diacid


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diacid

[dī′as·əd]
(chemistry)
An acid that has two acidic hydrogen atoms; an example is oxalic acid.
References in periodicals archive ?
Effects of the type of diol and diacid and the type and quantity of hydroxyl-terminated PDMS, etc.
It was found that more polyamide formed (16% compared to just 8%) when ENF membranes were first coated with diamine solution then with diacid chloride solution (Sample D2).
Finally, an anomeric effect was used to explain the hydrolytic instability of 1,3-cyclohexane diacid oligomers.
Studies on the film characteristics revealed that the polyurethane films based on cycloaliphatic diacid generally showed comparatively better performance properties than the polyurethane film based on aromatic and linear aliphatic diacids in general.
In addition to Elevance's commercially available C18 diacid, biosuccinic acid is being offered in larger quantities by several companies, such as Myriant, BioAmber, Corbion/BASF, and Reverdia (a DSM/Roquette joint venture), as a raw material for coating resins.
And Elevance Renewable Sciences recently announced that it has developed TPUs based on polyester polyol building blocks from a renewable, plant-based source--Elevance Inherent C18 Diacid.
a high-growth specialty chemicals company, has commercialized a bio-based diacid that will significantly broaden product portfolios across a variety of industries from automotive and electronics to medical and sporting goods.
8,535,649 B2; Chanel Parfums Beaute, Neuilly sur Seine, France, has patented cosmetic composition comprising, in a physiologically acceptable medium, at least one anhydrous gel having a viscosity of at least 180,000 cP*s at 25[degrees]C, which includes at least one oil and at least one copolymer of styrene and at least one olefin other than styrene; at least one ester obtained from a saturated or unsaturated and linear or branched aliphatic acid or hydroxy acid having from 8 to 30 carbon atoms, a linear or branched diacid having from 12 to 36 carbon atoms, and glycerol or a glycerol condensate; and optionally at most 10% by weight of wax(es).
The interference by eltrombopag is further complicated by the color of the drug (a diacid with carboxyl and phenolic functional groups), (3) which varies by solution pH and concentration--reddish brown at basic pH and yellow in acidic media (Figure, D-F).
5), (6) In comparison with small molecule polycarboxylic acids, the molecular spacing between diacid groups is considerably larger.