Sound insulation composition and sound insulation sheet for vehicle
US10967811B2 · kind B2 · utility
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17Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 21, 2016 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Mar 8, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A sound insulation composition and a sound insulation sheet for a vehicle are provided. The sound insulation composition includes 50 to 300 parts by weight of EVA, 10 to 300 parts by weight of mica powders, 10 to 300 parts by weight of dolomite, 10 to 50 parts by weight of thermoplastic resin, 10 to 100 parts by weight of a toughening agent, 3 to 60 parts by weight of a compatibilizer, 30 to 300 parts by weight of a fire retardant, 10 to 80 parts by weight of a plasticizer, and 100 to 500 parts by weight of barium sulfate. The sound insulation sheet for the vehicle is made of the sound insulation composition mentioned above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.