Methods of producing a polyolefin wax product
AssigneeHoneywell International Inc.; Mail Stop 4D3
InventorsXiangmin Li, Robert C. Mulvaney, III, John Clay
Life of this patent
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Abstract
Methods of producing a polyolefin wax product are provided herein. In an embodiments, a method of producing a polyolefin wax product includes providing a cracked polyolefin vapor phase and a polyolefin liquid phase that are derived from a recycled polyolefin feedstock having a higher number average molecular weight than the polyolefin wax product. A portion of the cracked polyolefin vapor phase is condensed at a temperature and pressure above a boiling point of olefins having less than or equal to 12 carbon atoms to produce the polyolefin wax product.
Claims18
A method of producing a polyolefin wax product, wherein the method comprises:
- providing a cracked polyolefin vapor phase and a polyolefin liquid phase derived from a recycled polyolefin feedstock having a higher number average molecular weight than the polyolefin wax product;
- and
- condensing a portion of the cracked polyolefin vapor phase at a temperature and pressure above a boiling point of olefins having less than or equal to 12 carbon atoms to produce the polyolefin wax product.
A method of producing a polyolefin wax product, wherein the method comprises:
- heating a recycled polyolefin feedstock on an evaporative surface within a short path distillation device at a cracking temperature sufficient to thermally depolymerize polyolefins in the recycled polyolefin feedstock and evaporate the resulting cracked polyolefin to produce a cracked polyolefin vapor phase separate from a polyolefin liquid phase;
- and
- condensing a portion of the cracked polyolefin vapor phase on a condensation surface within the short path distillation device to produce the polyolefin wax product.
A method of producing a polyolefin wax product, wherein the method comprises:
- heating a recycled polyolefin feedstock at a cracking temperature of from about 350 to about 450° C. and a pressure of less than or equal to about 20 KPa to produce a cracked polyolefin vapor phase separate from a polyolefin liquid phase;
- and
- condensing a portion of the cracked polyolefin vapor phase at a temperature of from about 100 to about 180° C. and at a pressure of from about 0.0001 to about 20 Kpa to produce the polyolefin wax product.
Dependencies are inferred from the claim text.