CN110128906B - Water-based color-changeable wax for leather - Google Patents
Water-based color-changeable wax for leather Download PDFInfo
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- CN110128906B CN110128906B CN201910278223.7A CN201910278223A CN110128906B CN 110128906 B CN110128906 B CN 110128906B CN 201910278223 A CN201910278223 A CN 201910278223A CN 110128906 B CN110128906 B CN 110128906B
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- maleic anhydride
- wax
- polyethylene wax
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/06—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a water-based color-changing wax for leather, which comprises the following components in parts by weight: modified polyethylene wax emulsion grafted with maleic anhydride: 50-100 parts of silicone oil: 25-50 parts of glycerol 1, 3-diglycerol alkyd diacrylate: 10-30 parts of 2-hydroxy-4-methylthio butyrate calcium salt: 2-8 parts of 2- (trimethylsiloxy) pentafluoropropene: 5-10 parts. In the invention, the modified polyethylene wax grafted with maleic anhydride is adopted to replace paraffin, polyethylene wax and other materials in the traditional discoloring wax, the maleic anhydride has high activity and can be grafted on the polyethylene wax, in the process of preparing the modified polyethylene wax grafted with maleic anhydride, benzoyl peroxide is used as an initiator, styrene is used as a solvent to synthesize the modified polyethylene wax with grafted maleic anhydride, and then self-emulsification is carried out under an alkaline condition without adding an emulsifier in the emulsification process, so that the stability of the whole modified polyethylene wax is higher.
Description
Technical Field
The invention relates to a leather product, in particular to a waterborne color-changing wax for leather.
Background
The water-based color-changeable wax emulsion is sprayed or rolled on the surface of leather, the finished leather has color changes with different depths under the action of external tension (stretching, top stretching, bending and folding), and the color of the leather surface is naturally recovered after the external tension is eliminated.
In the prior art, most of the water-based color-changing waxes need to be emulsified by adding an emulsifier, and the stability is poor.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a self-emulsifying high-temperature water-based color-changing wax for leather.
In order to achieve the purpose, the invention provides the following technical scheme:
a water-based color-changeable wax for leather,
comprises the following components in parts by weight:
modified polyethylene wax emulsion grafted with maleic anhydride: 50 to 100 parts of
Silicone oil: 25 to 50 parts of
Glycerol 1, 3-diglycerol acid diacrylate: 10 to 30 portions of
2-hydroxy-4-methylthio butyric acid calcium salt: 2 to 8 portions of
2- (trimethylsiloxy) pentafluoropropene: 5-10 parts.
As a further improvement of the invention:
the modified polyethylene wax emulsion grafted with maleic anhydride is prepared by the following method:
melting polyethylene wax and maleic anhydride, adding benzoyl peroxide, heating to 120-150 ℃ for reaction to obtain modified polyethylene wax grafted with maleic anhydride, and adding 30% sodium hydroxide solution for reaction to obtain modified polyethylene wax emulsion grafted with maleic anhydride.
As a further improvement of the invention:
the mass ratio of the polyethylene wax to the maleic anhydride is 10: 90.
as a further improvement of the invention:
the benzoyl peroxide is a styrene solution of benzoyl peroxide.
As a further improvement of the invention:
the mass ratio of the benzoyl peroxide to the styrene in the benzoyl peroxide styrene solution is 3: 100. As a further improvement of the invention:
the mass ratio of the benzoyl peroxide styrene solution to the maleic anhydride is 1: 1.
As a further improvement of the invention:
the reaction time is 2-3 hours after the temperature is raised to 120-140 ℃.
As a further improvement of the invention:
the sodium hydroxide solution is used to: the molar ratio of sodium hydroxide to maleic anhydride was 1: 1.
As a further improvement of the invention:
adding sodium hydroxide, and reacting at 130 deg.C for 30 min.
As a further improvement of the invention:
the silicone oil is hydroxyl silicone oil.
In the invention, the modified polyethylene wax grafted with maleic anhydride is adopted to replace paraffin, polyethylene wax and other materials in the traditional discoloring wax, the maleic anhydride has higher activity and can be grafted on the polyethylene wax, in the process of preparing the modified polyethylene wax grafted with maleic anhydride, benzoyl peroxide is used as an initiator, styrene is used as a solvent to synthesize the modified polyethylene wax with the grafted maleic anhydride, then self-emulsification is carried out under an alkaline condition, an emulsifier is not required to be added in the emulsification process, so that the stability of the whole modified polyethylene wax is higher, in the using process of the traditional discoloring wax, the discoloring wax used in winter is required to be configured according to the specific conditions at that time, particularly the influence of temperature on the discoloring wax is often configured in winter, the discoloring wax is layered after being stored in summer and is invalid, otherwise, the discoloring wax configured in summer is layered in winter, the stability of the color-changing wax provided by the application is reflected in the aspect, layering can not occur at the temperature of-5-40 ℃, and the fact that the glycerol 1, 3-diglycerol alkyd diacrylate is added can accelerate the absorption of the whole color-changing wax by water-based leather is found, the stability of the whole color-changing wax is improved by adding the 2-hydroxy-4-methylthio butyrate calcium salt, the application range is further improved, the color-changing wax can be normally used even at the temperature of-25 ℃, the wear resistance of the whole color-changing wax is improved by adding the 2- (trimethylsiloxy) pentafluoropropene, and the wax cannot fall off due to simple rubbing.
