Treated waste plastic materials
AssigneeEastman Chemical Company
InventorsBruce Roger DeBruin, Kyle Lyn Collings, Robert Ryan Stanley
Life of this patent
Estimating the term…
Abstract
Isolated quantities of plastic solids having greater than 70% by weight polyethylene terephthalate (PET) also include a) from 0.1% to 10% by weight polyvinyl chloride (PVC), and a moisture content of less than 4% by weight, or b) from 0.05% to 10% or 0.1% to 4% by weight halogens, or c) from 0.1% to 4% by weight polyvinyl chloride (PVC), and at least 0.1% by weight of solid materials that do not phase change below 270° C. and 1 atm. The quantities of these solid plastics are suitable for use as feedstocks to various chemical recycling processes.
Claims13
An isolated quantity of particulate plastic solids comprising greater than 70% by weight polyethylene terephthalate (PET), and
- a) from 0.1% to 10% by weight polyvinyl chloride (PVC), and a moisture content of less than 4% by weight, or
- b) from 0.05% to 10% or 0.1% to 4% by weight halogens, or
- c) from 0.1% to 4% by weight polyvinyl chloride (PVC), and at least 0.1% by weight of solid materials that do not phase change below 270° C. and 1 atm;
- wherein a sampling of the airspace located no more than 3.0 m (10 feet) from the quantity of particulate plastic solids comprises less than 500 ppm of one or more of hydrogen sulfide, dimethyl sulfide, methanethiol, putrescine, cadaverine, trimethylamine, ammonia, acetaldehyde, acetic acid, butanoic acid, propanoic acid, and/or butyric acid.
A quantity of particulate plastic solids comprising at least 50% by weight polyolefins on a dry plastic basis, and:
- a) less than 10% by weight PET on a dry plastic basis, and less than 10,000 ppm of halogens, on a dry plastic basis, or
- b) a moisture content of less than 4% by weight, and at least 0.1% by weight nylons and/or at least 0.001% by weight multicomponent polymers on a dry plastic basis, or
- c) less than 10,000 ppm halogens on a dry plastic basis, and at least 0.1% by weight of solid materials that do not phase change below 270° C. and 1 atm;
- wherein a sampling of the airspace located no more than 3.0 m (10 feet) from the quantity of particulate plastic solids comprises less than 500 ppm of one or more of hydrogen sulfide, dimethyl sulfide, methanethiol, putrescine, cadaverine, trimethylamine, ammonia, acetaldehyde, acetic acid, butanoic acid, propanoic acid, and/or butyric acid.
Dependencies are inferred from the claim text.