Elastic materials
US8188293B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 14, 2006 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Oct 2, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G83/008
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to materials exhibiting the property of rubbery elasticity, consisting of molecules with a mass of between 9 and 9000 g/mol, all or some of the molecules having at least three groups (also referred to as “associative groups”) capable of associating via non-covalent interactions.Although consisting of small non-polymerized molecules that are not chemically crosslinked, this material exhibits properties of rubbery elasticity. According to an embodiment of the invention, this material exhibits rubbery elasticity at ambient temperature. Above a certain temperature, the material flows like a simple liquid. The material is thermoreversible, i.e. after cooling, the material again exhibits the property of rubbery elasticity. This material is self-repairing and potentially recyclable, which is never the case with a chemically crosslinked elastomer.According to an embodiment of the invention, the molecules constituting the material of the invention bear associative groups of formula (1) below:in which A denotes oxygen, sulphur or NH; the carbon atoms of formula (1) can be substituted. Preferably, A denotes oxygen. Advantageously, the material comprises (i) molec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.