Esterification solution was prepared by addition of acid anhydride
to a mixture of 50 mL C[H.
It's the body's way of breaking down the alcohol and, for most of us, acid anhydride
disappears from our bloodstream almost immediately.
By forming a propionic acid anhydride
derivative, resolution of morphine and codeine from common interferences was greatly improved (Figure 3).
5% (b) Vinyltriethoxysilane [greater than or equal to]98% Styrene [greater than or equal to]99% Maleic acid anhydride
[greater than or equal to]99.
A granulate of wood or some other cellulose-containing material, pieces or particles of said material being at least partially esterified with 10-50% of a dicarboxylic acid anhydride
and then impregnated with 2-25% of a polyol, the granulate being stable in storage and being possible to hot press or hot form later.
These findings and speculations have important implications for protection against, and disposal of, the acid anhydride
type nerve gases, of which soman is an important example.
The present invention is a thermoplastic elastomer composition comprising an ethylene-vinyl alcohol copolymer and a modified rubber dispersed in the ethylene-vinyl alcohol copolymer, wherein the modified rubber has an acid anhydride
group or epoxy group and is dynamically crosslinked by a compound having at least two amino groups.
has obtained a patent for a method for imparting defoaming property to a baking finish type topcoat paint containing an acid anhydride
curing agent, a melamine resin curing agent or a glycidyl-containing acrylic resin/acid anhydride
curing agent for motor vehicles comprised of the step of adding a copolymer of 2%-50% by weight of a polymerizable monomer capable of forming a copolymer having isocyanate groups which can react with a binder resin in thermosetting paint or a polymerizable monomer capable of forming a copolymer having groups capable of producing isocyanate groups which can react with a binder resin in thermosetting paint during baking step of the same paint, and 98%-50% by weight other monomer or polymer reactable with the polymerizable monomer or to the topcoat paint.
Highly suitable polycarboxylic acids are, for instance, phthalic acid anhydride
, terephthalic acid anhydride
, trimellitic acid, adipic acid, and maleic acid.