Silicoacrylic compositions, preparation process and use for obtaining coatings which are hardenable thermally or by radiation
US6136912A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1998 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Dec 7, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F230/085
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Silicoacrylic compositions which are fluid, polymerizable thermally or by radiation, by a radicular mechanism, with a very low water (less than 1.5%) and volatile solvent content containing silica, a silane and a multifunctional acrylic monomer, in which the silica is in the form of individualized particles, with an average diameter comprised between 5 and 100 nm, not linked together with siloxane bonds, the silane is a vinylsilane of formula (1) EQU H.sub.2 C.dbd.CH--Si(OR).sub.3 (I) in which R represents a methyl or ethyl radical, in which the multifunctional acrylic monomer is tripropylene glycol diacrylate designated TPGDA, the quantity of vinylsilane of formula I is comprised between 0.01 millimole and 0.1 millimole per m.sup.2 of silica used and which are transparent and colourless as water and stable over time and preparation process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.