Abstract: The invention relates to a compound of a thermoplastic synthetic material and a strengthening components whereby the technical problem of indicating a high-grade compound work material at low production cost, in particular for outdoor application has been solved in that the thermoplastic synthetic material is a synthetic polyester, preferably a polyethylene terephthalate (PET), and the strengthening components is an organic filler, preferably fine-particle wood or wood fibers. The invention also relates to the production of structural parts from the component as well as the structural parts themselves.

Abstract: The invention relates to the impregnation of wood by a solvent-free melt of modified natural resin which is solid at ambient temperature. Besides the modified natural resin, melts according to the invention may comprise wax and further additives. The melting point of the wax is preferably above 80° C. The addition of wax elevates the softening point and reduces the viscosity of the melt. Melts according to the invention do not tend to discolor even at the given temperatures of the loading treatment so that the wood treated with a melt of modified natural resin mainly retains its natural appearance.

Abstract: The invention relates to the impregnation of wood by a solvent-free melt of modified natural resin which is solid at ambient temperature. Besides the modified natural resin, melts according to the invention may comprise wax and further additives. The melting point of the wax is preferably above 80° C. The addition of wax elevates the softening point and reduces the viscosity of the melt. Melts according to the invention do not tend to discolor even at the given temperatures of the loading treatment so that the wood treated with a melt of modified natural resin mainly retains its natural appearance.

Abstract: A novel, bio-degradable molding based on particles of a plant fiber material, preferably wood and/or cellulose, in particular recycled fiber material, as well as other additives, which are integrated preferably with starch and/or protein into a matrix of at least one biogenic material which has been reduced at high temperature and pressure to a molten state and undergone thermoplastic treatment, and a process for manufacturing the molding and uses thereof. The molding is substantially free of pores and the particles are at least partially impregnated with at least one resin acid (where appropriate mixed with at least one fatty acid, in particular from tall oil and/or natural resins) and preferably also with at least one fat, oil and/or wax; the total water content of the molding is no greater than 18 wt %, preferably 3-16 wt %, and in particular 4-12 wt %, while its preferred density is 0.8-1.25 t/m.sup.3.