Patent classifications
C07C29/1285
Reactive chromatography process for equilibrium-limited reactions
The present disclosure provides for a process for an equilibrium limited reaction using reactive chromatography unit (RCU) in which a first organic donor reactant (FODR) and a second organic acceptor reactant (SOAR) react to form a product mixture of a first acceptor product (FAP) and a second donor co-product (SDCP). The equilibrium-limited reaction does not produce water. The RCU has separation media to separate the product mixture into a raffinate and an extract. The FODR is in a stoichiometric deficit relative to the SOAR for the equilibrium limited reaction, so that the SOAR acts as the eluent for both the raffinate and the extract, and so as not to produce an azeotrope of FODR and the SDCP in the extract.
Zinc complex
A zinc complex characterized in exhibiting an octahedral structure and being configured from repeating units represented by general formula (I): ##STR00001##
wherein L represents a linker region, and R.sup.1 represents a C1-4 alkyl group, which can have a halogen atom.
Zinc complex
A zinc complex characterized in exhibiting an octahedral structure and being configured from repeating units represented by general formula (I): ##STR00001##
wherein L represents a linker region, and R.sup.1 represents a C1-4 alkyl group, which can have a halogen atom.
Polyethylene terephthalate depolymerization
The present invention relates to the depolymerization of polymers and the recovery of the starting materials used for the production of the polymer. The present invention also relates to the depolymerization of polyethylene terephthalate (PET) and the recovery of terephthalic acid and ethylene glycol.
POLYETHYLENE TEREPHTHALATE DEPOLYMERIZATION
The present invention relates to the depolymerization of polymers and the recovery of the starting materials used for the production of the polymer. The present invention also relates to the depolymerization of polyethylene terephthalate (PET) and the recovery of terephthalic acid and ethylene glycol.
Process for recovering and reusing depolymerization catalyst
The present disclosure relates to the recovery of an alkoxide catalyst used in a process depolymerizing a polyester to form a diacid or diester and a diol. The present disclosure also relates to the recovery of an alkoxide catalyst used in a process depolymerizing polyethylene terephthalate to form dimethyl terephthalate and mono ethylene glycol.
Process for recovering and reusing depolymerization catalyst
The present disclosure relates to the recovery of an alkoxide catalyst used in a process depolymerizing a polyester to form a diacid or diester and a diol. The present disclosure also relates to the recovery of an alkoxide catalyst used in a process depolymerizing polyethylene terephthalate to form dimethyl terephthalate and mono ethylene glycol.
Process for the depolymerization of polyethylene terephthalate (PET)
The present disclosure relates to the formation of dimethyl terephthalate (DMT) and mono ethylene glycol (MEG). The present invention also relates to the depolymerization of polyethylene terephthalate (PET) and the recovery of dimethyl terephthalate (DMT) and mono ethylene glycol (MEG) using sodium methoxide as a catalyst.
Process for the depolymerization of polyethylene terephthalate (PET)
The present disclosure relates to the formation of dimethyl terephthalate (DMT) and mono ethylene glycol (MEG). The present invention also relates to the depolymerization of polyethylene terephthalate (PET) and the recovery of dimethyl terephthalate (DMT) and mono ethylene glycol (MEG) using sodium methoxide as a catalyst.
PREPARATION METHOD OF MONOMER COMPOSITION FOR SYNTHESISING RECYCLED PLASTIC, PREPARATION DEVICE OF MONOMER COMPOSITION FOR SYNTHESISING RECYCLED PLASTIC, AND MONOMER COMPOSITION FOR SYNTHESISING RECYCLED PLASTIC, RECYCLED PLASTIC, MOLDED PRODUCT USING THE SAME
The present disclosure relates to a preparation method of a monomer composition for synthesizing recycled plastic, the method comprising the steps of: subjecting a polycarbonate-based resin to a depolymerization reaction in the presence of an alcohol; monitoring a Raman spectrum of an aromatic diol compound obtained from the depolymerization reaction or alcohol in a reactor through which depolymerization reaction proceeds; and recovering the aromatic diol compound, and to a preparation device of a monomer composition for synthesizing recycled plastic, and a monomer composition for synthesizing recycled plastic, a recycled plastic and a molded product using the same.