Abstract:
The present invention is directed to, in part, polymer clay nanocomposites having an acid containing monomer and clay. In one embodiment, there is provided a process for preparing an aqueous polymer clay nanocomposite dispersion, wherein the process comprises: providing an aqueous dispersion comprising at least one clay, optionally at least one ethylenically unsaturated monomer, and optionally at least one surfactant; providing a monomer mixture comprising at least 10 % by weight of an acid containing monomer within the monomer mixture and optionally a surfactant; mixing the aqueous dispersion and the monomer mixture; and polymerising the monomer to form the nanocomposite dispersion wherein the clay is at least partially exfoliated within the nanocomposite dispersion. The present invention also relates to the use of these compositions such as thickeners, dispersants, plastics additives, adhesives, coatings, flexographic inks, overprint varnishes, and dry cement powder modifiers.
Abstract:
The invention aims at providing a catalyst for polymerizing one or more polar unsaturated compounds into a (co)polymer which catalyst enables extremely efficient production of such (co)polymers closely controlled in number-average molecular weight with a closely controlled number of formed molecules, and (co)polymers obtained by using the catalyst. More specifically, the invention relates to a polymerization catalyst composition containing a composition comprising an organic-oxy salt compound (i.e., a salt of an organic oxy anion) and a hydroxy-carbonyl compound bearing in the molecule both an alcoholic hydroxyl group and a carbonyl group; polymerization of polar unsaturated compounds with the catalyst; and compositions containing the (co)polymers obtained by this polymerization, which are useful particularly as thermosetting powder coating materials excellent in performances.
Abstract:
Described is an aqueous coating composition comprising an aqueous dispersion of a radically polymerized addition polymer and phyllosilicate. The aqueous polymer dispersion has a particularly low electrical conductivity. The composition can be used for providing oxygen barrier properties to polymer films.
Abstract:
The present invention relates to a pre-treatment liquid providing improved spreading property when printing an ink-jet image, as well as an an ink-jet printing method comprising applying the pre-treatment liquid of the invention on a recording medium prior to printing an ink-jet image and a method of pre-treating a recording medium, comprising pre-treating a recording medium with the pre-treatment liquid of the invention. With the present pre-treatment liquid a combination an improved spreading of the ink on the pre-treated recording medium can be achieved.
Abstract:
Die vorliegende Erfindung betrifft ein Beschichtungsmittel, umfassend mindestens ein Styrol-Acrylonitril-Copolymer in einem Gehalt von mindestens 30 Gew.-% des Festanteils des Beschichtungsmittels; mindestens 30 Gew.-% eines UV-härtbaren Reaktiwer dünners; 0,1 bis 10 Gewichtsteile mindestens eines Fotoinitiators; und mindestens ein organischen Lösungsmittel, wobei der Anteil an ethylenisch ungesättigten Gruppen mindestens 3 mol pro kg des Festanteils des Beschichtungsmittels beträgt. Die damit beschichteten Folien, insbesondere Polycarbonatfolien, weisen verbesserte Eigenschaften hinsichtlich Kratzfestigkeit, Lösemittelbeständigkeit und eines verringerten Oiling-Effektes auf, was sie besonders für den Einsatz zur Herstellung von Kunststoffteilen in film insert molding- Verfahren geeignet macht.
Abstract:
Described herein is a coating formulation for non-platable grade substrate prior to undergoing an electroless metal plating process. Said coating formulation comprises of a mixture of multifunctional based monomer and diphenylmetane- 4, 4-diisocyanate (MDI), said multifunctional based monomer has allyl group or alkyl group or vinyl group or ether group or ester group or methacrylate group or acrylate group or phthalate group or combination thereof but does not include multifunctional monomer having hydroxyl group. According to the present invention, the ratio of said multifunctional based monomer is less than or equal (
Abstract:
Processes for utilizing various emulsion polymerization procedures for preparing aqueous nanocomposite dispersions are disclosed. The disclosed processes include both in-situ polymerization in the presence of at least partially exfoliated, lightly modified clays as well as admixtures of polymer dispersion with at least partially exfoliated, lightly modifies clay dispersions. The disclosed nanocomposite dispersions are useful for preparing a variety of materials, such as coatings, adhesives, caulks, sealants, plastics additives, and thermoplastic resins. Processes for preparing polymer nanocomposite powders and use of these powders as plastic resin and plastics additives are also disclosed.
Abstract:
The present invention is directed to, in part, polymer clay nanocomposites having an acid containing monomer and clay. In one embodiment, there is provided a process for preparing an aqueous polymer clay nanocomposite dispersion, wherein the process comprises: providing an aqueous dispersion comprising at least one clay, optionally at least one ethylenically unsaturated monomer, and optionally at least one surfactant; providing a monomer mixture comprising at least 10 % by weight of an acid containing monomer within the monomer mixture and optionally a surfactant; mixing the aqueous dispersion and the monomer mixture; and polymerising the monomer to form the nanocomposite dispersion wherein the clay is at least partially exfoliated within the nanocomposite dispersion. The present invention also relates to the use of these compositions such as thickeners, dispersants, plastics additives, adhesives, coatings, flexographic inks, overprint varnishes, and dry cement powder modifiers.