Silico-acrylic compositions, method of preparation and application to the obtaining of coatings resistant to abrasion and scratching
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United States of America Patent
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Jan 1, 2002
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N/A
app pub date -
Nov 2, 1999
filing date -
Dec 7, 1998
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Expired
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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) H.sub.2 C.dbd.CH--Si(OR).sub.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.
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