| 摘要 |
The discoloration that vinyl chloride resins usually undergo when a slurry containing one of these resins is heated at a temperature above 70 DEG C. to reduce its monomer content to less than 10 ppm is minimized or prevented by carrying out the heating step in the presence of a monomer-miscible color stabilizer that comprises an organic peroxide and/or an organic azo compound.
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