摘要:
The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H12MDI) from bis{4-isocyanatophenyl}methane (MDI). More especially, the invention relates to a method for synthesis of H12MDI with a trans-trans isomer content of
摘要翻译:本发明涉及一种基本上由三个阶段合成芳族异氰酸酯的脂族异氰酸酯的方法。 特别地,本发明涉及由双{4-异氰酸基苯基}甲烷(MDI)合成双{4-异氰酸根合环己基}甲烷(H 12 C 12 MDI)的方法。 更具体地说,本发明涉及一种具有反式异构体含量<30%,优选<20%,特别优选5-15%的H 12 MDI的合成方法。
摘要:
Light-stable and weather-stable coating films contain a powder coating composition, containing from 30 to 98.5% by mass of a binder containing at least one urethane (meth)acrylate having a melting point of from 40 to 130° C.; from 1 to 20% by mass of at least one micronized wax; and from 0.5 to 50% by mass of at least one auxiliary and/or at least one additive, the composition being cross-linked by actinic radiation.
摘要:
A radiation curable powder coating composition that contains a) a binder having at least one amorphous urethane acrylate having a glass transition temperature of at least 35° C. and a melting point of from 50 to 120° C.; and b) an auxiliary, can be crosslinked by radiation to produce a lightfast and weather-stable film.
摘要:
A solid, oxazoline-terminated, urethane-functional polyaddition compound having a melting point ranging from 40-130° C. and a free NCO content of less than 3% by weight, consisting essentially of a reaction product of a) at least one at least difunctional polyisocyanate and b) at least one hydroxy- or amino-functional oxazoline derivative, the ratio of NCO to OH equivalents ranging from 0.8:1.2 to 1.2:0.8.