Binder resins for making fibre composites

摘要

The preparation of binder resins having improved flow properties in the production of curable fibre composites from natural or synthetic fibre materials based on thermocurable novolaks which contain crosslinking agents, but virtually no free monocyclic phenols involves admixing the novolaks in the melt with polyglycols and/or polycarboxylic acids or anhydrides thereof and/or acidic esters made from polyglycols and polycarboxylic acids, preferably in total amounts of up to 20% by weight, cooling the mixture to room temperature, powdering the mixture and mixing the mixture intimately with the required amount of pulverulent crosslinking agent.