摘要:
The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of ≦130° C. A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring. The present invention also relates to the binders obtained by the process of the invention and to coating compositions containing these binders.
摘要:
The invention relates to novel coated post-formable films, to surface-coating compositions for such films, to a combined method for curing the surface-coating compositions and for post-forming, as well as to molded bodies produced from the coated films.
摘要:
Optical recording mediums comprising a substrate and a recording layer and a light transmitting layer sequentially disposed on the substrate; wherein the substrate comprises one or more parts selected from the group consisting of injection molded parts, injection molded sandwich structures having a molded surface layer and a molded core layer or two injection molded parts which are UV-bonded, and combinations thereof; and wherein the substrate has a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05.
摘要翻译:包括基板和记录层的光记录介质和顺序地设置在基板上的透光层; 其特征在于,所述基板包括选自注射成型部件,具有模制表面层的注射成型夹层结构和模制芯层或两个UV结合的注射成型部件的一个或多个部件及其组合; 并且其中所述基材的杨氏模量E至少为2.15GPa,Q值低于160,根据ASTM E 756-05在25℃下以2000Hz测量。
摘要:
Process for preparing binders including reacting A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds containing groups capable of participating in polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and contain isocyanate-reactive groups, followed by C) reaction with one or more hydroxyl-containing compounds other than B), wherein at least one of these compounds has an OH functionality of≧2, D) in the presence of one or more compounds containing phenoxide groups, as catalysts, and E) optionally auxiliaries and additives, where the reaction with compounds of component C) proceeds at least proportionally with the formation of allophanate groups and where and including binders containing allophanate groups and groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and optionally also contain NCO-reactive groups. The binders are used in coating compositions used to coat substrates.
摘要:
Solvent-based, dual cure coatings incorporating thermally curable blocked polyisocyanates, which also contain unsaturated linkages, and a method for preparing these coatings. The unsaturated linkages, such as acrylate groups, can be crosslinked by free-radical mechanisms such as UV curing.
摘要:
The present invention relates to blocked polyisocyanates containing at least one radiation-curable groups and at least one structural unit of the formula (II) wherein R1, R2 and R3 independently of one another are hydrogen or a C1-C4 alkyl radical or a cycloalkyl radical, R4 is a C1-C4 alkyl, C6-C10 cycloalkyl or C7-C14 aralkyl radical and x is an integer from 1 to 5. The present invention also relates to a process for preparing these blocked polyisocyanates and to dual-cure coating, adhesive or sealant compositions containing these polyisocyanates.
摘要:
The present invention relates to water-free and cosolvent-free binder compositions A) containing of a mixture of A1) at least one emulsifier-free, hydrophobic binder containing groups which can be polymerized by high-energy radiation and A2) at least one hydrophilic unsaturated polyester resin containing the reaction product of a) at least one unsaturated dicarboxylic acid and/or an anhydride thereof, b) at least one polyalkylene oxide compound having a number average molecular weight of 106 to 2000, at least 2 hydroxyl end groups and at least 2 oxyalkylene units, wherein at least 50% of the oxyalkylene units are oxyethylene units, and c) at least one hydroxy-functional compound containing at least one polymerizable unsaturated group per molecule selected from vinyl, allyl, methacrylic and acrylic groups. The present invention also relates to aqueous dispersions containing the binder compositions A), to a process for preparing an aqueous dispersion containing the binder dispersion, to a process for diluting the binder composition with tap water, to producing coatings from the aqueous dispersions and to the use of the binder compositions for preparing coating, adhesive or sealant compositions.
摘要:
The invention provides innovative blocked polyisocyanates whose crosslinking is initiated thermally and photochemically. The polyisocyanates comprise at least one thermally reversibly blocked NCO group whose blocking agent contains at least one group which on exposure to actinic radiation reacts, with polymerization, with ethylenically unsaturated compounds. A process for preparing the polyisocyanates, and their use in binders, is also provided.
摘要:
The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures ≦130° C. A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds that contain isocyanate-reactive groups and groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and then C) with one or more saturated, hydroxyl-containing compounds other than B), at least one of these compounds having an OH functionality of ≧2, in the presence of D) a catalyst containing one or more ammonium salts or phosphonium salts of aliphatic or cycloaliphatic carboxylic acids, the reaction with compounds C) taking place at least proportionally with the formation of allophanate groups. The present invention also relates to the binders obtained by the process of the invention.