isophthalic acid


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isophthalic acid

[¦ī·sō¦thal·ik ′as·əd]
(organic chemistry)
C6H4(COOH)2 Colorless crystals subliming at 345°C; slightly soluble in water, soluble in alcohol and acetic acid, and insoluble in benzene; used as an intermediate for polyester and polyurethane resins, and as a plasticizer. Also known as meta-phthalic acid.
References in periodicals archive ?
The presence of isophthalic acid and neopentyl glycol units in the polymer, inhibit close packing, increase flexibility, and create cavities into which diffusion of the dye can occur.
Isophthalic acid is the principal aromatic dibasic acid used in coatings, and adipic acid is the principal aliphatic diacid.
In a manner similar to that of the polycarbonate oligomer, an hydroxy end-capped oligomer of bishydroquinone and isophthalic acid (referred to as HQ/IPA/HQ) was prepared, having the following formula:
aPET is a copolymer containing 40 mol% isophthalic acid, 60 mol% terephthalaic acid, and 100 mol% ethylene glycol.
Polyester polyols containing isophthalic acid (PIA) weather extremely well (4) and have good stain, chemical, humidity, and corrosion resistance relative to aliphatic diacids.
Eastman Chemical's purified terephthalic acid and isophthalic acid plants previously announced for North America will be built in Kingsport, at Tennessee Eastman Division.
An isopolyester resin, based on Amoco's isophthalic acid, is used to manufacture the grating system.
Valspar has been granted a patent for a coated substrate comprised of a substrate coil, and a coating composition applied to at least one major surface of the substrate coil, wherein the coating composition is comprised of a binder comprised of a polyester resin that is formed using at least one aromatic dicarboxylic acid and using polyols comprised of at least one symmetric diol in an amount greater than 50% weight based on the total weight of polyols and at least one asymmetric diol in an amount greater than 20% weight based on the total weight of polyols, wherein the polyester resin comprises between 50-75% weight isophthalic acid based on the total weight of resin and has a glass transition temperature of at least 35[degrees]C.
It can be seen that in almost all the cases of resin-containing isophthalic acid unit, single peaks appeared and the exceptions are the cases where the mixtures of two or more initiators are used (32), some extreme initiator-promoter concentration ratios (40) and at very low temperatures (41) that might disrupt the compatibility of polyester and styrene.
Abstract A series of polyester polyol resin was synthesized by using 1,4-cyclohexanedimenthanol (1,4-CHDM) and three different diacids: 1,3-cyclohexanedicarboxylic acid (1,3-CHDA), isophthalic acid (IPA) and adipic acid (AA).
The Joliet plant produces purified isophthalic acid, used as an additive in polyester resin products and in coatings for the packaging, appliance and automotive industries; maleic anhydride, used in unsaturated polyester resins, agricultural chemicals, and automotive and consumer products; and trimellitic anhydride, used in the automotive, construction, appliance and coatings sectors.
increase for isophthalic acid in North America and Latin America.