Stratified material and a method for producing the same

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 4/00 (2006.01) B44C 5/04 (2006.01) C08K 9/04 (2006.01) C09D 4/02 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2346779

The invention relates to a stratified material with a coating which is deposited on one side or both sides and which is comprised of a planar substrate containing acrylate. The synthetic resin is modified by means of high-temperature resistant, polymerizable nanoparticles having a glass transition temperature of the homopolymerizates .ge. 150°C. Said nanoparticles comprise a core consisting of silicon dioxide and of at least one side chain which is covalently bound to the core via one or several oxygen atoms of the oxide, and which is of the formula (MeO)x(Me-(CH2)n-(OCO)m-CR1=CH2)y, wherein Me represents Si or Al, x is 1 to 3, m is 0 and 1, n is 0 to 6, y is 1 to 3 and R1 represents H or CH3, whereby the free valences of Me represent a binding to another oxygen atom of the core or are saturated by alkoxy radicals.

L'invention concerne un matériau stratifié comprenant un substrat plan qui présente un revêtement en acrylate, appliqué sur un ou deux côtés. La résine synthétique est modifiée au moyen de nanoparticules polymérisables, résistant à des températures élevées, présentant une température de transition vitreuse des homopolymères >/= 150 DEG C, lesdites nanoparticules présentant un noyau en dioxyde de silicium et au moins une chaîne liée par covalence au noyau par l'intermédiaire d'un ou plusieurs atomes d'oxygène de l'oxyde, de formule (MeO)x(Me-(CH2)n-(OCO)m-CR<1>=CH2)y, dans laquelle Me représente Si ou Al, x est compris entre 1 et 3, m vaut 0 et 1, n est compris entre 0 et 6, y est compris entre 1 et 3 et R<1> représente H ou CH3, les valences libres de Me représentant une liaison à un autre atome d'oxygène du noyau ou étant saturées par des radicaux alcoxy.

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