| abstract |
Paper of at least about 60% alpha -cellulose content, a basis weight of about 50-90 pounds per 3000 square foot ream, a pH of about 6.75+/-0.5 and a Gurley porosity of about 15-25 seconds per 100 c.c. of air having impregnated therein from about 55% to about 65%, by weight, based on the weight of the paper, of a beta -staged resin composition comprising A. the resinous reaction product of melamine, formaldehyde and diethylethanolamine, B. an ortho- or para-toluene sulfonamide, C. ethyleneglycol phenyl ether, D. |