Micelles series. 31. Building blocks for cascade polymers. 11. Synthesis of functionalized cascade cores: tetrakis(.omega.-bromoalkyl)methanes
摘要:
A series of tetrakis(bromoalkyl)methanes was synthesized and characterized. The tetrakis(3-bromopropyl)methane was chosen as ideal core to cascade polymers, since it undergoes facile substitution with bulky nucleophiles, denoting the need for at least three carbon atoms between the quaternary center and the leaving group to circumvent major steric problems caused by the core carbon. The readily available 4-nitro-4-(3-hydroxypropyl)-1,7-heptanediol was used to afford a novel entry to tetrakis(3-bromopropyl)methane as well as other building blocks to cascade polymers.
Solvent-containing coating material and the use thereof
申请人:——
公开号:US20040019142A1
公开(公告)日:2004-01-29
Method for making a solvent-containing coating material comprising 5 to 70% by weight of at least one mixture of substances (A). The mixture of substances is obtained by copolymerizing in at least one hydroxy-group containing reactive diluent a mixture (A1) of olefinically unsaturated monomers that contain a1) 1 to 90% by weight, based on mixture (A1), of at least one cycloaliphatic monomer and a2) 0 to 90% by weight, based on mixture (A1), of at least one hydroxy-group containing monomer. The coating material further contains 5 to 70% by weight of at least one hydroxy-group containing polyaddition resin (polyadduct) (B) with a M
n
of 800 to 3,500 and 5 to 70% by weight of at least one cross-linking agent (C) for thermally cross-linking the material. The weight of A, B, and C are based on the solid content of the coating material.
Aqueous coating material that can be hardened thermally and/or by using actinic radiation and, the use thereof
申请人:——
公开号:US20030032719A1
公开(公告)日:2003-02-13
The invention relates to an aqueous coating material that can be hardened thermally and/or by using actinic radiation. Said coating material contains: A) at least one polyurethane, which is saturated, unsaturated and/or which is grafted with olefinically unsaturated compounds and ionically and/or non-ionically stabilized, is used as a binding agent; B) at least one cross-linking agent, and; C) at least one chromophoric and/or effect-producing pigment. The coating material is characterized in that hexamethylene diisocyanate and/or at least one polyisocyanate based on hexamethylene diisocyanate is/are used as the cross-linking agent (B), which is completely blocked with a mixture consisting of, with regard to the present isocyanate groups to be blocked, B1) 25 to 75 mol % of at least one malonic acid dialkyl ester, and of B2) 75 to 25 mol % of at least one dialkyl ketoxime. The invention also relates to the use of the aqueous coating substance for producing single and multilayer chromophoric and/or effect-producing paints on primed and non-primed substrates.
Low-yellowing aqueous clear powder coating dispersions, method of making the dispersions, and process for producing clearcoat finishes with the dispersions
申请人:——
公开号:US20030059553A1
公开(公告)日:2003-03-27
The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which oxalic acid is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.
Aqueous composition that can be hardened physically, thermally or thermally and with actinic radiation and the derivatives and production thereof
申请人:——
公开号:US20030100626A1
公开(公告)日:2003-05-29
The invention concerns a novel aqueous composition that can be hardened physically, thermally and/or with actinic radiation, containing a compound of general formula (I): X[NH—C(═O)—NH—Y—NH—C(═O)—OR]2 having at least one urea and urethane group, wherein the variables have the following meaning: R represents identical or different polyalkylene glycol ether radicals; X represents a bivalent substituted or unsubstituted arylene radical; Y represents identical bivalent substituted or unsubstituted arylene radicals, which are the same as or different from radical X or different bivalent substituted or unsubstituted arylene radicals of which none or one is identical to radical X. The invention also concerns the utilization of said compound for the production of novel aqueous coating materials, adhesives and sealants that can be hardened physically, thermally or thermally and with actinic radiation and their derivatives.
本发明涉及一种可通过物理、热和/或光辐射硬化的新型水性组合物,该组合物含有通式(I)的化合物:X[NH-C(═O)-NH-Y-NH-C(═O)-OR]2,至少有一个脲基和一个氨基甲酸酯基,其中变量的含义如下:R 代表相同或不同的聚亚烷基乙二醇醚基团;X 代表二价取代或未取代的芳烯基团;Y 代表相同的二价取代或未取代的芳烯基团,它们与基团 X 相同或不同,或者代表不同的二价取代或未取代的芳烯基团,其中没有一个或一个与基团 X 相同。本发明还涉及利用上述化合物生产新型水性涂层材料、粘合剂和密封剂,这些材料、粘合剂和密封剂可以物理硬化、热硬化或热硬化,也可以用放线辐射及其衍生物硬化。
Aqueous coating material that can be hardened physically, thermally or thermally and with actinic radiation and the utilization thereof
申请人:——
公开号:US20030139512A1
公开(公告)日:2003-07-24
An aqueous coating material curable physically, thermally, or both thermally and with actinic radiation, comprising
A) at least one ionically and/or nonionically stabilized polyurethane which is saturated, unsaturated and/or grafted with olefinically unsaturated compounds, as binder,
B) at least one color and/or effect pigment, and
C) at least one colorless, transparent or opaque powder which is substantially inert with respect to the other constituents of the coating material and whose particles have an average size of from 1.0 to 10.0 &mgr;m and a density of from 0.8 to 3.6 g cm
−3
;
and its use for producing single-coat and multicoat color and/or effect paint systems on primed and unprimed substrates.
一种可物理固化、热固化或热固化和光辐射固化的水性涂层材料,包括
A) 至少一种饱和、不饱和和/或接枝有烯烃不饱和化合物的离子和/或非离子稳定聚 氨酯,作为粘合剂、
B) 至少一种颜色和/或效果颜料,以及
C) 至少一种无色、透明或不透明的粉末,相对于涂层材料的其他成分而言,这种粉末基本上是惰性的,其颗粒的平均尺寸为 1.0 至 10.0 &mgr;m,密度为 0.8 至 3.6 g cm
-3
;
其用途是在涂过底漆和未涂过底漆的基材上生产单层和多层色彩和/或效果涂料体系。