Enhanced abrasion resistance radiation curable coating for substrates
US5916669A · kind A · utility
16Cited by
13References
26Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 7, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Jan 7, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An abrasion resistant, radiation or heat curable dual composition is applied to a polymer substrate, such as an opthamlic lens. An abrasion enhancement layer is deposited on a surface of the substrate. The abrasion enhancement layer has a modulus of M.sub.1 and a Shore A value of 50 or less. A top coating is deposited on the abrasion enhancement layer. It has a modulus of M.sub.2 that is greater than M.sub.1. The top coating has an abrasion resistance Bayer Haze Gain ratio of 1.0 or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.