摘要:
The present disclosure relates to an improved electrocoating coating composition wherein the improvement is the addition of a non-water reducible anticrater agent. The non-water reducible anticrater agent is a polyesterurethane that is the reaction product of an aliphatic carboxylic acid anhydride, a monofunctional epoxy compound, a monofunctional alcohol and a diisocyanate and/or a polyisocyanate. The improved electrocoating composition provides cured coatings that have fewer craters and have a smooth surface when compared to coatings utilizing other anticrater additives.
摘要:
A trimerization catalyst composition comprising a trimerization catalyst compound selected from one or more organic metal salt, preferably alkali or earth alkali metal salts, and one or more compounds selected from compounds which comprise a carboxamide group having the structure -CO-NH 2 and/or from compounds which comprise a group having the structure -CO-NH-CO- is disclosed. Further a stable polyisocyanate composition comprising the catalyst composition and a process for making the polyisocyanate composition is disclosed. A curable polyisocyanate composition is obtained comprising the catalyst composition, a polyisocyanate composition, an epoxy resin and optionally a polyol/monool composition and a polyisocyanurate comprising material made by allowing the curable composition to react at elevated temperature and a process for making the polyisocyanurate comprising material.
摘要:
The present invention relates to flat fiber composite components obtainable by impregnating fibers with a reactive resin mixture of polyisocyanates, polyepoxides, polyols and optionally additives, and to a process for production thereof.
摘要:
The invention relates to highly charged cationic dental compositions, comprising at least one compound (A) which may undergo cationic reactions, at least one dental filling (B), optionally at least one dispersant (C), comprising at least one organic polymer or copolymer, at least one cationic photocuring agent and optionally at least one photosensitizer (E), said composition being characterised in that at least one dental filling (B) is treated by a) at least one organosilicon coupling agent (F) and b) at least one compound (G), said organosilicon coupling agent (F), comprising at least one reactive function (frA) directly bonded to a silicon atom forming a chemical bond to the dental filling after activcation and at least one reactive function (frB) indirectly bonded to a silicon atom forming a chemical bond to a reactive function (frC) of the compound (G).
摘要:
The invention relates to a composition that can be polymerized and/or crosslinked when irradiated by cationic and/or radical route. It more particularly relates to a composition that can be polymerized and/or crosslinked comprising at least one base compound, at least one photoinitiator and at least one compound comprising at least one isocyanate function, and its use as a coating.
摘要:
A chain-extended fatty acid modified hydroxy functional epoxy amine adduct ABC which contains urethane groups and comprises moieties derived from epoxy resins A , fatty acids B and amines C , which adduct is chain extended by addition of polyfunctional isocyanates D to the adducts ABC , a process for its production, and methods of use thereof in formulating air-drying aqueous coating compositions as well as one-pack and two-pack aqueous coating compositions
摘要:
Disclosed are methods of treating a metal to improve the metal's corrosion resistance. The method includes applying, to the surface of the metal, a coating which comprises magnesium powder and a binder. The present invention also relates to a coating composition that includes magnesium powder and a silane modified epoxy isocyanate hybrid polymer or prepolymer. The inventors have found that corrosion resistance (as determined by ProhesionTM exposure in accordance with ASTM D5894-96, which is hereby incorporated by reference) in excess of 3,000 hours on 2024 T-3 aluminum alloy can be achieved with the methods and coating compositions of the present invention.