Composite particles, composition and foam compositions containing composite particles, articles, and methods of making and using same
US11186697B2 · kind B2 · utility
2Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Feb 9, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2477/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Composite particles are provided including a chemical blowing agent particle encapsulated within a shell including an uncrosslinked thermoplastic material. The uncrosslinked thermoplastic material exhibits at least a certain minimum complex viscosity at a decomposition temperature of the chemical blowing agent particle. Also described are compositions and foam compositions containing the composite particles. Further, articles are provided including the foam compositions, such as a sheet, tape, or hearing protection article. Methods of making and using the foam compositions are additionally described herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.