RESIN COMPOSITION BASED ON HIGHLY REACTIVE MODIFIED PHENOL RESIN, AND MOLDED ITEM, FIBER-REINFORCED RESIN PLATE, FRICTION MATERIAL, FOAM, ADHESIVE, CORROSIONPROOF COATING MATERIAL, AND FLAME RETARDANT

摘要

PROBLEM TO BE SOLVED: To obtain a resin compsn. which gives a molded item excellent in adhesive properties, dimensional stability, strengths, resistances to abrasion, chemicals, heat, and moisture, etc., by compounding a highly reactive modified phenol resin with a curative, the phenol resin being obtd. by polycondensing a heavy oil or pitch, a phenol, and a formaldehyde compd., each in a specified amt., in the presence of a specified amt. of an acid catalyst. ;SOLUTION: This compsn. comprises a highly reactive modified phenol resin and a curative, the phenol resin being obtd. by stirring, under heating, a mixture comprising 1 mol (calculated from the average mol.wt.) of a heavy oil or pitch, 0.3-10 mol of a phenol (e.g. phenol), 0.2-9 mol (in terms of formaldehyde) of a formaldehyde compd. (e.g. paraformaldehyde), and 0.01-3.0 mol of an acid catalyst (e.g. oxalic acid) to cause the polycondensation of the heavy oil or pitch, the phenol, and the formaldehyde compd. An example of the curative is hexamethylenetetramine.;COPYRIGHT: (C)2000,JPO