Hybrid polymer for visco-elastic plastic spacer
US11413851B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Jul 23, 2018 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Jul 23, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2605/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A viscoelastic plastic interlayer intended to be arranged between two glass sheets of a glazing in order to provide it with vibroacoustic damping properties, includes two outer layers of thermoplastic adhesive, an inner layer arranged between the two outer layers, the inner layer having a loss factor tan δ greater than or equal to 1.6 at 20° C. and for a frequency range of between 2 kHz and 8 kHz, and first and second barrier layers arranged respectively between the outer layers and the inner layer 3, and composed of a viscoelastic plastic material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.