Abstract: The present disclosure relates to wood pulp fiber- or cellulose filament-reinforced bulk molding compounds, composites, compositions and methods for preparation thereof. The composition comprises a resin; about 0.5 to about 15 wt. % of a 5 cellulosic reinforcement wherein the cellulosic reinforcement is chosen from wood-pulp fibers, cellulose filaments (CF) and a mixture thereof; and about 30 to about 65 wt. % of a filler.

Abstract: The present disclosure relates to composite materials comprising a resin and at least one sheet that comprise optionally cellulose filaments (CF), fillers and optionally reinforcing fibers as well as methods for the preparation thereof. The methods comprise impregnating the sheets comprising the cellulose filaments, fillers and optionally the reinforcing fibers or a stack thereof with resin. The composite materials can optionally comprise at least one other sheet, the at least one other sheet being different from the at least one sheet and comprising fibers chosen from wood pulp, fiberglass, natural fibers and mixtures thereof. The sheet can also be in the form of a panel of a preform.

Abstract: A method is described for attaining high levels of loading of calcium carbonate fillers in the lumens of wood pulp fibers. The pulp is pretreated with a cationic polymer prior to being impregnated with the filler. Different conditions of pH and temperature are specified depending on whether the filler is a precipitated calcium carbonate or a ground calcium carbonate. The lumen-loaded pulps are used to make novel products with advantages in higher filler retention and sheet strength over conventionally made papers.