Multi-material disassembly
US12378449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2021 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Jan 1, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composite material comprising at least two substrates onto which a layer of an intumescent composition is set therebetween, the composition comprising a mixture of following individual constituents: from 5 weight % to 70 wt % of at least one carbon source, from 0 weight % to 50 wt % of at least one acid source, and from 5 weight % to 50 wt % of least one expanding agent, the total being 100 wt %, wherein the intumescent composition is active at an intumescent predetermined temperature of from 120° C. to 450° C., the intumescent temperature being less than the degradation temperature of the at least two substrates. Also a use of the intumescent composition for disassembling, at an intumescent predetermined temperature of from 120° C. to 450° C., a composite material comprising at least two substrates onto which a layer of the intumescent composition is set therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.