Filler for degradable plastics and process for producing the same
AssigneeNittetsu Mining Co., Ltd.
InventorsKatsuyuki Tanabe, Masaharu Umebayashi, Atsushi Ugomori, Seiji Asaba
Life of this patent
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Abstract
In order to provide a filler for degradable plastics which can simplify the stages for producing a degradable plastic, give effective plastic-degradability, and stabilize the quality of the plastic article, the filler is used as a carrier substance and effective biodegradable and/or photodegradable components are adsorbed on the surfaces of the filler particles via a surface treating agent.
Claims16
A filler for degradable plastics comprising a filler used for plastics as a carrier substance, and biodegradable-and/or photodegradable-effective component(s) having been adsorbed on the surfaces of said filler particles via a surface treating agent.
A process for producing a filler for degradable plastics which comprises adding biodegradable-and/or photodegradable-effective component(s) to a filler before or during the surface treatment of the filler with a surface treating agent thereby adsorbing the component(s) on the surfaces of filler particles.
A process for producing a filler for degradable plastics characterized in that the biodegradable-and/or photodegradable-effective components are mixed with and dispersed in a surface treating agent, thereby surface-treating the filler with said surface treating agent and said biodegradable- and/or photodegradable-effective components.
A process for producing a filler for degradable plastics characterized in that biodegradable-and/or photodegradable-effective component(s) are added to a filler and adsorbed on the surfaces of the filler particles after the filler is surface-treated.
A process for producing a filler for degradable plastics characterized in that an biodegradable-effective component is mixed with and dispersed in a filler, followed by surface-treating.
A process for producing a filler for degradable plastics characterized in that an biodegradable-effective component is mixed with and dispersed in a filler, followed by adding a surface treating agent and an photodegradable-effective component.
A plasticizer for degradable plastics with biodegradable- and/or photodegradable-effective components mixed and dispersed therein.
A process for producing a plasticizer for degradable plastics comprising mixing with and dispersing in a plasticizer a biodegradable- and/or photodegradable-effective component.
Dependencies are inferred from the claim text.