Catalytic Depolymerisation of Polymeric Materials

a polymer and polymer technology, applied in the field of catalytic depolymerization of polymeric materials, can solve the problems of insufficient efficiency of existing conversion processes, high cost of manufacturing these waxes and greases, and high cost of products produced this way

Inactive Publication Date: 2020-01-09
GREENMANTRA RECYCLING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This process achieves selective production of waxes and grease base stocks with yields greater than 90%, reduces energy consumption, and allows for total carbon recovery, producing products with desirable properties such as varying melting points and high viscosity, while being insensitive to impurities and plastic waste composition.

Problems solved by technology

Manufacturing of these waxes and greases are usually expensive.
This may be typically due to requirement of pricey petroleum feed in such manufacturing process.
The products produced this way are relatively more expensive and thus there is a need to utilize readily available polyethylene waste and recycle them to produce the same materials at considerably lower cost.
Existing conversion processes may not be efficient enough and can release green-house gases into the environment.
Further, current techniques may be sensitive to quality and quantity of waste plastic feed and they can have an impact to the end product quality.

Method used

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  • Catalytic Depolymerisation of Polymeric Materials
  • Catalytic Depolymerisation of Polymeric Materials
  • Catalytic Depolymerisation of Polymeric Materials

Examples

Experimental program
Comparison scheme
Effect test

experiment 2

[0054 considers the melting point of wax which is an important property. The melting point of wax is determined by the desired value of pressure inside the high-pressure reactor. TABLE 3 below shows different values of pressure which yields waxes of different melting points.

TABLE 3SI. No.Pressure (psig)Melting point of product wax (° C.)15010028090311080414075520060

[0055]In Experiment 3, the following composition of feed is considered in the high-pressure reactor. It should be noted that the HDPE, LDPE, and LLDPE are available as primary granules.

[0056]1. Primary granules of HDPE, LDPE and LLDPE as pure feed

[0057]2. Waste materials of HDPE, LDPE and LLDPE as pure feed

[0058]3. Various mixtures of primary granules of HDPE, LDPE and LLDPE

[0059]4. Various mixtures of waste materials of HDPE, LDPE and LLDPE

[0060]5. Mixture of (1) and (2)

[0061]6. Waste materials of HDPE, LDPE and LLDPE as pure feeds with 10% of impurities of polystyrene and polypropylene.

[0062]In each of the cases, the de...

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Abstract

A process for converting a molten polymeric material is provided. The process includes effecting disposition of a molten polymeric material, having at least one carbon-carbon double bond, in sufficient proximity to a catalyst material within a reaction zone, to affect a reactive process that effects generation of a reaction product. The reactive process effects cleaving of at least one carbon-carbon double bond. The catalyst material includes [Fe—Cu—Mo—P] / Al2O3 prepared by binding a ferrous-copper complex to an alumina support to generate an intermediate material and reacting the intermediate material with a heteropolyacid.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of and claims priority from U.S. patent application Ser. No. 16 / 000,590 filed on Jun. 5, 2018, entitled “Catalytic Depolymerisation of Polymeric Materials.” The '590 application was a continuation of and claimed priority from U.S. patent application Ser. No. 14 / 761,779 filed on Jul. 17, 2015, entitled “Catalytic Depolymerisation of Polymeric Materials.” The '779 application was a national phase filing of international application No. PCT / CA2013 / 000041, filed on Jan. 17, 2013. The present application also claims priority benefits from the '779 and '041 applications. Each of the '590, '779 and '041 applications are hereby incorporated by reference herein in its entirety.FIELD OF THE INVENTION[0002]The present disclosure relates to catalyzed depolymerization of polymeric materials.[0003]Manufacturers of mechanical equipment, food packagers, and other users of wax and grease for lubricating, sealing, and oth...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): C10M107/02C08J11/10C08F8/50C10G1/10
CPCC08J11/10Y02W30/702C10G1/10C08J2323/06C10M107/02C08F8/50C10M177/00C10M2205/14C10M2207/126C10M175/0025C10M2205/0225C10M2205/0245C10N2020/02C10N2050/10Y02W30/62C08F10/02C08F110/06C08F10/00
InventorKUMAR, ANILKUMAR, PUSHKAR
OwnerGREENMANTRA RECYCLING TECH