Detailed Description
Example (b):
a water-based color-changeable wax for leather,
comprises the following components in parts by weight:
modified polyethylene wax emulsion grafted with maleic anhydride: 50 to 100 parts of
Silicone oil: 25 to 50 parts of
Glycerol 1, 3-diglycerol acid diacrylate: 10 to 30 portions of
2-hydroxy-4-methylthio butyric acid calcium salt: 2 to 8 portions of
2- (trimethylsiloxy) pentafluoropropene: 5-10 parts.
The modified polyethylene wax emulsion grafted with maleic anhydride is prepared by the following method:
melting polyethylene wax and maleic anhydride, adding benzoyl peroxide, heating to 120-150 ℃ for reaction to obtain modified polyethylene wax grafted with maleic anhydride, and adding 30% sodium hydroxide solution for reaction to obtain modified polyethylene wax emulsion grafted with maleic anhydride.
The mass ratio of the polyethylene wax to the maleic anhydride is 10: 90.
The benzoyl peroxide is a styrene solution of benzoyl peroxide.
The mass ratio of the benzoyl peroxide to the styrene in the benzoyl peroxide styrene solution is 3: 100.
The mass ratio of the benzoyl peroxide styrene solution to the maleic anhydride is 1: 1.
The reaction time is 2-3 hours after the temperature is raised to 120-140 ℃.
The sodium hydroxide solution is used to: the molar ratio of sodium hydroxide to maleic anhydride was 1: 1.
Adding sodium hydroxide, and reacting at 130 deg.C for 30 min.
The silicone oil is hydroxyl silicone oil.
Comparative example one:
the color-changing wax is prepared according to the method disclosed in the Chinese invention patent with the patent number of 93119229.3.
Comparative example two:
a water-based color-changeable wax for leather,
comprises the following components in parts by weight:
modified polyethylene wax emulsion grafted with maleic anhydride: 50 to 100 parts of
Silicone oil: 25 to 50 parts of
The modified polyethylene wax emulsion grafted with maleic anhydride is prepared by the following method:
melting polyethylene wax and maleic anhydride, adding benzoyl peroxide, heating to 120-150 ℃ for reaction to obtain modified polyethylene wax grafted with maleic anhydride, and adding 30% sodium hydroxide solution for reaction to obtain modified polyethylene wax emulsion grafted with maleic anhydride.
The mass ratio of the polyethylene wax to the maleic anhydride is 10: 90.
The benzoyl peroxide is a styrene solution of benzoyl peroxide.
The mass ratio of the benzoyl peroxide to the styrene in the benzoyl peroxide styrene solution is 3: 100. The mass ratio of the benzoyl peroxide styrene solution to the maleic anhydride is 1: 1.
The reaction time is 2-3 hours after the temperature is raised to 120-140 ℃.
The sodium hydroxide solution is used to: the molar ratio of sodium hydroxide to maleic anhydride was 1: 1.
Adding sodium hydroxide, and reacting at 130 deg.C for 30 min.
The silicone oil is hydroxyl silicone oil.
The polyurethane leather was coated with the color-changing waxes of examples and comparative examples, and after standing for 24 hours, the test was performed:
1. emulsion stability, the centrifugal stability and storage stability of which are measured mainly.
The centrifugal stability adopts a GB-11543-89 method, and the separation can not be realized by centrifuging at 3000r/min for half an hour. (good, general, bad according to the grade)
The storage stability is observed by a sealed storage method after being stored for 30 days, and the emulsion is required to be good in state, free of particles, floating oil and precipitate and layering.
