Waste Plastics Materials General Plastics has developed a new process for producing polybutylene terephthalate (PBT) and polystyrene-based elastomers from PET (polyethylene terephthalate) waste. The PET waste used is mainly recycled PET plastic bottles. Recycled PET waste can replace dimethyl terephthalate or terephthalic acid, which is commonly used to produce PBT. PBT produced using recycled PET as a raw material can meet the application requirements of the automotive industry.
GM said that if PBT produced in 2006 uses recycled PET as raw material, it can consume 600,000 tons of PET, equivalent to 22.5 billion bottles. This will undoubtedly help broaden the meaning and prospects of green chemicals.
At present, the global output of biodegradable materials is only 300,000 tons per year. As Wal-Mart and others have identified and accepted biodegradable packaging materials, the road to green chemicals will be wider and wider.
Reprinted from: China Building Materials Net
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