摘要:
Corrosion-resistant, self-priming coatings that are curable by ultraviolet energy and methods for coating surfaces using such coatings have been provided. In an exemplary embodiment, a method for coating a surface includes formulating a chromium-free, self-priming coating, applying the chromium-free, self-priming coating to the surface, and curing the chromium-free, self-priming coating with ultraviolet light.
摘要:
Corrosion-resistant, self-priming coatings that are curable by ultraviolet energy and methods for coating surfaces using such coatings have been provided. In an exemplary embodiment, a method for coating a surface includes formulating a chromium-free, self-priming coating, applying the chromium-free, self-priming coating to the surface, and curing the chromium-free, self-priming coating with ultraviolet light.
摘要:
A dual curable composition is provided, comprising a compound represented by formula (I): (acrylate)a-(A)-(silane)b (I) in which a and b are identical or different and are each represented by an integer greater than or equal to 1; and wherein the dual curable composition is radiation curable and/or moisture curable. The moiety A comprises at least one of an aliphatic hydrocarbon, a cycloaliphatic hydrocarbon, an aryl moiety, an ether, an ester, an amide, a urethane, a urea, a hydroxyl group-containing organic moiety, an acrylic oligomer, an epoxy oligomer, a urethane oligomer, a polyester oligomer, or mixtures thereof, and the dual curable composition has a molecular weight greater than or equal to 300.
摘要:
A radiation-curable coating composition is described which comprises (A) from about 70% to about 99% by weight of at least one polyfunctional acrylate monomer containing at least one internal flexible unit; (B) from about 1% to about 30% by weight of at least one other reactive vinyl or unsaturated monomer provided the reactive vinyl or unsaturated monomer (B) is not the same as the monomer of (A); and (C) from about 0% to about 10% by weight of at least one photoinitiator, provided that the composition is free of methacrylic functionalized colloidal silica. A method of coating a substrate utilizing the radiation-curable compositions of the present invention, and a substrate coated in accordance with the method of the invention are also described.
摘要:
A polyamide is produced by polymerizing at least one of alpha, beta unsaturated carboxylic acid, an ammonium salt of an alpha, beta unsaturated carboxylic acid, an alpha, beta unsaturated nitrile and water, a beta-amino propionic acid or alkyl derivative thereof and an alpha, beta unsaturated amide and ammonia in the presence of a catalyst containing cobalt. Preferred catalysts comprise cobaltous carboxylates and cobaltic salts of the enol of beta-di-ketones.
摘要:
A dual curable composition is provided, comprising a compound represented by formula (I): (acrylate)a-(A)-(silane)b (I) in which a and b are identical or different and are each represented by an integer greater than or equal to 1; and wherein the dual curable composition is radiation curable and/or moisture curable. The moiety A comprises at least one of an aliphatic hydrocarbon, a cycloaliphatic hydrocarbon, an aryl moiety, an ether, an ester, an amide, a urethane, a urea, a hydroxyl group-containing organic moiety, an acrylic oligomer, an epoxy oligomer, a urethane oligomer, a polyester oligomer, or mixtures thereof, and the dual curable composition has a molecular weight greater than or equal to 300.
摘要:
In one embodiment, the present invention relates to a label containing a substrate layer, and a security coating on at least one side of the substrate layer containing: from about 50% to about 99.999% by weight of a film forming material, and from about 0.001 % to about 5% by weight of at least one taggant compound, wherein the taggant compound is substantially uniformly dispersed within the film forming material. In another embodiment, the present invention relates to a method of authenticating a product, involving: affixing a label to the product, the label containing a substrate layer, and a security coating on at least one side of the substrate layer containing: from about 50% to about 99.999% by weight of a film forming material, and from about 0.001% to about 5% by weight of at least one taggant compound, wherein the taggant compound emits light of a known wavelength after irradiated with light of a first wavelength; irradiating the product with light of the first wavelength; determining whether or not the product emits light of the known wavelength; and authenticating the product if the wavelength of the light emitted by the product is substantially the same as the known wavelength.
摘要:
Nylon-type polyamides are produced from a diamine and a diamide in contact with a catalyst comprising a carboxamide. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with a carboxamide, at an elevated temperature and pressure.
摘要:
Nylon-type polyamides are produced from a diamine and a diamide in contact with a catalyst comprising a urea, thiourea, or derivatives thereof. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with urea, thiourea, or derivatives thereof catalyst, at an elevated temperature and pressure.
摘要:
Polyamides are produced from diamines, dinitriles, and water in contact with a two-component catalyst system comprising (1) at least one copper containing compound and (2) at least one oxygen containing compound of phosphorus or sulfur.