Process for Extracting Polyester from an Article
AssigneeWorn Again Footwear and Accessories Limited
InventorAdam Walker
Life of this patent
Estimating the term…
Abstract
A process for extracting polyester from an article using a solvent system comprising a compound according to any of general Formula I to VI wherein R1 and R2 are each independently selected from: hydrogen, alkyl, alkenyl, alkynyl, aryl or alkoxy groups; R3 to R12 are each independently selected from: hydrogen, alkyl, alkenyl, alkynyl, aryl or alkoxy groups; X is selected from O or S; and each of a to e is a carbon atom, wherein the total linear chain length of a-b-c-d-e is in the range of 2 to 5 carbons; R13 and R15 are both independently aryl groups; R14, R16, R17, R18 and R19 are each independently selected from hydrogen, alkyl, alkenyl, alkynyl or aryl groups; n is an integer in the range of 1 to 8; m is 3; and 1 is an integer in the range of 1 to 3; or combination thereof.
Claims26
A process for extracting polyester from an article using a solvent system comprising a compound according to any of general Formula I to VI
- wherein R1 and R2 are each independently selected from:
- hydrogen, alkyl, alkenyl, alkynyl, aryl or alkoxy groups;
- R3 to R12 are each independently selected from:
- hydrogen, alkyl, alkenyl, alkynyl, aryl or alkoxy groups;
- X is selected from O or S;
- and
- each of a to e is a carbon atom, wherein
- the total linear chain length of a-b-c-d-e is in the range of 2 to 5 carbons;
- R13 and R15 are both independently aryl groups;
- R14, R16, R17, R18 and R19 are each independently selected from hydrogen, alkyl, alkenyl, alkynyl or aryl groups;
- n is an integer in the range of 1 to 8;
- m is 3;
- and
- 1 is an integer in the range of 1 to 3;
- or combination thereof.
A composition comprising one or more compounds according to any of general formulae I to VI, for extracting polyester from an article,. wherein the general Formula I to VI comprises
- wherein R1 and R2 are each independently selected from:
- hydrogen, alkyl, alkenyl, alkynyl, aryl or alkoxy groups;
- R3 to R12 are each independently selected from:
- hydrogen, alkyl, alkenyl, alkynyl, aryl or alkoxy groups;
- X is selected from O or S;
- and
- each of a to e is a carbon atom, wherein
- the total linear chain length of a-b-c-d-e is in the range of 2 to 5 carbons;
- R13 and R15 are both independently aryl groups;
- R14, R16, R17, R18 and R19 are each independently selected from hydrogen, alkyl, alkenyl, alkynyl or aryl groups;
- n is an integer in the range of 1 to 8;
- m is 3;
- and
- 1 is an integer in the range of 1 to 3;
- or combination thereof.
(canceled)
Dependencies are inferred from the claim text.