Abstract: Polymer, co-polymer and/or elastomer containing paper is manufactured for a wide variety of end uses. The paper is remarkably homogeneous and retains its porosity even when it contains large quantities of polymer, co-polymer or elastomer. The latex and the fibrous slurry are mixed at the wet end in conjunction with a polyelectrolyte bridging agent, the bridging agent having a cationic charge and the latex and fibrous material having an anionic charge. In this way, the latex particles in their substantially original size become linked with the fibrous material by means of the intermediate bridging agent and without the latex undergoing any substantially coagulation or precipitation.

Abstract: There are disclosed fibrous materials useful as leather substitutes and consisting essentially of the combination of leather fibers, cellulose fibers and fibrils or fibrides of synthetic polymers having a surface area larger than 1 m.sup.2 /g.

Abstract: A method of preparing a backer for use in the production of man-made leather containing from 20 to 50% by weight of tanned collagen fibrous material.