A major care in environmental preservation is recycling different wastes. In our case we intend to reuse plastic wastes (from plastic bags and PETs) and wood flour from timber processing making a hybrid material used as walls in civil constructions. The main problems of the hybrid materials obtained are wood water sensitivity and the poor compatibility with the main matrix polymers. An important problem in developing the new hybrid material is to find a suitable coupling agent. The technological experiments were three folded using tow types of hardboard from wood wastes (derived from the disintegration of melamine chipboard-MCB), polyethylene (PE) wastes and: 1.Ureaformaldehidic resin-type URELIT S and oxalic acid solution, 2. Ag doped TiO2 nanopowder-0,1% and size particles <80nm, 3. Maleic anhydride(MA) with 10 wt%. In the literature there are frequently used maleic anhydride grafted polyethylene, maleic anhydride grafted polypropylene, maleated elastomers and different low molecular compounds such as isocyanates, silanes, stearic acid. We considered that maleic anhydride copolymers containing a higher amount of maleic units could be suitable compatibilizer, taking into account some of their advantages: they are obtained by convenient techniques, from cheap and accessible monomers; they have regular, reproducible chemical structure; they have variable \ hydrophobic character depending on the comonomer.figureChemical structure of a binary (R1=R2 and m=n+p) or ternary (R1=R2, m≠n≠p) maleic anhydride copolymerWe present the synthesis and characterization of 2 copolymers: Synthesis of copolymer I – radical copolymerization of MA with VA in chloroform, at 75°C, for 5 h, followed by washing with chloroform and diethyl ether and drying at 40°C and reduced pressure for 24 h. Synthesis of copolymer II: Hydrolysis and neutralization of copolymer (I) with diluted NaOH, followed by diafiltration and freeze drying. Characterization made by FTIR analysis. The nanomaterial used was obtained by sol-gel method, as oxidic powders of type Ag doped TiO2, used as additive in proportion of 0.1%. The characterization methods were optical and SEM microscopy and FTIR Finally, three wood-polymer composites were obtained and their physical and mechanical characteristics are presented in comparison with SR EN 312-2004 requirements In conclusion we present a technology to obtain a new material (wood wastes, polyethylene wastes and maleic anhydride) making possible the reinsertion of recyclable materials in economic circuit as construction material with competitive characteristics.