Abstract: An improved modified phenol-formaldehyde resin, and a process for its preparation, which contains lignosulfonates is described. Typically, the lignosulfonates are in the form of black liquor. These resins are made by including with the phenol a small amount of potassium ferricyanide. Unlike the known processes utilizing black liquors and the like, this process appears to be far less susceptible to the inherent variability of these liquors. These resins can be easily converted into a solid by spray drying, and find use as adhesives, for example in board products.

Abstract: A two-part pack, and method for its preparation, from which a phenol-formaldehyde resin foam may be prepared, which system comprises in the first part of the pack a phenol-formaldehyde resin, a blowing agent which is an inert, low boiling liquid, an effective amount of a nitrogenous modifier capable of permitting dispersion of the blowing agent in the resin, and a surfactant; and in the second part of the pack an acid catalyst system dispersed in a liquid polyhydroxy compound, in a weight ratio of polyhydroxy compound to acid catalyst of at least 1:1. These two-part packs enable simpler handling and placement techniques being shelf storable, compared to the known shelf storable systems which involve three, or more, components.

Abstract: Modified phenol-formaldehyde resins, and processes for their preparation, are described wherein board or paper pulping process waste liquor is used as the modifier. The resins may contain, based on solids contents of both resin and waste liquor, from 1:10 to 10:1 parts by weight. These resins are cheaper than conventional resins and also use the waste-liquor without any purification step.

Abstract: An improved process for the preparation of alkoxylated formaldehyde-amino compound resins. By using a sequential procedure, and an alkanol of up to 8 carbon atoms it is possible to remove both the water in the aqueous formaldehyde used and the water from the alkoxylation reaction azeotropically. The products of this invention afford resins of better quality, especially in terms of color and clarity, than the products derived from alcoholic formaldehyde solutions.

Abstract: A two component system, and method for its preparation, from which a phenol-formaldehyde resin foam may be prepared, which system comprises in a first component a phenol-formaldehyde resin, a blowing agent which is an inert, low boiling liquid, an effective amount of a nitrogenous modifier capable of permitting dispersion of the blowing agent in the resin, and a surfactant; and in a second component an acid catalyst system dispersed in a liquid polyhydroxy compound, in a weight ratio of acid catalyst to polyhydroxy compound of at least 1:1. These systems enable simpler handling and placement techniques being shelf storable, compared to the known shelf storable systems which involve three, or more, components.