An object is to establish a technique for producing a resin composite material at low cost. A resin composition contains cellulose fibers, a fibrillation aid, and a resin.

The invention relates to a biosourced polymer obtained by dual chemical functionalization of chitosan, usable for catalytic carbonation of cyclic ethers by means of carbon dioxide, and a binder composition for creating layers and/or coatings for road construction and/or civil engineering, marking materials, or sealing or insulation materials. Said composition contains a polyhydroxyurethane polymer binder resulting from the reaction of at least one polyamine with at least one polycyclocarbonate. Said polycyclocarbonate was obtained by carbonating a (cyclic) poly(ether) with carbon dioxide catalyzed by said biosourced polymer.

A drying-type joint compound and related methods, the drying-type joint compound having a lowered friction coefficient and formulated with gypsum powder having the median particle size (D50) of at least about 20 m, preferably the gypsum powder has a D10 greater than 5 m, wherein the drying-type joint compound further comprises a binder; one or more clays; a cellulosic thickener; and an additive.

A drying-type joint compound and related methods, the drying-type joint compound having a lowered friction coefficient and formulated with gypsum powder having the median particle size (D50) of at least about 20 m, preferably the gypsum powder has a D10 greater than 5 m, wherein the drying-type joint compound further comprises a binder; one or more clays; a cellulosic thickener; and an additive.