摘要:
Compositions having solid core particles with functionalizing layers over at least a portion of the outer surfaces of the solid core particles are described. The functionalizing layers are formed from a reaction product of a 1,1-di-activated vinyl compound, or a multifunctional form thereof, or a combination thereof.
摘要:
A treated, particulate inorganic pigment is provided. The treated, particulate inorganic pigment comprises a plurality of pigment particles, and a polyol ester deposited on the surfaces of the pigment particles. A method of forming a treated, particulate inorganic pigment and a polymer composition are also provided.
摘要:
The invention concerns a continuous flow process for manufacturing surface modified metal oxide nanoparticles by supercritical solvothermal synthesis in an reaction medium flowing within a continuous flow chamber, said continuous flow chamber containing a hydrolysis area and a supercritical area, said process comprising the introduction of a flow of metal oxide precursor into the continuous flow chamber at a point P located in the hydrolysis area or in the supercritical area, and the introduction of a flow of surface modifier into the continuous flow chamber at a point P2 located in the hydrolysis area or in the supercritical area, wherein P2 is located downstream of P1 with respect to the flow direction, as well as the device for carrying out this process.
摘要:
The present invention relates to coated titanium dioxide particles, wherein at least one coating layer comprises an ester made from a mixture of fatty alcohol and C6 to C12 aliphatic acids as coating material.
摘要:
A cost-effective process for loading particulate pigment into a polymer concentrate includes adding a basic pH aqueous solution having a water soluble organic salt to a milled particulate pigment to form an organic-coated particulate pigment. The pH of the basic aqueous solution is sufficiently basic that the water soluble organic salt remains in a salt form. Without a prior micronization step, the organic-coated particulate pigment is mixed with a polymer resin to form a polymer concentrate having from about 50% to about 87% by weight particulate pigment with dispersibility comparable to micronized organic-coated particulate pigment.
摘要:
L'invention concerne un nanomatériau comprenant des nanoparticules d'un oxyde fonctionnalisées avec un composé organique résistant à la lumière, enrobées dans une matrice polymère, un procédé de fabrication de ce nanomatériau et les utilisations de ce nanomatériau. Le nanomatériau selon l'invention comprend : a) des nanoparticules d'un oxyde dont la surface externe est modifiée avec des groupements comprenant un groupe à forte densité en électrons π , et b) au moins un composé organique comprenant des groupes ayant une forte densité en électrons π , lesdites nanoparticules à surface modifiée et lesdits composés organiques résistants à la lumière formant des nanoparticules fonctionnalisées qui sont enrobées dans une matrice polymère. L'invention trouve application dans le domaine de la protection de composés contre les effets néfastes de la lumière, en particulier.
摘要:
L'invention a pour objet un procédé de modification de surface d'un pigment organique ou inorganique mettant en œuvre une huile végétale naturelle ainsi que les compositions de pigments obtenus par un tel procédé, notamment sous forme de poudre. L'invention comprend également l'utilisation de ces pigments ou compositions de pigments pour la cosmétique, la peinture ou encore les encres.
摘要:
The disclosure provides a self-dispersing pigment having an isoelectric point of at least about 8 comprising an inorganic particle having a silica treatment and an outermost treatment prepared by sequentially: (a) hydrolyzing an aluminum compound or basic aluminate to deposit a hydrous alumina surface; and (b) adding a dual-functional compound comprising an anchoring group that attaches the dual-functional compound to the pigment surface, and a basic amine group comprising a primary, secondary or tertiary amine. These self-dispersing pigments are useful in making décor paper that may be used in paper laminates.
摘要:
Hydrophilic coating compositions and methods to make and use the compositions are disclosed. The compositions include a photocatalytic pigment material made up of an inorganic pigment and a monomeric anti-oxidants and free radical scavenger that is contacted to the surface of the inorganic pigment.
摘要:
The present invention relates to a process for manufacturing low-dusting, smoothly-discharging, easily dispersible, powders such as pigmentary titanium dioxide that resist compaction, aging, lumping, and/or caking. Particularly, the present invention relates to a process for treating powders such as pigmentary titanium dioxide with ammonia or a similarly basic substance prior to or during agglomeration to produce a powder with improved bulk handling properties.