MODIFIED POLYESTER COMPOSITION AND METHOD FOR OBTAINING THEREOF Russian patent published in 2015 - IPC C08K3/20 C08L67/02 B82B3/00 B82B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to modified polyester compositions comprising polyester resin modifiers on the basis of nano oxides. Disclosed polyester composition is used as a binder, comprising polyester resin with a modifier based on nano particles of the oxides selected from SiO₂, Al₂O₃, MgO, ZrO₂, CeO₂, TiO₂, ZnO, FeO, Fe₂O₃, Fe₃O₄ and SnO, and containing a C₂-C₁₆ fragment with at least one hydroxyl group, and covalently bonded by the said hydrocarbon C₂-C₁₆ fragment with the said polyester resin; and a polyester resin modifier based on nano particles of the oxides selected from SiO₂, Al₂O₃, MgO, ZrO₂, CeO₂, TiO₂, ZnO, FeO, Fe₂O₃, Fe₃O₄ and SnO, comprising unsaturated C₂-C₂₀ groups, selected from the C₂-C₂₀ alkene, C₂-C₂₀ alkine or C₂-C₂₀ cycloalkene, covalently bonded by oxygen with the surface of the said nano particles. Disclosed method for polyester composition is used as a binder, comprising a) providing a polyester resin with a modifier based on nano particles of the oxides selected from SiO₂, Al₂O₃, MgO, ZrO₂, CeO₂, TiO₂, ZnO, FeO, Fe₂O₃, Fe₃O₄ and SnO, and containing a C₂-C₁₆ fragment with at least one hydroxyl group, and covalently bonded by the said hydrocarbon C₂-C₁₆ fragment with the said polyester resin; b) combining the said polyester resin with the modifier based on nano particles of the oxides selected from SiO₂, Al₂O₃, MgO, ZrO₂, CeO₂, TiO₂, ZnO, FeO, Fe₂O₃, Fe₃O₄ and SnO, comprising unsaturated C₂-C₂₀ groups, selected from the C₂-C₂₀ alkene, C₂-C₂₀ alkine or C₂-C₂₀ cycloalkene, covalently bonded by oxygen with the surface of the said nano particles. Disclosed modified polyester resin, comprising a modifier is based on nano particles of the oxides selected from SiO₂, Al₂O₃, MgO, ZrO₂, CeO₂, TiO₂, ZnO, FeO, Fe₂O₃, Fe₃O₄ and SnO, comprising C₂-C₁₆ fragment with at least one hydroxyl group, and covalently bonded by the said hydrocarbon C2-C16 fragment with the said polyester resin; and method for obtaining thereof. Disclosed a polyester resin modifier based on nano particles of the oxides selected from SiO₂, Al₂O₃, MgO, ZrO₂, CeO₂, TiO₂, ZnO, FeO, Fe₂O₃, Fe₃O₄ and SnO, comprising unsaturated C₂-C₂₀ groups, selected from the C₂-C₂₀ alkene, C₂-C₂₀ alkine or C₂-C₂₀ cycloalkene, covalently bonded by oxygen with the surface of the said nano particles; and method of obtaining thereof. Also described a product resulting from curing of the said polyester composition, and described use of the said polyester composition for the production of a composite material.

EFFECT: improved physical and chemical characteristics of the end product.

28 cl, 3 tbl