The first one contains six times greater amount of phthalic anhydride
than the composite material [M.sub.7][A.sub.2][PA.sub.1]-BT 10% w/w [8, 9].
The major components for this resin are phthalic anhydride
and 2-propenal (acrolein).
Abstract Water-soluble hydroxyl functionalized hyperbranched polyester (WH-HP) resin was synthesized using pentaerythritol, pyromellitic dianhydride, phthalic anhydride
, and 1,1,1-tris(hydroxymethyl) propane.
About 94% of worldwide demand for orthoxylene originate in the production of phthalic anhydride
According to the estimates, the Asia-Pacific region led the market for phthalic anhydride
with 57.0 percent share by volume at the global level in 2013, followed by Europe (20.6 percent), North America (17.0 percent), and Rest of the World (5.3 percent).
The chemicals phthalic anhydride
(PA), and adipic acid (AA) were procured from Sigma Aldrich and Acros Organics.
In the first method, we synthesized 3-isoindolo-2-yl-2- substituted quinazolinones (1-3) by irradiating the mixture of 2-alkyl-3-aminoquinazolin-4(3H)-ones and phthalic anhydride
for 8-13 min in a domestic microwave oven at interval of consecutive pulses for 30-60 seconds.
3-(Trifluoromethyl) aniline, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride, 4,4'-(4,4'-isopropylidenediphenoxy) bis(phthalic anhydride
), 4,4'-carbonyldihpthalic anhydride, 4,4'-oxydihpthalic anhydride, and 4,4'-(hexafluoroisopropylidene)bis(4-phenoxy aniline) were all purchased from Aldrich and used as received.
(Ph[A.sub.n]) (99.98%) was purchased from Arab lab, Dubai, UAE.
For example, HMP is an enteric polymer manufactured from the esterification of hypromellose with phthalic anhydride
. HMP is a large molecule with a typical number aver-age molecular weight in the range of 80,000-130,000 Da.
At higher temperatures, it produced water and decene - which is used in the production of detergents, while at low temperatures, the reaction produced "oxygenated aromatic molecules", including phthalic anhydride
, used in the dyeing industry, and coumarin which is used to produce blood-thinning drugs.
The increase in sales in CM&C was due to higher sales volumes of carbon pitch, carbon black feedstock, and creosote combined with higher prices for carbon pitch and phthalic anhydride
, which more than offset lower volumes for phthalic anhydride
and lower prices for naphthalene.