Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1993-08-31
1996-09-03
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528153, 528155, 525132, 525134, 525135, 525137, 525390, 525534, C08G 804
Patent
active
055525091
ABSTRACT:
A phenolic resin composition herein disclosed comprises, as essential components, (i) at least one phenol resin A selected from the group consisting of residues formed through purification of bisphenol A, residues obtained by cleaving the bisphenol A-purification residue, condensates of the bisphenol A-purification residue obtained by reacting the bisphenol A-purification residue with formaldehyde and condensates of the cleavage residue obtained by reacting the cleavage residue with formaldehyde, and (ii) at least one phenolic resin B selected from the group consisting of high-boiling fraction obtained through production of bisphenol F and condensates of the high-boiling fraction obtained by reacting the high-boiling fraction with formaldehyde. The phenolic resin composition can be used in making resin-coated sand particles which do not give out a bad smell and do not generate any soot and smoke during forming a mold by the shell molding method and which have good disintegration properties without using any sand-baking process.
Iimuro Shigeru
Kitamura Takashi
Takashima Tomoko
Jones Richard L.
Mitsui Toatsu Chemicals Inc.
Seidleck James J.
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