Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2006-04-25
2011-10-04
Jagannathan, Vasu (Department: 1764)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S357000, C427S212000, C427S219000, C523S216000, C516S104000, C516S111000
Reexamination Certificate
active
08029899
ABSTRACT:
The invention relates to coated particles comprising particles and a crosslinked polysiloxane coating and to a process for the manufacture of said coated particles. Further, the invention relates to the use of the coated particles to improve surface properties of articles and to material compositions comprising the coated particles, in particular coating compositions. According to the invention there is provided coated particles comprising particles having a surface with hydroxy functional groups and a crosslinked polysiloxane coating comprising a reaction product of polysiloxane disilanol according to formula I:wherein n is 1 to 25, and wherein each R is a same or different hydrocarbon group, and a coating crosslinking agent, preferably an alkoxysiloxane having 3 or 4 alkoxy groups which polysiloxane coating is at least partly grafted to the particle surface by reaction with the hydroxy functional groups on the particles. The coated particles can be used to impart improved surface properties in particular in coatings.
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Schutyser Jan Andre Jozef
Vijverberg Cornelis Adrianus Maria
Haitjema Coraline J.
Hoyng Monegier LLP
Jagannathan Vasu
Nuplex Resins B.V.
Owen David P.
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