摘要:
This invention relates to a method of making a bio-based polyethylene terephthalate (PET) container comprising: (a) forming monoethylene glycol (MEG) from at least one bio-based material; (b) melt polymerizing the MEG with terephthalic acid (TA) to form a bio-based PET; (c) solid state polymerizing the bio-based PET to form a PET resin; and (d) processing the PET resin into a PET container.
摘要:
A decomposition reaction apparatus for the decomposition treatment of a thermosetting resin, which comprises a reaction apparatus comprising an introduction section for introducing a resin composition containing the thermosetting resin and a solvent containing a monomer component of the thermosetting resin or a component similar to the monomer component, a decomposition reaction section for heating and pressuring the resin composition and the above solvent so as for the solvent to have a supercritical state or a subcritical state, to thereby prepare a treated and recovered product containing a recycled resin formed by the reduction of the molecular weight of the above thermosetting resin, and a discharge section for discharging the treated and recovered product. In the above reaction apparatus, the introduction of the resin composition and the solvent, the decomposition treatment of the thermosetting resin in the decomposition reaction section and the discharge of the treated and recovered product from the discharge section are all carried out continuously, and therefore, a raw material for a recycled resin composition using an industrial or general waste containing a thermosetting resin as the above resin composition can be produced continuously.
摘要:
A microorganism belonging to the genus Rhizobium and being capable of degrading an aromatic polyester and a method of degrading an aromatic polyester using this microorganism. According to this method, an aromatic polyester can be safely, less expensively and relatively quickly degraded.
摘要:
A microorganism which belongs to the genus Rhizobium and has the ability of degrading an aromatic polyester, and a method of degrading an aromatic polyester by using the microorganism. According to this method, the aromatic polyester can be degraded safely and relatively swiftly at a low cost.
摘要:
A method of decomposing an unsaturated carboxylic acid copolymer which comprises bonding to a molecular chain thereof a functional group having the property of generating a free radical and then bringing a white-rot fungus or an enzyme excreted from a white-rot fungus into contact with the unsaturated carboxylic acid copolymer. The method enables an unsaturated carboxylic acid copolymer to be decomposed without adversely influencing the natural environment.
摘要:
The present invention provides a method of recovering a polyamine compound and/or a polyol compound useful for starting materials of polyurethane resin in an industrially advantageous manner by first dissolving the polyurethane resin such as polyurethane foams discharged in a large amount as industrial wastes in a solubilizing agent containing a polyamine compound, a low molecular glycol or an amino alcohol, hydrolyzing the resulting solution with liquid water at 200 to 320 °C , then recovering the polyamino compound and/or polyol compound thus formed.
摘要:
There is disclosed a method of decomposition treating a waste article comprising cured thermosetting resin comprising the steps of: (a) bringing the waste article comprising cured thermosetting resin into contact with a decomposing fluid containing a solvent, capable of decomposing the resin, in a decomposition bath and (b) heating the fluid at a temperature not lower than 250°C and lower than the critical temperature of the solvent. Thereby, a waste article containing cured thermosetting resin is easily decomposed and waste resins and other components therein are recycled and reused as resources.