A resin composition for a printed wiring board containing a cyanate compound (A); a maleimide compound (B); and a benzoguanamine compound (C) having an aminomethyl group represented by the following general formula (1): ##STR00001##
wherein R is a hydrogen atom or a substituent selected from a group consisting of a hydrocarbon group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, an aryloxy group having 6 to 10 carbon atoms, a hydroxyl group, an amide group, and a halogen atom, and n is an integer of 1 to 2.

A resin composition for a printed wiring board containing a cyanate compound (A); a maleimide compound (B); and a benzoguanamine compound (C) having an aminomethyl group represented by the following general formula (1): ##STR00001##
wherein R is a hydrogen atom or a substituent selected from a group consisting of a hydrocarbon group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, an aryloxy group having 6 to 10 carbon atoms, a hydroxyl group, an amide group, and a halogen atom, and n is an integer of 1 to 2.

A sulfonatocalixarene tanning agent for leather tanning and a preparation method comprises: using resorcinol and aldehyde monomers as raw materials for the tanning agent; adding an ethanol solution into the resorcinol, dropwise adding an inorganic strong acid catalyst and aldehyde derivatives, heating to react, cooling, carrying out suction filtration, repeatedly washing with ethanol and distilled water, and drying to obtain resorcinol calixarene; and weighing the resorcinol calixarene, and adding a sulfonating agent to react, thereby obtaining a sulfonatocalixarene tanning agent aqueous solution.

A sulfonatocalixarene tanning agent for leather tanning and a preparation method comprises: using resorcinol and aldehyde monomers as raw materials for the tanning agent; adding an ethanol solution into the resorcinol, dropwise adding an inorganic strong acid catalyst and aldehyde derivatives, heating to react, cooling, carrying out suction filtration, repeatedly washing with ethanol and distilled water, and drying to obtain resorcinol calixarene; and weighing the resorcinol calixarene, and adding a sulfonating agent to react, thereby obtaining a sulfonatocalixarene tanning agent aqueous solution.

Disclosed herein are compositions and methods of making phenolic compounds and phenolic resins. The resins include multifunctional epoxies, amino glycidyl derivatives, alkanoate derivatives, alkyl ether derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of novolac resin.

Disclosed herein are compositions and methods of making phenolic compounds and phenolic resins. The resins include multifunctional epoxies, amino glycidyl derivatives, alkanoate derivatives, alkyl ether derivatives, and multi-functional amines prepared from hydroxymethyl derivatives of novolac resin.

Epoxy adhesive compositions contain a heat-activatable catalyst. The heat-activatable catalyst includes a tertiary amine catalyst and a novolac resin that has a weight average molecular weight of at least 3000. One-component epoxy adhesive formulations that contain the heat-activatable catalyst have unexpectedly good storage stability.

In order to provide a curing agent (alkoxylated resole-type phenolic resin) with which a coating film having high hot-water resistance, high workability, and high adhesion to metals may be formed without limiting the main agent to be a bisphenol-A-type epoxy resin, the present invention provides a method for producing an alkoxylated resole-type phenolic resin. The method includes reacting a phenol (a1) including meta-cresol with an aldehyde (a2) in the presence of a basic compound to prepare a resole-type phenolic resin (A); and reacting the resole-type phenolic resin (A) with an alcohol (B) in the presence of an acidic compound having an acid dissociation constant (pKa) of 0 or less.

In order to provide a curing agent (alkoxylated resole-type phenolic resin) with which a coating film having high hot-water resistance, high workability, and high adhesion to metals may be formed without limiting the main agent to be a bisphenol-A-type epoxy resin, the present invention provides a method for producing an alkoxylated resole-type phenolic resin. The method includes reacting a phenol (a1) including meta-cresol with an aldehyde (a2) in the presence of a basic compound to prepare a resole-type phenolic resin (A); and reacting the resole-type phenolic resin (A) with an alcohol (B) in the presence of an acidic compound having an acid dissociation constant (pKa) of 0 or less.

The invention relates to an in-situ process for preparing an alkylphenol-aldehyde resin. The process comprises the step of providing a raw alkylphenol composition. The raw alkylphenol composition comprises one or more alkylphenol compounds and at least about 1 wt % phenol. Each alkylphenol compound has one or more alkyl substituents. The raw alkylphenol composition is reacted directly, without pre-purification, with one or more aldehydes to form an in-situ alkylphenol-aldehyde resin. The invention also relates to an in-situ alkylphenol-aldehyde resin formed from the in-situ process, and its use in a tackifier composition and rubber composition. The tackifier composition and rubber composition containing the in-situ alkylphenol-aldehyde resin show, inter alia, improved tack performance.