C08J11/14

CLOSED-LOOP THERMOPLASTIC COPOLYMERS
20250230281 · 2025-07-17 ·

The disclosed technology provides a thermoplastic copolymer comprising: a plurality of difunctional triketone species; (b) a plurality of a first diamine species, wherein the first diamine species contains one or more primary amine groups and/or one or more secondary amine groups, and wherein the first diamine species does not contain a tertiary amine group; a plurality of a second diamine species, wherein the second diamine species contains one or more primary amine groups and/or one or more secondary amine groups, wherein the second diamine species does not contain a tertiary amine group, and wherein the second diamine species is different than the first diamine species; and optionally, a plurality of monofunctional amine-reactive groups. Some embodiments provide segmented thermoplastic copolymers. Methods of making and using the thermoplastic copolymer are also described, including depolymerizing the thermoplastic copolymer to form recycled monomers. The recycled monomers may then be repolymerized in a closed-loop system.

PREPARATION OF PRESSURE SENSITIVE ADHESIVES FROM POST-CONSUMER SUPERABSORBENT POLYMERS

Methods, including a one-step synthesis method, for chemically modifying crosslinked sodium polyacrylate to form pressure sensitive adhesives are disclosed.

Catalytic microwave depolymerisation of plastic for production of monomer and waxes
11518864 · 2022-12-06 · ·

There is described a microwave pyrolysis process for the depolymerization of plastic for the production of monomers, waxes and heavy oils including the steps of: a) steam purge of the plastic from about 0.5% to about 50% w/w of a catalyst, in a media; b) pyrolysis of the plastic and the catalyst in the media with a microwave (MW) for a time sufficient to allow generation of heat providing a thermal treatment between 300° C. and 650° C. through absorption of microwaves by the catalyst and the media. The catalyst includes a compound having a high dielectric loss at the frequency of the MW to absorb microwaves, transfer heat to the plastic and initiate a pyrolysis reaction.

Process for reclamation of polyester by reactor addition

A method for reclaiming polyester can include: providing a feed of recycled polyester; providing a feed of polyester precursors; depolymerizing the recycled polyester to obtain depolymerized polyester monomers; polymerizing the depolymerized polyester monomers with the polyester precursors to form a reclaimed polyester; and providing the reclaimed polyester as output.

Process for reclamation of polyester by reactor addition

A method for reclaiming polyester can include: providing a feed of recycled polyester; providing a feed of polyester precursors; depolymerizing the recycled polyester to obtain depolymerized polyester monomers; polymerizing the depolymerized polyester monomers with the polyester precursors to form a reclaimed polyester; and providing the reclaimed polyester as output.

PROCESS FOR THE PRODUCTION OF PARTICLE BOARD OR WOOD FIBER BOARD

A process for the production of particle board, MDF board or HDF board includes the step of recycling particle board material, MDF and/or HDF board material in which recycled chips and/or recycled wood fibers are produced. The process includes the step in which the particle board material, the MDF and/or HDF board material is wetted, heated and pressurized, such that this material is kept under pressure and at an elevated temperature for a certain time. The process involves the step of supplying the recycled chips and/or the recycled wood fibers as base material in a production process of particle board, MDF board or HDF board.

PROCESS FOR THE PRODUCTION OF PARTICLE BOARD OR WOOD FIBER BOARD

A process for the production of particle board, MDF board or HDF board includes the step of recycling particle board material, MDF and/or HDF board material in which recycled chips and/or recycled wood fibers are produced. The process includes the step in which the particle board material, the MDF and/or HDF board material is wetted, heated and pressurized, such that this material is kept under pressure and at an elevated temperature for a certain time. The process involves the step of supplying the recycled chips and/or the recycled wood fibers as base material in a production process of particle board, MDF board or HDF board.

Multistage thermolysis method for safe and efficient conversion of carpet/rug, polymeric materials and other waste sources

Clean, safe and efficient methods, systems, and processes for utilizing thermolysis methods to processes to convert various carpet, rug, polymeric materials and other waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like into a Clean Fuel Gas and Char source are disclosed. The invention processes the carpet, rug, polymeric material to effectively shred and/or grind the waste source, such as post-consumer carpet remnants and waste, and then process using thermolysis methods to destroy and/or separate halogen and other dangerous components to provide a Clean Fuel Gas and Char source. Additional waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like, are suitable for the processing of the invention disclosed.

Multistage thermolysis method for safe and efficient conversion of carpet/rug, polymeric materials and other waste sources

Clean, safe and efficient methods, systems, and processes for utilizing thermolysis methods to processes to convert various carpet, rug, polymeric materials and other waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like into a Clean Fuel Gas and Char source are disclosed. The invention processes the carpet, rug, polymeric material to effectively shred and/or grind the waste source, such as post-consumer carpet remnants and waste, and then process using thermolysis methods to destroy and/or separate halogen and other dangerous components to provide a Clean Fuel Gas and Char source. Additional waste sources, such as solid waste, tires, manure, auto shredder residue, glass and carbon fiber composite materials, municipal solid wastes, medical wastes, waste wood and the like, are suitable for the processing of the invention disclosed.

Recovering heavy hydrocarbons from plastic materials and geoformation
11492456 · 2022-11-08 ·

Sometimes, a problem is obvious, everyone sees it, but nothing happens until someone decides to do something useful about it. Methods are herein provided for recovering heavy hydrocarbons from plastic materials and/or geo-formation. In one solution set, PVC waste materials are emulsified by an amine solvent in an aqueous phase, thereby extracting heavier hydrocarbons from the primary structure of PVC into the amine aqueous phase; followed by de-emulsifying the extracted heavier hydrocarbons by separating and recovering the amine solvent, and then separating the de-emulsified heavier hydrocarbons from the aqueous phase by a hydrophobic membrane.