JP2011510106A5 - - Google Patents

Claims (22)

A bioplastic composition comprising a biopolymer comprising 10 to 40% by weight of coated inorganic particles,
The particles in an amount of about 2.3% by weight or more based on the weight of the particles, fatty acids, fatty acid derivatives, rosin, Logistics Na over preparative, polyolefin waxes, oligomers and mineral oils, and combinations thereof A bioplastic composition that is coated with one or more of them. A bioplastic composition comprising 10 to 40 wt% filler,
The filler consists of inorganic particles coated with a dispersant,
The bioplastic composition, wherein the filler is coated with a dispersant containing less than 1% by weight of water at 200 ° C. The bioplastic composition according to claim 1 or 2 , wherein the inorganic particles are made of calcium carbonate. The bioplastic composition according to any one of claims 1 to 3 , wherein the inorganic particles include one of carbonate, silica, kaolin, talc, wollastonite, metal fine particles, glass microspheres, and combinations thereof. object. The bioplastic composition according to any of claims 1 to 4 , wherein the coating level is in the range of about 2.3 to 10.0 wt%. The bioplastic composition according to any one of claims 1 to 5 , wherein the biopolymer is polylactide. The bioplastic composition according to any one of claims 1 to 6 , wherein the filler is precipitated calcium carbonate in the form of needles having an aspect ratio greater than 4. The bioplastic composition according to any one of claims 1 to 7 , wherein the filler is calcium carbonate, and at least 90% of the particles have a size of 20 µm or less. The bioplastic composition according to any one of claims 1 to 8 , which is substantially free of other additives. An article manufactured from the bioplastic according to any one of claims 1 to 9. A method for increasing the toughness of a bioplastic,
Supplying biopolymers in the form of resins;
Into the biopolymer resin, inorganic additive particles coated with a coating material having a coating level of about 2.3% by weight or more are mixed.
The method wherein the coating material is selected from among fatty acids, fatty acid derivatives, rosins, rosinates, polyolefin waxes, oligomers and mineral oils, and combinations thereof. The method according to claim 11 , wherein the inorganic additive particles are calcium carbonate particles. The method according to claim 11 or 12 , wherein the coating material is stearic acid or a derivative thereof. 14. A method according to any one of claims 11 to 13 , wherein the coating level is in the range of about 2.3 to 10.0% by weight. 15. The method according to any one of claims 11 to 14 , wherein the biopolymer is polylactide. 16. A method according to any of claims 11 to 15 , wherein the mixed material is treated at a temperature in the range of 180C to 210C.   Of inorganic particles coated with one or more of fatty acids, fatty acid derivatives, rosins, rosinates, polyolefin waxes, oligomers and mineral oils, and combinations thereof to improve the toughness and ductility of bioplastics use. Use according to claim 17 of the inorganic particles in the range of 10 to 40 wt% of the combinational weight of the coated inorganic particles and the biopolymer as a reference. Wherein the inorganic particles are calcium carbonate, wherein the coating consists of a fatty acid or a derivative thereof to C ₁₀ to C _22, Use according to claim 17 or 18.   Inorganic particles coated with one or more of fatty acids, fatty acid derivatives, rosins, rosinates, polyolefin waxes, oligomers and mineral oils, and combinations thereof to promote crystallization from the molten state of the biopolymer Use of. Use according to claim 20 of the coated inorganic particles and said inorganic particles 10 to 40 wt% of the combinational weight of the biopolymer as a reference. Wherein the inorganic particles are calcium carbonate, wherein the coating consists of a fatty acid or a derivative thereof to C ₁₀ to C _22, Use according to claim 20 or 21.