Colored chain extender, copolymerized colored polyurethane emulsion, colored polyurethane-acrylate copolymer emulsion and preparation method thereof
A technology of polyurethane emulsion and polyurethane prepolymer, applied in the field of color chain extenders, can solve problems such as affecting the mechanical properties of polyurethane
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[0018] Specifically, the preparation method of the color chain extender includes the following steps:
[0019] S11, dissolving dye raw materials and hydroxyl functional reagents in a solvent;
[0020] S12, react at 20°C-130°C for 1 hour to 8 hours to obtain the colored chain extender.
[0021] In step S11, the molar ratio of the hydroxyl functional reagent to the dye raw material is 1 / 1 to 6 / 1, preferably, the molar ratio of the hydroxyl functional reagent to the dye raw material is 2 / 1 to 3 / 1. The mass ratio of the solvent to the dye raw material is 5 / 1 to 50 / 1, preferably, the mass ratio of the solvent to the dye raw material is 15 / 1 to 25 / 1.
[0022] The dye raw materials are anthraquinone dyes, such as 1-nitroanthraquinone, 1-methylamino-4-bromoanthraquinone, 1-(4-acyl chloride)benzamidoanthraquinone, etc.; azo dyes, Such as 7-benzamide-3-phenylazo-4-(6-chloro)hexyloxy-2-naphthalenesulfonate, 4-methyl-2-(4-benzamide)phenyl Azo-1-(6-chloro)hexyloxybenzene, 5-(3-methoxy)propylamin...
specific Embodiment
[0057] The present invention will be further described below in conjunction with specific embodiments, but the specific embodiments do not limit the present invention in any way.
[0058] The experimental methods described in the following examples are conventional methods unless otherwise specified.
[0059] The raw materials described in the following examples, in which 1-(4-acyl chloride) benzamidoanthraquinone, 7-benzamido-3-phenylazo-4-(6-chloro)hexyloxy- Sodium 2-naphthalenesulfonate, 4-methyl-2-(4-benzamide) phenylazo-1-(6-chloro)hexyloxybenzene, 5-(3-methoxy)propylamino -8-(2-Methyl-4-nitro)phenylazo-1-(6-chloro)hexyloxybenzene was synthesized according to the method in Chinese patent (application number: 201310073995.X), and the others were all commercially available Way to get.
[0060] In all the following examples: the solid content of the emulsion is determined by the gravimetric method; the particle size and potential of the latex particles are measured on the Zetasiz...
Embodiment 1
[0062] Example 1-Copolymer red polyurethane emulsion
[0063] (1) Synthesis of red chain extender (A): Add 3.80 g of 1-nitroanthraquinone, 5.47 g of 2-amino-1,3-propanediol and 1.59 g of sodium carbonate into a 150 ml single-necked flask, and then add 75 One milliliter of ethylene glycol dimethyl ether was stirred and heated to 85°C for 2.5 hours. After cooling to room temperature, add 300 ml of water, stand still, filter, wash the filter cake with distilled water three times, and then vacuum dry to obtain a red chain extender (A).
[0064] (2) Preparation of copolymerized red polyurethane emulsion: 15 grams of polyether polyol N210, 13 grams of isophorone diisocyanate and 2 drops of dibutyltin dilaurate were added to a three-necked flask, stirred and heated to 80°C and reacted 2 Hours; then add 1.61 g of dimethylolpropionic acid, 1.73 g of 1,6-hexanediol and 0.09 g of red chain extender (A) for chain extension reaction, react at 80°C for 4 hours, cool to 30°C and add 5 ml Aceton...
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