Ammonia → Phenol, 2-methyl-, ammonium salt (1:1)
反応式
[CH:1]1[C:6]([OH:7])=[CH:5][CH:4]=[C:3](C)[CH:2]=1.[CH2:9]=O.[NH3:11]>>[NH3:11].[C:5]1([CH3:9])[C:6]([OH:7])=[CH:1][CH:2]=[CH:3][CH:4]=1参加物
4
実験手順
A mixture of 1.0 mole of p-cresol, 1.2 moles of formaldehyde and 0.2 mole of ammonia is heated on a water bath to form an ammonia-cresol base resin. A quantity (40 parts) of this resin and 60 parts of a bisphenol-A type epoxy resin (Epikote® 1007 manufactured by Shell Chemical Company) are dissolved in a mixed organic solvent made up of equal amounts of methylisobutyl ketone and methylethyl ketone to form a base resin solution. Next, a maleic anhydride-modified olefin resin having 74.9% crystallinity and a degree of modification of 30.5 mg/100 g is dissolved in hot xylene to form a 10% solution. This solution is added to the base resin solution with sufficient agitation so that the amount of modified olefin resin added to the base resin is 20% (solids) based on the base resin. In this way, a primer coating composition or paint having a total solids content of about 30% is obtained.