摘要:
The invention relates to a method for producing a hybrid particle, containing polymers and SiO 2 particles, wherein a) in a first polymerization stage in an aqueous medium a water-insoluble phase, containing one or more monomers and colloidal SiO 2 particles having a mean particle size of 1 to 150 nm, is polymerized, and b) in a second polymerization stage in an aqueous medium one or more monomers are polymerized in the presence of the polymer obtained in the first polymerization stage.
摘要:
The object of the invention is nanoparticulate silicone organo copolymers in the form of aqueous polymer dispersions thereof or polymer powders that can be redispersed in water, whereupon the polymer dispersion obtained can optionally dried, said copolymers being obtainable through the radically-initiated polymerization, in an aqueous medium, of A) one or more monomers selected from the group consisting of vinyl esters, (meth)acrylic acid esters, vinyl aromatics, olefins, 1,3- dienes, vinyl ethers and vinyl halogenides and optionally other monomers copolymerizable therewith in the presence of B) at least one particle P having an average diameter of
摘要:
A coating composition is prepared by polymerizing an addition polymer with a Tg of at least about 60° C. in the presence of a particulate pigment having substantially primary aggregate particles to form encapsulated pigment particles, isolating and drying the encapsulated pigment product, and combining the dried encapsulated pigment product with a coating vehicle.
摘要:
A curable resin composition comprising (A) reactive particles prepared by bonding (A1) at least one of oxide particles of an element selected from the group consisting of silicon, aluminum, zirconium, titanium, zinc, germanium, indium, tin, antimony, ruthenium, rhenium, silver, nickel, cupper and cerium, and (A2) an organic compound which comprises a polymerizable unsaturated group, (B) a compound having two or more polymerizable unsaturated groups in the molecule, and optionally (C) a terminal reactive polysiloxane compound having at least one polymerizable group, other than organic compound (A2).
摘要:
The invention relates to antimicrobial polymers, obtained by the copolymerisation of aliphatically unsaturated monomers which are at least simply functionalised by a secondary amino group (component I), with an additional aliphatically unsaturated monomer which is at least simply functionalised by a secondary amino group (component II), whereby component I and component II are different from one another. Additional aliphatically unsaturated monomers can be used as component III for copolymerisation. The antimicrobial polymers can be used as a microbicidal coating, among others, on hygiene articles or in the medical field and can also be used in lacquers or protective paint coatings.
摘要:
The invention relates to high-temperature resistant polymerizable metal oxide particles with a glass transition temperature of the homopolymerizate ≥100 °C and having a core A. Said core consists of an oxide of a metal or semimetal of the third to sixth main group, of the first to eighth subgroup of the periodic table, or of the lanthanides, and comprises at least one group -(B)w-X bound via the oxygen atom of the oxide or hydroxide, wherein B represents a binding link, and X represents a reactive functional group, and w is equal to 0 or 1. The inventive particles are useful, in particular, for producing coating materials, molding materials and adhesives.
摘要:
A photopolymerizable olefinic composition containing a mineral filler suitable for forming on a substrate an abrasion resistant protective film. The mineral filler essentially consists of silica or alumina particles having been made organophilic and compatible with olefinic monomers by grafting organic groups on the surface thereof. When the filler is silica thus modified and when the refraction indexes of the organic phase and of the particles are near to each other, the anti-abrasive film is transparent.