Interlayer for laminated glass, and laminated glass
US9435913B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 19, 2011 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Jan 10, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/223
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An interlayer film for laminated glass that suppresses the transmittance of ultraviolet rays with a wave length of 400 nm to 1% or less, and has high light resistance. The interlayer film for laminated glass comprises a thermoplastic resin, an ultraviolet absorber having a structure of formula (1), and an ultraviolet absorber having a structure of formula (2), wherein the amount of the ultraviolet absorber of formula (1) is 0.001 to 0.05% by weight, and the amount of the ultraviolet absorber of formula (2) is 0.5 to 1.0% by weight;wherein R1 is a C1-3 alkyl group; R2 is hydrogen, a C1-10 alkyl group, or a C7-10 aralkyl group; R3 is hydrogen or a C1-8 alkyl group; and R4 is hydrogen or a C1-8 alkyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.