Material systems and methods of manufacture for auxetic foams
US11498248B2 · kind B2 · utility
0Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2019 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Oct 11, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2481/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A novel material for producing auxetic foams is disclosed. The material comprises a multiphase, multicomponent polymer foam with a filler polymer having a carefully selected glass transition temperature. Novel methods for producing auxetic foams from the material are also disclosed that consistently, reliably and quickly produce auxetic polyurethane foam at about room temperature (25° C.). This technology overcomes challenging issues in the large-scale production of auxetic PU foams, such as unfavorable heat-transmission problem and harmful organic solvents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.