Abstract:
To provide a method for producing olefins having the carbon atom number of 2 to 3 with a high yield. A method for producing olefins including following steps (1) and (2): step (1): heating a polyolefin plastic to obtain a decomposed product (pyrolysis step); and step (2): causing the decomposed product obtained at the step (1) to contact with an MFI zeolite containing sodium atoms in the range of 0.10% by mass to 0.30% by mass to obtain catalytically cracked products containing olefins (catalytic cracking step).
Abstract:
To enable highly efficient production of an olefin with a low environmental impact. The production includes a cracking step of thermally cracking the plastic to obtain a cracked gas, wherein a temperature T4 of the cracked gas at a gas outlet of a cracking device in which the cracking step is carried out is not lower than a dew point of the cracked gas.
Abstract:
The present invention provides an aromatic polyester which is substantially free from the occurrence of coloration and retains significantly high transparency even after being thermally processed at high temperature and which has high flowability. The aromatic polyester contains a polyhydric phenol residue and a residue of any one of aromatic polycarboxylic acid, halide thereof, and anhydride thereof, and terminals of the aromatic polyester have a structure represented by the formula -C(O)-R. The aromatic polyester has an end-capping rate of 90% or higher and a weight average molecular weight (Mw) ranging from 3,000 to 1,000,000.
Abstract:
This invention provides a method for producing a dielectric substance having excellent dielectric properties and being biodegradable, such method comprising subjecting silk protein to molding.
Abstract:
To enable highly efficient production of an olefin with a low environmental impact. The production includes a cracking step of thermally cracking the plastic to obtain a cracked gas, wherein a temperature T4 of the cracked gas at a gas outlet of a cracking device in which the cracking step is carried out is not lower than a dew point of the cracked gas.
Abstract:
To enable highly efficient production of an olefin with a low environmental impact. The production includes a thermal cracking step of thermal cracking plastic to obtain a thermally cracked gas (G1) and a catalytic cracking step of cracking the thermally cracked gas (G1) in the presence of a catalyst to obtain a catalytically cracked gas (G2). When a ratio of an olefin to paraffin in the thermally cracked gas (G1) is indicated as R1 and a ratio of an olefin to paraffin in the catalytically cracked gas (G2) is indicated as R2, the following formula is satisfied: R2/R1 > 1.