US 2023/0416447 A1 · TOUGH, REPROCESSABLE ELASTOMERS AND METHODS OF MAKING AND USING SAME

Abstract

The present disclosure describes, in part, a polymer, for example a thermoplastic polyurethane elastomer, comprising one or more subunits comprising (i) at least one dianhydrohexitole moiety (ii) at least one urethane moiety and (ill) a thiol moiety having two or more sulphur atoms. The thermoplastic polyurethane elastomers may be biodegradable and possess excellent thermoplastic properties, including outstanding toughness, resulting from its semi-crystallinity and low glass transition temperature, that surpasses many leading plastics such as nylon 6 and high-density polyethylene (HOPE) and methods of making same.

Claims21

Dependent claims

A linear polymer comprising at least one subunit, wherein the at least one subunit comprises:

(i) at least one dianhydrohexitole moiety;
(ii) at least one urethane moiety;
and (iii) a thiol moiety having two or more sulphur atoms, wherein the at least one urethane moiety comprises an oxygen atom that is a substituent of the dianhydrohexitole moiety and is formed from a hydroxyl group of the dianhydrohexitole moiety.

A polymer comprising a physical blend selected from the group consisting of:

(a) two or more different homopolymers, wherein each homopolymer comprises at least one subunit comprising (i) at least one dianhydrohexitole moiety, (ii) at least one urethane moiety, and (iii) a thiol moiety having two or more sulphur atoms;
(b) two or more different copolymers, wherein each copolymer comprises at least a first subunit and a second subunit, each subunit comprising (i) at least one dianhydrohexitole moiety, (ii) at least one urethane moiety, and (iii) a thiol moiety having two or more sulphur atoms, wherein in each copolymer the first subunit comprises a first dianhydrohexitole moiety and the second subunit comprises a second dianhydrohexitole moiety, and the second dianhydrohexitole moiety is different to the first dianhydrohexitole moiety;
and
(c) two or more different homopolymers and copolymers, wherein each of said homopolymers comprises at least one subunit comprising (i) at least one dianhydrohexitole moiety, (ii) at least one urethane moiety, and (iii) a thiol moiety having two or more sulphur atoms;
and
wherein each of said copolymers comprises at least a first subunit and a second subunit, wherein each subunit comprises (i) at least one dianhydrohexitole moiety, (ii) at least one urethane moiety, and (iii) a thiol moiety having two or more sulphur atoms, wherein in each copolymer the first subunit comprises a first dianhydrohexitole moiety and the second subunit comprises a second dianhydrohexitole moiety, and the second dianhydrohexitole moiety is different to the first dianhydrohexitole moiety.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/036,721Filed 11 Nov 2021

Priority

13 Nov 2020

Published

28 Dec 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification17 codes

C08G 18/3218
Polyhydroxy compounds: containing cyclic groups having at least one oxygen atom in the ring
C08G 18/246
Tin salts of carboxylic acids: containing also tin-carbon bonds
C08G 18/8032
With compounds of C08G18/3203: masked aliphatic or cycloaliphatic polyisocyanates not provided for in one single of the groups C08G18/8016 and…
C08G 18/8116
Having only one isocyanate or isothiocyanate group: esters of acrylic or alkylacrylic acid having only one isocyanate or isothiocyanate group

Tough, reprocessable elastomers and methods of making and using same

Life of this patent

Tough, reprocessable elastomers and methods of making and using same

Life of this patent

Abstract

Claims21