Oblon, Spivak, McClelland, Maier, & Neustadt
Modified phenolic resin from formaldehyde polymer, phenol and oil or pitch
 A process for producing a modified phenolic resin comprises heating (a) petroleum heavy oil or pitch and (b) a formaldehyde polymer in a molar ratio of formaldehyde:oil or pitch of from 1 to 15:1 in the presence of an acid catalyst, adding phenol in a molar ratio of phenol:oil or pitch of from 0.5 to 5:1 to form a crude modified phenolic resin, and purifying by performing in optional sequence (i) a treatment with an aliphatic or alicyclic hydrocarbon to remove unreacted components and (ii) an extraction with a solvent wherein the catalyst has a solubility of 0.1 or less to remove the catalyst. 
Kashima Oil Co., Ltd.
C C C H C C
C08L C08G C08G H01B C08G C08L
additional inventional inventional inventional inventional inventional
Tomoaki Masao Masahiro Hiromi Haruhiko
Fujii Tashima Tsumura Miyasita Takeda