Pigment-free coating compositions
US4027073A · kind A · utility
241Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1976 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | Jun 21, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An acidic dispersion of colloidal silica and hydroxylated silsesquioxane in an alcohol-water medium is coated onto solid substrates, such as acrylic lenses, to provide an abrasion resistant coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.