Photocromic primer composition having high impact resistance and transparent material coated with the same
US7713450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2004 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jun 24, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31515
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are a primer composition having photochromic property and impact resistance for coating transparent materials and a photochromic transparent material having a primer layer formed by coating and curing the primer composition. The primer composition for coating transparent materials comprises: a) 5-90 parts by weight of a polyurethane containing Brønsted salt; b) 5-50 parts by weight of a polyepoxy resin; and c) 140 parts by weight of a photochromic dye, based on 100 parts by weight of the total primer composition. The photochromic transparent material having a primer layer formed by coating and curing the primer composition shows excellent photochromic property and impact resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.