dibasic acid

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  • noun

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an acid containing two replaceable hydrogen atoms per molecule

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References in periodicals archive ?
Raju, KVSN, "Influence of Dibasic Acids on the Properties of Modified Polyurethane Coatings.
The hydrolytic stability of the dibasic acid 1,2-cyclohexane based oligoesters was far superior (greater) than either the 1,3- or 1,4-cyclohexane diacid-based oligoesters.
DDSA (dodecenyl succinic anhydride) is offered for producing tougher, more flexible cured polymers; Succinic anhydride (SAA) is recommended for applications where a dibasic acid anhydride is desired; and HHPA (hexahydrophthalic anhydride) hardener is also recommended for curing epoxies.
The hydroxyl number of the glycolyzed product before removing the free glycol was used to determine the amount of the dibasic acid required for the polyesterification reaction.
In the early 1990s, cyclohexyl dibasic acids were proposed as replacements for the aromatic dibasic acids.
Table 4-principal compounds used in manufacture of esters Organic acids Monobasic acids Dibasic acids Tribasic acids Oleic Phthalic anhydride Trimellitic anhydride Stearic Adipic acid Citric acid Benzoic Sebacic acid Pelargonic Azelaic acid Glutaric acid Organic alcohols Monohydric Dihydric Trihydric 2-Ethylhexanol Propylene glycol Glycerol Isodecanol 1,3 butandiol Trimethylolpropane 6-10 linear alcohols 1,4 butandiol Benzyl alcohol Isononyl alcohol
The epoxide functional group in veronia oil is typically cross-linked with such dibasic acids as sebacic acid, to form crosslinked polyesters.