A rosin-modified phenol resin (A) is a reaction product of a rosin (b), a phenol (c), a formaldehyde (d) and a polyol (e), wherein the rosin (b) contains 0.1 to 3.5% by mass of a monoterpene (a1) and a sesquiterpene (a2) relative to the total weight of the rosin, and Mw/Mn which is the ratio of the weight average molecular weight (Mw) and the number average molecular weight (Mn) is 10 to 60.

A rosin-modified phenol resin (A) is a reaction product of a rosin (b), a phenol (c), a formaldehyde (d) and a polyol (e), wherein the rosin (b) contains 0.1 to 3.5% by mass of a monoterpene (a1) and a sesquiterpene (a2) relative to the total weight of the rosin, and Mw/Mn which is the ratio of the weight average molecular weight (Mw) and the number average molecular weight (Mn) is 10 to 60.

The disclosure relates to adhesive compositions, including non-crosslinked resins and crosslinked/cured adhesives joining substrates, as well as related methods for making the compositions and articles. Compared to a conventional phenol (P) and formaldehyde (F) resin, the disclosed methods and compositions use lignin (L) and higher aldehydes (A) as corresponding replacements to provide an analog to a conventional PF resin with biobased reactants. Due to the differing reactivity of the LA components compared to the PF components, the initial condensation reaction between ortho-reactive sites in the lignin and the aldehyde is controlled to prevent gelation of the aqueous reaction mixture while reacting substantially all of the LA reactants to provide a non-crosslinked resin reaction product. The resin reaction product can then be cured at high temperature/high pressure conditions to provide a crosslinked adhesive, for example joining two substrates.

A rosin-modified phenol resin (A) is a reaction product of a rosin (b), a phenol (c), a formaldehyde (d) and a polyol (e), wherein the rosin (b) contains 0.1 to 3.5% by mass of a monoterpene (a1) and a sesquiterpene (a2) relative to the total weight of the rosin, and Mw/Mn which is the ratio of the weight average molecular weight (Mw) and the number average molecular weight (Mn) is 10 to 60.

A method for making a multi-part resin system includes forming a lignin-formaldehyde resin, forming a phenol-formaldehyde resin, and mixing the lignin-formaldehyde resin and the phenol-formaldehyde to form the multi-part resin system.

A method for making a multi-part resin system includes forming a lignin-formaldehyde resin, forming a phenol-formaldehyde resin, and mixing the lignin-formaldehyde resin and the phenol-formaldehyde to form the multi-part resin system.

The present invention relates to a novolac-type phenolic resin synthesis process in which there is the addition of lignin, to a novolac-type phenolic resin comprising lignin, and to the use of said phenolic resin.

The present invention relates to a novolac-type phenolic resin synthesis process in which there is the addition of lignin, to a novolac-type phenolic resin comprising lignin, and to the use of said phenolic resin.

Provided are a curing accelerator for an oxidative polymerization type unsaturated resin having a high curing accelerating ability, and a printing ink and a coating material. Specifically, there are provided a curing accelerator for an oxidative polymerization type unsaturated resin, containing a metal complex () having an anion compound () represented by the following structural formula (1-1) or (1-2) as a ligand: ##STR00001##
wherein R.sup.1 is any one of a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, a hydrocarbon group which may have a substituent, a hydrocarbon oxy group which may have a substituent, and a hydrocarbon oxycarbonyl group which may have a substituent, m is 0 or an integer of 1 to 3, n is 0 or an integer of 1 to 6, and X is any one of a carboxylate group, a hydrogen atom, and the R.sup.1 group.

A method for producing a resin for ink which includes reacting a lignin, a phenol, and an aldehyde so as to obtain a lignin-containing resol phenolic resin; and reacting the obtained lignin-containing resol phenolic resin with a rosin-based resin, and polyhydric alcohol.