO/2001/032801	ANTIFREEZE CONCENTRATES ON THE BASIS OF DICARBOXYLIC ACIDS, MOLYBDATE AND TRIAZOLES OR THIAZOLES AND COOLANT COMPOSITIONS CONTAINING THESE CONCENTRATES
WO/2002/006420	NON-AQUEOUS HEAT TRANSFER FLUID AND USE THEREOF
WO/2017/080542	COOLANT CONCENTRATE CONTAINING SILICATE

LIEVENS SERGE S (BE)
DEKIMPE JURGEN P (BE)

PCT/US2011/038192

April 05, 2012

May 26, 2011

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CHEVRON USA INC (US)
LIEVENS SERGE S (BE)
DEKIMPE JURGEN P (BE)

C09K5/20; C09K3/18

US20090001312A1	2009-01-01
US4851145A	1989-07-25
EP0308037B1	1993-10-06
US4647392A	1987-03-03
US5366651A	1994-11-22

PRATER, Penny, L. et al. (Law DepartmentPost Office Box 600, San Ramon CA, US)

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