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AssigneesHitachi, Ltd., Hitachi Chemical Company, Ltd.
InventorsShunichi Numata, Hitoshi Yokono, Junji Mukai, Tadashi Muroi, Mineo Nakano, Mikio Manabe
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A thermosetting resin composition is derived from a modified novolak-type resin obtained by the reaction of a phenolic compound with an aralkyl halide or ether. The thermosetting resin is composed of 20 to 80 parts by weight of a thermosetting resin prepared by reacting a modified novolak-type resin represented by, for example, the general formula, ##SPC1## Wherein R is an aromatic nucleus, with formaldehyde in the presence of a basic catalyst, and, in admixture therewith, 80 to 20 parts by weight of a thermosetting resin prepared by reacting the above-mentioned modified novolak-type resin with hexamethylenetetramine. The thermosetting resin is quickly curable and gives a cured article excellent in heat resistance.
A thermosetting resin mixture composition which comprises a first thermosetting resin prepared by reacting with a formaldehyde source selected from the group consisting of formaldehyde, paraformaldehyde, trioxane, and polyoxymethylene in the presence of a basic catalyst a modified novolak-type resin obtained by reacting a mono or multi-valent phenolic compound having at least two active hydrogen atoms with an aralkyl ether or alcohol represented by the general formula R(CH.sub.2 OR').sub.n or an aralkyl halide represented by the general formula R(CH.sub.2 X).sub.n, wherein R is a group selected from phenyl, diphenyl ether, diphenyl methane, diphenyl ketone, diphenyl sulfone and naphthalene groups and substituted groups thereof, R' is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X is a halogen atom, and n is 2 to 3, and a second thermosetting resin prepared by blending the above-mentioned modified novolak-type resin with hexamethylenetetramine, the amount of said first resin being 20 to 80 parts by weight, and the amount of said second resin being 80 to 20 parts by weight.
A thermosetting resin mixture composition which comprises a first thermosetting resin prepared by reacting with a formaldehyde source selected from the group consisting of formaldehyde, paraformaldehyde, trioxane, and polyoxymethylene in the presence of a basic catalyst a modified novolak-type resin obtained by reacting 1.3 to 3 moles of a mono- or multi- valent phenolic compound having at least two active hydrogen atoms with 1 mole of an aralkyl ether or alcohol represented by the general formula R(CH.sub.2 OR').sub.n or 1 mole of an aralkyl halide represented by the general formula R(CH.sub.2 X).sub.n, wherein R is a group selected from phenyl, diphenyl, diphenyl ether, diphenyl methane, diphenyl ketone, diphenyl sulfone and naphthalene groups and substituted groups thereof, R' is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X is a halogen atom, and n is 2 to 3, and a second thermosetting resin prepared by blending the above-mentioned modified novolak-type resin with hexamethylenetetramine, the amount of said first resin being 30 to 70 parts by weight, and the amount of said second resin being 70 to 30 parts by weight.
A thermosetting resin mixture composition which comprises a first thermosetting resin prepared by reacting with a formaldehyde source selected from the group consisting of formaldehyde, paraformaldehyde, trioxane, and polyoxymethylene in the presence of a basic catalyst a modified novolak-type resin obtained by reacting 1.3 to 3 moles of phenol with 1 mole of an aralkyl ether or alcohol represented by the general formula R(CH.sub.2 OR').sub.n or 1 mole of an aralkyl halide represented by the general formula R(CH.sub.2 X).sub.n, wherein R is a group selected from phenyl, diphenyl, diphenyl ether, diphenyl methane, diphenyl ketone, diphenyl sulfone and naphthalene groups and substituted groups thereof, R' is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X is a halogen atom, and n is 2 to 3, and a second thermosetting resin prepared by blending the above-mentioned modified novolak-type resin with hexamethylenetetramine, the amount of said first resin being 30 to 70 parts by weight, and the amount of said second resin being 70 to 30 parts by weight.
Dependencies are inferred from the claim text.