METHOD FOR DECOMPOSING THERMOSETTING RESIN AND/OR ITS CURED PRODUCT AND METHOD FOR PRODUCING THERMOSETTING RESIN USING DECOMPOSITION PRODUCT OBTAINED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To produce a thermosetting resin by efficiently decomposing a thermosetting resin and/or its cured product into a low-molecular-weight component such as a constituent monomer thereof or an oligomer, recovering the low-molecular-weight decomposition product obtained by the decomposition and using the decomposition product as a synthetic raw material for the thermosetting resin such as a phenol resin or an epoxy resin and to realize chemical recycle.

SOLUTION: A method for decomposing the thermosetting resin and/or its cured product comprises dissolving the thermosetting resin and/or its cured product in the presence of a zinc halide in phenols under heating/pressurizing and carrying out decomposition thereof. A method for producing the thermosetting resin comprises using the resultant low-molecular-weight decomposition product as the raw material and reproducing the thermosetting resin.

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