High temperature resistant sound absorbing materials for vehicle
US8997925B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 11, 2013 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Apr 11, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K7/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a highly heat resistant sound absorbing material for a vehicle capable of maintaining a shape even at high temperatures of about 200° C. or above and which satisfies UL 94V-0 flame retardancy. More particularly, the a highly heat resistant sound absorbing material includes a fiber material having a limiting oxygen index (LOI) of at least about 25% and capable of maintaining a shape at a temperature of about 200° C. or above, and a thermosetting binder resin capable of maintaining a shape at a temperature of about 200° C., wherein the fiber material and thermosetting binder resin are provided at a specific proportion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.