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A kind of environmental protection type nitrocellulose leather brightener and preparation method thereof

A technology of nitrocellulose and brightening agent, applied in chemical instruments and methods, polishing compositions and other directions, can solve the problems of poor stability of nitrocellulose emulsion, high flammability and explosiveness, and unsatisfactory rotation speed, and achieves improvement. Nursing effect, longevity improvement, emission reduction effect

Active Publication Date: 2019-02-01
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But on the one hand, the current domestic environment-friendly nitrocellulose brightener mainly relies on imports, and the price is relatively high
Second, because nitrocellulose is highly flammable and explosive, its danger depends on the degree of nitrification. Nitrocellulose with a nitrogen content above 12.5% ​​is extremely dangerous and will burn when exposed to fire.
Although nitrocellulose with a nitrogen content of less than 12.5% ​​is relatively stable, when heated or stored for a long time, it will gradually decompose and release acid, lowering the ignition point, and may spontaneously ignite and explode
In the third aspect, alkyd resin is used as a plasticizer for NC. Since there is no more cross-linked network blend, there is migration phenomenon. Over time, it will cause the surface of the leather to become sticky.
In the fourth aspect, in the compounding of nitrocellulose leather brightener, ethanol and low molecular weight esters are used as diluents, the stability of nitrocellulose emulsion is not very good, and there are partial demulsification and demulsification
Fifth aspect, the production conditions of nitrocellulose brightener are problematic, the speed of reaction is not as expected, the stability of nitrocellulose brightener emulsion still has some defects, and the phenomenon of yellowing and delamination appears in the part that has been placed for a long time, all of which affect the use effect

Method used

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  • A kind of environmental protection type nitrocellulose leather brightener and preparation method thereof
  • A kind of environmental protection type nitrocellulose leather brightener and preparation method thereof
  • A kind of environmental protection type nitrocellulose leather brightener and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Environmentally friendly nitrocellulose leather brightener, comprising the following components in parts by weight, 15 parts of nitrocellulose, 9 parts of alkyd resin, 7 parts of melamine formaldehyde resin, 22 parts of cyclohexanone, 10 parts of butyl acetate, ethyl acetate 14 parts, ethanol 3 parts, dibutyl phthalate 8 parts, butanol 10 parts, castor oil 2 parts.

[0023] The preparation method of environment-friendly type nitrocellulose leather brightener comprises the following steps, a, oil phase preparation: drop into the organic solvent of formula quantity in dissolving kettle, the mixture of cyclohexanone, butyl acetate, ethyl acetate and ethanol, stir, Make the organic solvent mix evenly, then drop into the nitrocellulose of formula quantity under stirring condition, continue to stir, then drop into the melamine formaldehyde resin of formula quantity, then drop into the butylene phthalate that plays plasticizer effect of formula quantity, stir Evenly for subseq...

Embodiment 2

[0025] Environmentally friendly nitrocellulose leather brightener, comprising the following components in parts by weight, 15 parts of nitrocellulose, 9 parts of alkyd resin, 7 parts of melamine formaldehyde resin, 22 parts of cyclohexanone, 10 parts of butyl acetate, ethyl acetate 14 parts, ethanol 5 parts, dibutyl phthalate 8 parts, butanol 10 parts.

[0026] The preparation method of environment-friendly type nitrocellulose leather brightener comprises the following steps, a, oil phase preparation: drop into the organic solvent of formula quantity in dissolving kettle, the mixture of cyclohexanone, butyl acetate, ethyl acetate and ethanol, stir, Make the organic solvent mix evenly, then drop into the nitrocellulose of formula quantity under stirring condition, continue to stir, then drop into the melamine formaldehyde resin of formula quantity, then drop into the butylene phthalate that plays plasticizer effect of formula quantity, stir After uniformity, it is ready for use...

Embodiment 3

[0028] Environmentally friendly nitrocellulose leather brightener, comprising the following components in parts by weight, 15 parts of nitrocellulose, 17 parts of alkyd resin, 7 parts of melamine formaldehyde resin, 22 parts of cyclohexanone, 10 parts of butyl acetate, ethyl acetate 14 parts, ethanol 3 parts, butanol 10 parts, castor oil 2 parts.

[0029]The preparation method of environment-friendly type nitrocellulose leather brightener comprises the following steps, a, oil phase preparation: drop into the organic solvent of formula quantity in dissolving kettle, the mixture of cyclohexanone, butyl acetate, ethyl acetate and ethanol, stir, Mix the organic solvent evenly, then put in the formula amount of nitrocellulose under the condition of stirring, continue to stir, then put in the formula amount of melamine formaldehyde resin, stir well and set aside; b. Water phase preparation: take another reactor and add The butanol, castor oil and alkyd resin that play auxiliary agen...

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Abstract

The invention relates to the field of leather care, in particular to an environment-friendly nitrocotton leather brightener and a preparation method thereof. The environment-friendly nitrocotton leather brightener of the present invention comprises the following components in parts by weight: 10 to 30 parts of nitrocellulose , 5-20 parts of alkyd resin, 2-20 parts of melamine formaldehyde resin, 35-65 parts of organic solvent, 6-12 parts of plasticizer, 5-30 parts of auxiliary agent, 1-10 parts of castor oil. The nitrocotton leather brightener of the invention is energy-saving, environment-friendly, low in price, good in heat resistance, good in use effect and beneficial to prolonging the service life of leather.

Description

technical field [0001] The invention relates to the field of leather care, in particular to an environment-friendly nitrocotton leather brightener and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, leather products have entered thousands of households due to their excellent performance, including sofas, leather clothes, leather shoes, leather bags and so on. During the use of leather, due to various physical and chemical reasons, leather products will lose luster and other problems, so regular care is required, such as cleaning, maintenance, glazing, polishing, and color replenishment, so as to restore leather products original appearance, while extending its service life. [0003] Generally, leather care is carried out by spraying leather brightener. Leather brightener can make the top layer of leather coating or the smooth surface of fur and leather dual-purpose, make the leather body soft, plump and elastic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09G1/16
CPCC09G1/16
Inventor 徐勇军王勇谭炜恒
Owner DONGGUAN UNIV OF TECH
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