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Polyurethane oil/polyacrylate latex interpenetrating network polymer emulsion material and synthesizing process thereof

A polyacrylate, polymer emulsion technology, applied in the direction of coating, etc.

Inactive Publication Date: 2010-12-15
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is exactly to provide a kind of high-gloss aqueous dispersion material---polyurethane oil / polyacrylate latex interpenetrating network polymer emulsion material in order to solve the problem that the water dispersion material glossiness is low, this material is compared with general Water dispersion, with high gloss, can effectively solve the surface finishing problems of general water-based metal coatings, wood coatings, leather coatings, and paper coatings, and further improve the comprehensive performance of materials

Method used

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  • Polyurethane oil/polyacrylate latex interpenetrating network polymer emulsion material and synthesizing process thereof
  • Polyurethane oil/polyacrylate latex interpenetrating network polymer emulsion material and synthesizing process thereof
  • Polyurethane oil/polyacrylate latex interpenetrating network polymer emulsion material and synthesizing process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Add 110 grams of alkali-bleached cannabis oil and 23.5 grams of glycerin into a 500-milliliter four-neck bottle with heating equipment and a vacuum system, start stirring, heat up, and start vacuuming when it is close to 100 ° C. The vacuum degree is kept at 750-760mmHg, heat at 120°C for 2 hours for dehydration. Then remove the vacuum, put in nitrogen protection, install a reflux condenser, add 0.2 grams of lithium hydroxide, raise the temperature to 200-240 ° C for 2-3 hours, until the tolerance of methanol is 1:2-3, add 0.2 gram of phosphoric acid, stir evenly, quickly cool down to 40-50°C, discharge, filter, and pack to obtain the alcoholyzate, which is ready for use.

[0047] Add 26.7 grams of the above-mentioned alcoholyzate and 30.6 grams of polyether 1000 into a 1000 ml four-necked bottle with a heating and vacuum system, start stirring and heating to 100 ° C to start vacuuming, the temperature is kept at 120 ° C and the vacuum degree is 750 Dehydration at -760...

Embodiment 2

[0050] Heat 20.0 grams of alkali-bleached cannabis oil, 4.7 grams of glycerin and 0.052 grams of lithium hydroxide to 120°C under stirring, then dehydrate under vacuum at 750-760mmHg for 1 hour, then remove the vacuum and heat up to 220-250°C After alcoholysis for 2-3 hours until the tolerance of methanol is 1:2-3, add an appropriate amount of phosphoric acid to decompose the residual catalyst, quickly cool down to 150°C, add 30.6 grams of polyether 1000 to the reactor and keep the temperature at 120°C, The vacuum degree is 750-760mmHg dehydration for 1.5 hours. Remove the vacuum, lower the temperature to 60°C, install a reflux condenser, add 50.5 grams of isophorone diisocyanate (IPDI), keep the temperature at 70-80°C, react for 3-4 hours and then cool down to 60°C, add 6.7 grams of dimethylol Butyric acid (DMBA) and 15 ml butanone were reacted at 75-85° C. for 6 hours under reflux. Cool down to 40°C, add 3.1 g of triethylamine and stir thoroughly for 5 minutes, increase the...

Embodiment 3

[0053] Heat 20.1 grams of alkali-bleached tung oil, 12 grams of trimethylolpropane and 0.03 grams of calcium oxide to 120°C under stirring, then dehydrate under vacuum at 760mmHg for 2 hours, then remove the vacuum and raise the temperature to 240-250°C. After alcoholysis for 3 hours until the tolerance of methanol is 1:2-3, add an appropriate amount of phosphoric acid to decompose the residual catalyst and quickly cool down to 150°C, then add 51.6 grams of polyether 2000 to the reactor, keep the temperature at 110°C, and The vacuum degree is 750-760mmHg, dehydrate for 1 hour, remove the vacuum, cool down to 60°C, install a reflux condenser, add 54.86 grams of isophorone diisocyanate (IPDI), keep the temperature at 70-80°C, and cool down to 50°C after 4 hours of reaction. 10.54 grams of dihydroxypropionic acid (DMBA) and 20 milliliters of methyl ethyl ketone were added at ℃, and reacted at 75-85 ℃ for 5 hours under reflux. Cool down to 40°C, add 6.9 grams of triethylamine and ...

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Abstract

The invention discloses a new polyurethane oil / polyacrylate latex interpenetrating network polymer emulsion material and a synthesizing process thereof. The average particle diameter of the emulsion colloidal particles is less than 200nm, the topography characteristic of the particles is a multi-layer colloidal particle structure, the core is a polyurethane oil polyacrylate graft copolymer, and the outer layer is a hydrophilic polymer of the polyurethane oil. The synthesizing process comprises the following steps: preparing an alcoholysate from drying oil or semi-drying oil and low-molecular-weight polyalcohol; synthesizing a polyurethane oil solution and ionizing; preparing polyurethane oil-water dispersion; and preparing the polyurethane oil / polyacrylate latex interpenetrating network polymer emulsion material LIPN PUO / PA. Compared with the general water dispersion, the emulsion of the invention has higher luster and can effectively solve the problem of surface finish of a general water-base metal coating, a wooden ware coating, a leather coating and a paper coating, thus further improving the over-all properties of the material.

Description

technical field [0001] The invention relates to a latex interpenetrating network polymer and its synthesis process which can be used as a leather finishing agent and glazing oil, a wood paint brightener, an automobile intermediate coating and a surface coating, and a metal decorative coating, and specifically a polyurethane Oil / polyacrylate latex interpenetrating network emulsion material and its synthesis process. Background technique [0002] Latex interpenetrating network polymer (LIPN) L.H.Sperling & D.A.Thomas applied for a U.S. patent (U.S.Pat.3,833,404(1974)) in 1974, which is mainly used to manufacture damping coatings. Domestic research on LIPN was also carried out in the 1980s, but so far, the problem of "low gloss of the coating", which is a common drawback of all water dispersion materials, has not been solved. It is reported that the exterior decoration of major European automobile manufacturing companies has been water-based from primer, mid-coat to top coat, ...

Claims

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Application Information

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IPC IPC(8): C08L51/08C08F283/00C08F2/24C08G18/67C08G18/66C09D151/08
Inventor 肖继君耿耀宗
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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