摘要:
Disclosed is a thermosetting resin composition including; (A) a carboxyl group-containing polyurethane prepared by using (a) a polyisocyanate compound (b) polyol compounds (c) a carboxyl group-containing dihydroxy compound as raw materials, (B) a curing agent, wherein the polyol compounds (b) are one or more kinds of polyol compound(s) selected from Group (I) and one or more kinds of polyol compound(s) selected from Group (II); Group I: polycarbonate polyol, polyether polyol, polyester polyol, and polylactone polyol, Group II: polybutadiene polyol, polysilicone having terminal hydroxyl groups, and such a polyol that has 18 to 72 carbon atoms and oxygen atoms present only in hydroxyl groups. The thermosetting resin composition can give a protection film for flexible printed circuits that has excellent long-term reliability of electric insulation, flexibility, and low warpage from curing shrinkage, and particularly low tackiness.
摘要:
The invention relates to coating formulations (B) which comprise a) 20 - 90 % by weight, based on the solids content, of a hydroxyl group functional coating resin (L), b) 1 - 90 % by weight, based on the solids content, of a coat hardener (H), selected from coat hardeners containing protected and unprotected isocyanate groups, melamine-formaldehyde resins and tris(aminocarbony)triazines, c) 0.05 - 5 % by weight, based on the solids content, of particles (P), having functionalities on their surfaces that are reactive in relation to the coat hardener (H), d) 0 - 90 % by weight, based on the entire coating formulation (B), of a solvent or a solvent mixture, the particles (P) being obtainable by reacting colloidal metal or silicon oxide sols (P1) with organosilanes (A), selected from general formulae (I) and (II), wherein R1, R2, R4, A, X, Y, m, n and q are defined as in claim 1.
摘要:
The invention relates to radiation-curable aqueous composition comprising an ethylenically unsaturated polyurethane pre-polymer obtained from the reaction of a polyisocyanate, a high molecular weight polyol, at least one hydrophilic compound containing at least one reactive group capable to react with isocyanate groups and which is capable to render the polyurethane pre-polymer dispersible in aqueous medium either directly or after the reaction with a neutralizing agent to provide a salt, an ethylenically unsaturated compound containing at least two reactive groups capable to react with isocyanate groups and an ethylenically unsaturated compound containing essentially one reactive group capable to react with isocyanate groups, said composition comprising an amount of polymerizable ethylenically unsaturated groups of at least 3 meq per g.
摘要:
The present invention provides for a sealer/primer that is generally cured at low bake temperatures. The composition utilizes a resin system to provide both conductivity and adhesion of the coating onto plastic substrates. The present invention uses a polyester, such as one that includes unsaturated polyester, in combination with other resins, including an acrylic, crosslinking agent and conductive pigment to create a conductive primer that can be cured at low temperatures. The composition can be applied through traditional application equipment, seals the surface of the substrate to which it is applied, and cures to an acceptable surface for further processing, such as painting.
摘要:
A radiation curable coating composition that includes from about 5 to about 70% by weight of the reaction product of i) one or more polyisocyanates, where at least 10 equivalent percent of the isocyanate groups are in the form of uretdione groups, and ii) one or more hydroxy functional lactone ester (meth)acrylates. The amount of component i), on an isocyanate equivalent basis, is equal to the amount of hydroxy equivalents of hydroxy containing materials in the composition. The composition can be used to coat substrates by coating at least a portion of the substrate with the above-described coating composition and subjecting the coated substrate to radiation.
摘要:
Die vorliegende Erfindung betrifft ein vereinfachtes Verfahren zur Herstellung von niedrigviskosen Umsetzungsprodukten von Polyisocyanaten, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation reagierende Gruppen enthalten.
摘要:
The invention relates to a polyurethane (B), comprising lateral and/or terminal ethenylarylene groups which can be produced by reacting a polyurethane prepolymer containing free isocyanate groups with an adduct that can be obtained by reacting an ethenylarylene monoisocyanate with a polyol, polyamine and/or a compound containing hydroxyl groups and amino groups in a molar ratio of 1:1. The invention also relates to a graft mixed polymer containing a hydrophobic core, consisting of at least one monomer and a hydrophilic shell which contains a polyurethane, or consists thereof, or a hydrophobic core, containing a polyurethane or consisting of the same and a hydrophilic shell which consists of at least one monomer that can be produced using the polyurethane (B). In addition, the invention relates to a graft mixed polymer containing a hydrophobic core, consisting of at least one monomer and a hydrophilic shell which contains a polyurethane, or consists thereof, that can be produced by dispersing at least one hydrophilic olefinic unsaturated polyurethane comprising lateral, or lateral and terminal ethenylarylene groups in an aqueous medium and subsequently copolymerising at least one hydrophobic monomer by radical copolymerisation, in the presence of the polyurethane in emulsion.
摘要:
Die vorliegende Erfindung betrifft niedrigviskose Umsetzungsprodukte von Alkoholen, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation reagierende Gruppen enthalten, mit Polyisocyanaten ein Verfahren zu ihrer Herstellung sowie deren Verwendung in Beschichtungsmitteln.