Silico-acrylic compositions, method of preparation and application to the obtaining of coatings resistant to abrasion and scratching
US6335380B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1999 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Nov 2, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D4/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Fluid silico-acrylic compositions, which can be polymerised by heat and radiation, by radical-type mechanism, with very low water (less than 1%) and volatile solvent content, containing silica, a silane and a multifunctional acrylic monomer, in which the silica is in the form of individualised particles, with a mean diameter of between 40 and 100 nm, not linked to each other by siloxane bonds, and the silane is a vinylsilane of formula (I)H2C═CH—Si(OR)3  (I)in which R represents a methyl or ethyl radical and the multifunctional acrylic monomer is 1,6-hexanediol diacrylate, and which are transparent, colourless and stable over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.