The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8057695 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 15, 2011

Filed:

Aug. 26, 2010
Applicants:

Serge S. Lievens, Merelbeke, BE;

Jurgen P. DE Kimpe, Ghent, BE;

Inventors:

Serge S. Lievens, Merelbeke, BE;

Jurgen P. De Kimpe, Ghent, BE;

Assignee:

Chevron U.S.A. Inc., San Ramon, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A toxicological friendly antifreeze composition having improved thermal stability is provided. In one embodiment, the antifreeze composition comprises from 5 to 80 wt. % of an aqueous freezing point depressant selected from alkali metal salts of acetates, formates, proprionates, adipiates, and succinates, and mixtures thereof; 0.1 to 10 wt. % of at least one of a 2-ethylhexanoic acid, isononanoic acid and 3,5,5-trimethylhexanoic acid; and 0.1 to 10 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. The composition may be totally free of glycol, or, in an alternate embodiment, possess a glycol:non-glycol base ratio of 1:2 to 1:20.


Find Patent Forward Citations

Lievens, Serge. (2011). Antifreeze concentrate and coolant compositions and preparation thereof (U.S. Patent No. 8057695). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8057695

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