. . "2009Az Electronic Materials Usa Corp.a formal or acetal protected vinyl acetate-vinyl alcohol copolymer, a derivataive of melamine, urea, guanamine, glycoluril or amino resin crosslinking agent; water as solvent or mixed with organic solvents, such as methanol, ethylene glycol, monomethyl ether, acetone etc; for resist pattern; electronicsUS769155622 Jun 20056 Apr 2010Az Electronic Materials Usa C" . .