Abrasion-resistant coating composition process for making such coating composition and article coated therewith
US6218494A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1998 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Nov 18, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The coating composition according to the invention comprises: PA1 (A) a component which is the reaction product with oxalic acid of at least one organometallic compound of formula: EQU R.sup.1.sub.y --M(OR).sub.x-y (I) wherein, M is a metal R is H or an alkyl radical, R.sup.1 is a chelating ligand, x is the valency of the metal, y is an integer at least equal to 1 and x-y is at least equal to 1; and PA1 (B) at least one organoalkoxysilane of formula: EQU R.sup.3.sub.n Si(OR.sup.2).sub.4-n (II) wherein, R.sup.2 is an alkyl radical, R.sup.3 is an epoxidized alkyl group and n is an integer from 1 to 3 or a mixture of the organoalkoxysilane of formula (II) with an alkoxysilane of formula (II') EQU R'.sub.n 'Si(OR").sub.4-n' (II') wherein PA1 n' is an integer from 0 to 3, PA1 R" is H, an alkyl radical or an alkoxyalkyl radical, and PA1 R' is a vinyl, (meth)acryl, aromatic, cyclic or aliphatic alkyl radical. Application for making abrasion-resistant coating on plastic ophtalmic lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.