Intermediate film for laminated glass, and laminated glass
US11491768B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2019 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Jan 30, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2605/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided is an interlayer film for laminated glass capable of enhancing the sound insulating property over a wide range of temperature from 0° C. to 40° C. An interlayer film for laminated glass according to the present invention is an interlayer film for laminated glass having a one-layer structure or a two or more-layer structure, the interlayer film includes a resin layer, and a ratio of a first storage modulus G′ at a peak temperature of a maximum peak of tan δ to a second storage modulus G′ at a temperature 100° C. higher than the peak temperature of the maximum peak of tan δ is 50 or more and 500 or less in viscoelasticity measurement at a frequency of 1 Hz in a shearing mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.