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Non-isocyan acid water ultraviolet (UV) polyurethane prepared from natural polyhydroxy saccharides and preparation method thereof

A polyhydroxy saccharide and polyurethane technology, which is applied in the field of non-isocyanate water-based UV polyurethane, can solve the problems of worker harm and death danger, and achieve the effect of reducing reaction conditions and raw material requirements, low raw material cost and wide source.

Active Publication Date: 2013-12-11
湖南罗比特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inhalation of phosgene can cause pulmonary edema, pneumonia, etc., which is fatal and extremely harmful to production workers

Method used

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  • Non-isocyan acid water ultraviolet (UV) polyurethane prepared from natural polyhydroxy saccharides and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 40 parts of glucose, 0.3 parts of stannous octoate and 5 parts of DMF by weight (all the following examples are the same) to a dry and clean stainless steel autoclave with a stirring volume of 100 ml, heat to 100 ° C, and pass in CO 2 , keep the pressure at 1MPa, stir and react for 3 hours, stop heating and stirring, and slowly vent unreacted CO after cooling 2 , to obtain a cyclic carbonate.

[0033] Take 36 parts of the cyclic carbonate obtained above in a three-necked flask, add 0.05 parts of p-hydroxyanisole and 12 parts of acrylic acid in sequence, and control the temperature at 70°C for 1 hour; after the reaction is complete, cool to room temperature and add 3 parts Tollens reagent, react for 0.5 hours; add 17 parts of triethylamine and stir for 10 minutes, then add 70 parts of diaminodicyclohexylmethane, heat up to 70°C and react for 2 hours, keep warm for 2 hours and then cool to room temperature, that is Get the product.

Embodiment 2

[0035] Add 41 parts of glucose, 0.5 parts of dibutyltin dilaurate and 5 parts of DMF into a dry and clean stainless steel autoclave with a stirring volume of 100 ml, heat to 110 ° C, and pass in CO 2 , keep the pressure at 1.5MPa, stir and react for 3.5 hours, stop heating and stirring, and slowly vent unreacted CO after cooling 2 , to obtain a cyclic carbonate.

[0036] Take 38 parts of the cyclic carbonate obtained above in a three-necked flask, add 0.1 parts of hydroquinone and 14.5 parts of methacrylic acid in sequence, and control the temperature at 80°C for 1.5 hours; after the reaction is complete, cool to room temperature and add 3 parts of Tollens reagent, react for 1 hour; add 19 parts of triethylamine and stir for 10 minutes, then add 55 parts of isophorone diamine, heat up to 75 ° C and react for 2.5 hours, keep warm for 2 hours and cool to room temperature, that is Get the product.

Embodiment 3

[0038] Add 42 parts of glucose, 0.6 parts of dioctyl stannous and 5 parts of DMF into a dry and clean stirred stainless steel autoclave with a volume of 100 ml, heat to 130 ° C, and pass in CO 2 , keep the pressure at 2Mpa, stir and react for 4 hours, stop heating and stirring, and slowly vent unreacted CO after cooling 2 , to obtain a cyclic carbonate.

[0039] Take 40 parts of the cyclic carbonate obtained above in a three-necked flask, add 0.1 parts of p-hydroxyanisole and 15 parts of methacrylic acid in sequence, and control the temperature at 80°C for 2 hours; after the reaction is complete, cool to room temperature, add 5 parts of Fehling reagent, react for 1 hour; then add 20 parts of triethylamine and stir for 10 minutes, then add 66 parts of benzhydrylmethanediamine, heat up to 80°C and react for 3 hours, keep warm for 2 hours and cool to At room temperature, the product was obtained.

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Abstract

The invention discloses a non-isocyan acid water UV polyurethane prepared from natural polyhydroxy saccharides and a preparation method thereof. The formula includes that the non-isocyan acid water UV polyurethane is composed of, by weight, 36 to 42 parts of cyclic carbonate, 0.05 to 0.1 part of polymerization inhibitors, 55 to 70 parts ofbinary primary amine compounds, 3 to 5 parts of oxidants, 12 to 16 parts of chain extenders and 17 to 20 parts of neutralizers; wherein the formula of the cyclic carbonate is composed of, by weight, 40 to 42 parts of polyhydroxy saccharides, 0.3 to 0.6 part of organic tin catalysts, and 5 to 6 parts of organic solvents. The non-isocyan acid water UV polyurethane is a novel environment friendly polyurethane synthesized by using materials of renewable resource saccharides, inexhaustible CO2 and the like, synthesizing raw materials are nontoxic, and toxic substances are not used during the preparation process. The operation is simple, and materials are low in cost and wide in resource; further, CO2 is consumed, so that the greenhouse effect is reduced, and the trend of environmental protection is conformed.

Description

technical field [0001] The invention relates to a non-isocyanic acid water-based UV polyurethane prepared based on natural polyhydroxy sugars and a method thereof. Background technique [0002] In 1937, since the German chemical Otto Bayer synthesized polyurethane by polymerization and addition of polyisocyanate and polyhydroxy compound, polyurethane has been widely used in coatings, adhesives, foam plastics and elastomers due to its excellent comprehensive properties, and has become an important part of people's life. of synthetic materials. UV waterborne polyurethane is one of the research hotspots and development trends of polyurethane in recent years. It uses water as the dispersion medium and combines the advantages of ultraviolet curing technology. It has the characteristics of low environmental pollution, biodegradation, and sustainability. This requires that water-based polyurethane must be environmentally friendly, non-toxic and harmless from product design, raw ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G71/04
Inventor 雷嘉刘群俊全春喜
Owner 湖南罗比特新材料有限公司
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