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US 7,439,376 B2Granted
Esters with antimicrobial, bioresistant and fungal resistant properties
AssigneeTpat IP LLC
InventorThomas Daly
Life of this patent
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Abstract
A bromine/nitro moiety linked into the backbone of an ester or other compound over a wide range of occurrence rates provides antimicrobial, bio-resistant and fungal resistant properties for metal working fluids (MWF)s and other coatings. The moiety can be have the bromo and nitro groups linked to the same or different carbon atoms. The present invention also relates to urethanes, urea, amides, imides, carbonates, ethers, siloxanes, and many other types of linkages essential to MWF bases.
Claims4
An anionic surfactant of the following structure:
- where R is not equal to R′ and one of R or R′ is —SO3− and one of R or R′ is H, and where M is a cation or H.
An anionic surfactant of the following formula:
- where R is not equal to R′ and one of R or R′ is —SO3− and one of R or R′ is H and where A is not equal to A′ and one of A or A′ is —SO3− and one of A or A′ is H, and M is a cation or H.
Dependencies are inferred from the claim text.