2. The spraying application effect is that the prepared water-based color-changing wax emulsion is sprayed on a brown leather sample block by a manual spray gun, dried and then pressed for 3min by an embossing machine at 120 ℃, and then taken out to stretch, bend and rub the leather, and the color-changing effect is checked. (good, general, bad according to the grade)
3. The leather surface was rubbed horizontally 30 times by a toothbrush and then tested in gap 2.
4. Tests were performed at-10, -5, 20, 35 ℃ for 1, 2, 3, respectively.
In the invention, the modified polyethylene wax grafted with maleic anhydride is adopted to replace paraffin, polyethylene wax and other materials in the traditional discoloring wax, the maleic anhydride has higher activity and can be grafted on the polyethylene wax, in the process of preparing the modified polyethylene wax grafted with maleic anhydride, benzoyl peroxide is used as an initiator, styrene is used as a solvent to synthesize the modified polyethylene wax with the grafted maleic anhydride, then self-emulsification is carried out under an alkaline condition, an emulsifier is not required to be added in the emulsification process, so that the stability of the whole modified polyethylene wax is higher, in the using process of the traditional discoloring wax, the discoloring wax used in winter is required to be configured according to the specific conditions at that time, particularly the influence of temperature on the discoloring wax is often configured in winter, the discoloring wax is layered after being stored in summer and is invalid, otherwise, the discoloring wax configured in summer is layered in winter, the stability of the color-changing wax provided by the application is reflected in the aspect, layering can not occur at the temperature of-5-40 ℃, and the fact that the glycerol 1, 3-diglycerol alkyd diacrylate is added can accelerate the absorption of the whole color-changing wax by water-based leather is found, the stability of the whole color-changing wax is improved by adding the 2-hydroxy-4-methylthio butyrate calcium salt, the application range is further improved, the color-changing wax can be normally used even at the temperature of-25 ℃, the wear resistance of the whole color-changing wax is improved by adding the 2- (trimethylsiloxy) pentafluoropropene, and the wax cannot fall off due to simple rubbing.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. An aqueous color-changeable wax for leather, which is characterized in that:
comprises the following components in parts by weight:
modified polyethylene wax emulsion grafted with maleic anhydride: 50 to 100 parts of
Silicone oil: 25 to 50 parts of
Glycerol 1, 3-diglycerol acid diacrylate: 10 to 30 portions of
2-hydroxy-4-methylthio butyric acid calcium salt: 2 to 8 portions of
2- (trimethylsiloxy) pentafluoropropene: 5-10 parts;
the modified polyethylene wax emulsion grafted with maleic anhydride is prepared by the following method:
melting polyethylene wax and maleic anhydride, adding benzoyl peroxide, heating to 120-150 ℃ for reaction to obtain modified polyethylene wax grafted with maleic anhydride, and adding 30% sodium hydroxide solution for reaction to obtain modified polyethylene wax emulsion grafted with maleic anhydride;
the mass ratio of the polyethylene wax to the maleic anhydride is 10: 90;
the benzoyl peroxide is a styrene solution of benzoyl peroxide;
the mass ratio of the benzoyl peroxide to the styrene in the benzoyl peroxide styrene solution is 3: 100;
the mass ratio of the benzoyl peroxide styrene solution to the maleic anhydride is 1: 1.
2. The aqueous leather color changeable wax of claim 1, wherein:
the reaction time is 2-3 hours after the temperature is raised to 120-140 ℃.
3. The aqueous color changeable wax for leather of claim 2, wherein:
the dosage of the sodium hydroxide solution is as follows: the molar ratio of sodium hydroxide to maleic anhydride was 1: 1.
4. The aqueous leather color changeable wax of claim 3, wherein:
adding sodium hydroxide, and reacting at 130 deg.C for 30 min.
5. The aqueous leather color changeable wax of claim 1, wherein:
the silicone oil is hydroxyl silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910278223.7A CN110128906B (en) | 2019-04-08 | 2019-04-08 | Water-based color-changeable wax for leather |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910278223.7A CN110128906B (en) | 2019-04-08 | 2019-04-08 | Water-based color-changeable wax for leather |
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| Publication Number | Publication Date |
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| CN110128906A CN110128906A (en) | 2019-08-16 |
| CN110128906B true CN110128906B (en) | 2020-11-24 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6673053B2 (en) * | 1999-05-07 | 2004-01-06 | Scimed Life Systems, Inc. | Hydrophilic lubricity coating for medical devices comprising an antiblock agent |
| ES2710856T3 (en) * | 2010-09-13 | 2019-04-29 | Chemetall Gmbh | Procedure for coating surfaces and use of coated objects according to this procedure |
| CN102020776A (en) * | 2010-11-22 | 2011-04-20 | 陕西科技大学 | Method for preparing wax emulsion by modification on branched polyethylene wax |
| MX2016013504A (en) * | 2014-04-15 | 2017-01-16 | Honeywell Int Inc | High performance water-based adhesion compositions and applications. |
| CN104452328A (en) * | 2014-11-06 | 2015-03-25 | 芜湖市祥荣食品有限公司 | Jasmine fragrant synthetic leather and production method thereof |
| CN106928846A (en) * | 2017-03-20 | 2017-07-07 | 南平博士达节能科技有限公司 | It is a kind of to peel off auxiliary agent suitable for the aqueous high of synthetic leather |
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