摘要:
To provide a photochromic coating composition comprising (A) a polyrotaxane having a composite molecular structure formed by an axial molecule and a plurality of cyclic molecules clathrating the axial molecule, (B) a photochromic compound and (C) a polyurethane resin and/or precursor thereof.This composition provides a laminate which exhibits excellent photochromic properties (color optical density and fading speed), moldability and surface hardness.
摘要:
A method includes coating a substrate to provide a flame resistant substrate. In an embodiment, the method includes preparing an aqueous solution. The aqueous solution comprises a phosphate material, a cationic material, and a water. The method further includes exposing the substrate to the aqueous solution to produce a coating on the substrate. The coating includes the cationic material and the phosphate material. The method also includes exposing the coating on the substrate to a melamine solution.
摘要:
Photo-activated polymers and co-polymers exhibit colors in the visible spectrum when photo-activated. The photo-active polymers, co-polymers and combinations thereof may be utilized in articles to impart color to the articles. For example, the photo-active polymers may be utilized in printing technology, such as in 2D printing and/or in 3D-printing methods to impart colors to articles.
摘要:
A material for a surface modifying agent with which the problems of insufficient durability as abrasion and chemical resistances of surface modification effect in polyurethane surface modification by the prior surface modifying agent are resolved, and is immobilized in a matrix resin firmly and improved in durability. A reactive fluorine-containing highly branched polymer obtained by: polymerizing monomer A having in a molecule two or more radically polymerizable double bonds, monomer B having in a molecule a fluoroalkyl group and at least one radically polymerizable double bond, and monomer C having in a molecule an alcoholic hydroxy group and minimum, one radically polymerizable double bond, in presence of a polymerization initiator D in an amount of 5 % to 200 % by mole with respect to the number of moles of the monomer A; a curable composition containing the reactive fluorine-containing highly branched polymer; and a cured film obtained from the composition.
摘要:
An article, comprising a substrate and a polymer film attached to the substrate is provided, the polymer film comprising a first layer of a first polymer functionalized by a first functionalization compound covalently bound to said first polymer and bearing at least one catecholic group being present on a surface of the first layer. The polymer film is a layered film, a top layer of which is formed by the first layer, the layered film comprising at least one further layer of at least one further polymer functionalized by a further functionalization compound covalently bound to said further polymer and bearing at least one catecholic group being present on a surface of the at least one further layer, wherein an average ratio of catecholic groups per polymer molecule is equal to or less than 1 in case of the first polymer and greater than 1 in case of the further polymer.
摘要:
A method for producing a substrate having dispersed particles of a dendrimer compound on the surface thereof, the method including: an application step including dissolving a phenyl azomethine dendrimer compound in a solvent to prepare a solution, and applying the solution on the surface of a substrate; and a volatilization step including volatilizing the solvent from the solution applied on the surface of the substrate, the phenyl azomethine dendrimer compound included in the solution having a concentration of no greater than 5 μmol/L is employed.
摘要:
The invention relates to coating compositions comprising (a) at least one hydroxyl-containing compound (A), (b) at least one saturated compound (B) having free and/or blocked isocyanate groups and containing at least in part hydrolyzable silane groups, and (c) at least one catalyst (D) for the crosslinking of silane groups, wherein the coating composition comprises as hydroxyl-containing compound (A) at least one hyperbranched, dendritic hydroxy-functional polyester in which on average at least one hydroxyl function of the polyester is esterified with at least one acid selected from the group of the isomeric C8 to C9 monocarboxylic acids. The present invention also provides a multistage coating method using these coating compositions, and also the use of the coating compositions as clearcoat material for producing multicoat effect and/or color paint systems, and use of the coating method for automotive OEM finishing and automotive refinish.
摘要:
A topcoat having a polyfunctional scaffold in the form of a hyperbranched polymer (HBP) with a buoy group coupled to the HBP. The HBP can also have a “delivered” group and/or an anchor group coupled thereto. The buoy group can be a fluorinated chain end, one or more fluorinated and aliphatic chain ends and/or one or more wholly aliphatic chain ends. The “delivered” group can contain at least one of an ionic species, a fluorescent tag, a bioreactive site, a catalyst and the like, and the anchor group an epoxy, a (meth)acrylate or an isocyanate. The water-disbursable topcoat can also include a solubilizing group such as 2-butanone or 4-methyl-2-pentanone coupled to the HBP.
摘要:
An oxygen-scavenging composition is provided that includes an oxygen-scavenging polymer and a catalyst. The oxygen-scavenging polymer, which in preferred embodiments is suitable for use in packaging articles, is a dendritic polymer having one or more oxygen-scavenging groups.
摘要:
The invention provides a radiation-curable alkoxy silanized hyperbranched polyester acrylate, characterized in that the radiation-curable alkoxy silanized hyperbranched polyester acrylate is produced by using a hyperbranched molecule with at least 16 functionalities as a core; acrylating or methacrylating a portion of the terminal groups of the hyperbranched molecule; and terminating a portion of the end groups of the hyperbranched molecule with an isocyanated silane coupling agent. The acrylate of the invention can be formed into a coating on polar substrates, such as glass or metal, or used as an adhesive.