Wax as a melt flow modifier and processing aid for polymers
AssigneeGreenMantra Recycling Technologies Ltd.
InventorDomenic Di Mondo
Life of this patent
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Abstract
An improved method forms and employs a wax to modify throughputs and melt flow in polymers. The method includes: (a) selecting a solid polymeric material, (b) heating the solid polymeric material in an extruder to produce a molten polymeric material, (c) filtering the molten polymeric material, (d) placing the molten polymeric material through a chemical depolymerization process in a reactor to produce a depolymerized polymeric material, and (e) adding the depolymerized material to a pre-wax mixture to produce a modified polymer.
Claims20
A method for forming a depolymerized wax and employing said depolymerized wax to modify polymeric processing and material properties, the method comprising:
- selecting a solid polymeric post-consumer or post-industrial feed;
- heating said solid polymeric post-consumer or post-industrial feed in an extruder to produce a molten polymeric material;
- filtering said molten polymeric material;
- placing said molten polymeric material through a chemical depolymerization process in a reactor to produce a depolymerized wax material, wherein the depolymerized wax material has a melting point between 106° C. and 135° C.;
- adding said depolymerized wax material into a pre-wax mixture to produce a modified polymer with an increased melt flow index, wherein said pre-wax material comprises a polymer.
A method for forming a depolymerized wax and employing said depolymerized wax to modify polymeric processing and material properties, the method comprising:
- selecting a solid polymeric post-consumer or post-industrial feed;
- heating said solid polymeric post-consumer or post-industrial feed in an extruder to produce a molten polymeric material;
- filtering said molten polymeric material;
- placing said molten polymeric material through a chemical
- depolymerization process hi a reactor to produce a depolymerized wax material, wherein the depolymerized wax material has a melting point between 106° C. and 135° C.;
- adding said depolymerized wax material into a pre-wax mixture to produce a modified polymer with an increased melt flow index, wherein said pre-wax mixture comprises said solid polymeric post-consumer or post-industrial feed which has not been depolymerized.
A method for forming a depolymerized wax and employing said depolymerized wax to modify polymeric processing and material properties, the method comprising:
- selecting a solid polymeric post-consumer or post-industrial feed, wherein said solid polymeric post-consumer or post-industrial feed comprises recycled polyethylene and inorganics;
- heating said solid polymeric post-consumer or post-industrial feed in an extruder to produce a molten polymeric material;
- filtering said molten polymeric material;
- placing said molten polymeric material through a chemical depolymerization process in a reactor to produce a depolymerized wax material, wherein said depolymerized wax material has a melting point between 106° C. and 135° C.;
- adding said depolymerized wax material into a pre-wax mixture wherein said pre-wax mixture comprises said solid polymeric post-consumer or post-industrial feed which has not been depolymerized to produce a modified polymer with an increased melt flow index,
- wherein the amount of said depolymerized wax material mixed into said pre-wax mixture is between 1 to 5 percent of the weight of said modified polymer.
Dependencies are inferred from the claim text.