CN108341918A - A kind of leather finishing agent and its preparation and application - Google Patents
A kind of leather finishing agent and its preparation and application Download PDFInfo
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- CN108341918A CN108341918A CN201810167876.3A CN201810167876A CN108341918A CN 108341918 A CN108341918 A CN 108341918A CN 201810167876 A CN201810167876 A CN 201810167876A CN 108341918 A CN108341918 A CN 108341918A
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- Prior art keywords
- finishing agent
- antioxidant
- buckling
- leather
- powder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- C14C11/006—Surface finishing of leather using macromolecular compounds using polymeric products of isocyanates (or isothiocyanates) with compounds having active hydrogen
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The present invention discloses a kind of leather finishing agent and its preparation and application, the finishing agent are grouped as by the group of following weight percent：Diisocyanate 15%~25%, polyalcohol 30%~40%, small molecule dihydric alcohol 2~4%, organic solvent 35%~45%, buckling powder 1~5%, terminator 0.3~1.0%, antioxidant 0.15, silicone oil 0.20%.After the finishing agent is coated on Base leathers, 3~8min being toasted at 110 DEG C~140 DEG C, is soaked later, water rubs 20~45min of processing and secondary drying, and hot-pressing processing is carried out after drying.Buckling powder is heated, is carbonized blackening and develops the color, the part after hot pressing, the carbonization blackening of buckling powder, the place of hot stamping is not exactly not develop the color, under comparing in this way, obtained word and pattern is very clear, has very big application prospect in the pattern production field of luggage, clothes and footwear material.
Description
Technical field
The invention belongs to leather agent field, more particularly to a kind of leather finishing agent and its preparation and application.
Background technology
Leather finishing agent is coated in the surface of corium, PU leather and PVC leather, and uniform protective film is formed on the surface of leather, has
There is Bearable dry and wet wipe to wipe, resistance to tortuous and certain water proofing property, the advantages that maintenance easy to clean.Currently, leather finishing agent mainly has nitrification
Fiber system, acrylic resin systems and polyurethane system etc., wherein based on the finishing agent of polyurethane system.In PU resins
In, add different auxiliary agents and color chips toner, in conjunction with suitable aftertreatment technology, manufactured leather have different appearance decorative patterns and
Feel can be produced into the luggage and footwear material of different Trend of fashion, substantially increase the economic value of leather.
Finishing agent for high temperature hot pressing carbonization colour developing shows special word and pattern, fits after hot pressing post-processes
Together in the trade mark and LOGO of production commodity, it is widely used in luggage, clothes and footwear material general.Such finishing agent constituent master
If polyurethane, solvent, auxiliary agent.The small-molecular-weight polyethylene wax substance of low melting point is added in traditional buckling finishing agent,
After mold heating, it is imprinted on leather, so that the wax additives of low melting point is diffused on polyurethane surface come in this way, hot by high temperature
A degree of deformation and color burn occur for the leather surface after pressure, show corresponding figure and word.But this figure
Shape and word are only a profile, it is necessary to carefully identification.
Invention content
The present invention is directed to shortcoming and defect existing in the prior art, provides a kind of leather finishing agent and its preparation and use
Method.Using the leather after finishing agent of the present invention, the part after hot pressing, buckling powder be carbonized blackening, not the place of hot stamping be exactly
It does not develop the color, under comparing in this way, obtained word and pattern is very clear.
The present invention is achieved through the following technical solutions：
A kind of leather finishing agent, the finishing agent are grouped as by the group of following weight percent：Diisocyanate 15%~
25%, polyalcohol 30%~40%, small molecule dihydric alcohol 2~4%, organic solvent 35%~45%, buckling powder 1~5% terminate
Agent 0.3~1.0%, antioxidant 0.15, silicone oil 0.20%.
Preferably, the diisocyanate is one kind in toluene di-isocyanate(TDI), methyl diphenylene diisocyanate
Or two kinds.
Preferably, the organic solvent is one kind in dimethylformamide, toluene, butyl acetate, butanone, dimethylbenzene
Or it is two or more.
Preferably, the small molecule dihydric alcohol is one or both of ethylene glycol, butanediol.
Preferably, the polyalcohol is polyether polyol, the polyester polyol of number-average molecular weight 1000,2000 or 3000
One or both of.
Preferably, the buckling powder is one kind in grain size 1~3 μm of pentaerythrite, dipentaerythritol and tripentaerythritol.
Preferably, the terminator is one or more of n-butanol, isobutanol, isopropanol.
Preferably, the antioxidant is antioxidant 1010, antioxidant 1076, antioxidant 1098, irgasfos 168, antioxygen
One or more of agent DBPE, antioxidant BHT.
The preparation method of the finishing agent, comprises the steps of：
(1) diisocyanate, polyalcohol, antioxidant and organic solvent are put into reaction kettle and is heated to 70 DEG C~90
DEG C, it is reacted 4~7 hours under 250~450rpm of low whipping speed；In reaction process, the dimethyl methyl of small molecule dihydric alcohol is added
Amide solution is eventually adding terminator and terminates reaction, keeps temperature-resistant, continues stirring 30 minutes, stops heating；
(2) buckling powder is added in reaction kettle, adds silicone oil and antioxidant, is stirred for 30 minutes, temperature is reduced to often
It discharges after temperature.
The application method of the finishing agent：Finishing agent be coated in Base leathers on after, at 110 DEG C~140 DEG C toast 3~
8min soaks later, and water rubs 20~45min of processing and secondary drying, and hot-pressing processing is carried out after drying.
Finishing agent coating drying obtains PU leather, the groups such as pentaerythrite, dipentaerythritol or tripentaerythritol in finishing agent
The micro mist divided, is dispersed in the PU films of leather, film layer at this moment is transparent；PU leather immersions, are dehydrated after water is rubbed and dry
It is dry.In immersion and water are rubbed, pentaerythrite is separated with PU films, and PU films become opaque.If in finishing agent, addition
The color chips of display different colours, depth variation can be occurred by crossing the color of water leather.After the PU leather dewatered dryings rubbed through water, use
160~320 DEG C of die material hot pressing, hot pressing time are 5~30S；Buckling powder is heated, is carbonized blackening and develops the color, after hot pressing
Part, the carbonization blackening of buckling powder, the place of hot stamping is not exactly not develop the color, and under comparing in this way, obtained pattern and word is non-
It is often clear.
The present invention compared with prior art, there is advantageous effect below：
(1) pentaerythrite, dipentaerythritol and tripentaerythritol are introduced in the formula of finishing agent as buckling powder, pressure
It is heated to become powder, is carbonized blackening and develops the color, the part after hot pressing, buckling powder is carbonized blackening, and the place of hot stamping is not exactly without showing
Color, compared with prior art, obtained pattern and character are more clear.
(2) preparation process is simple and easy to operate, has very big application prospect in the pattern production field of luggage, clothes and footwear material.
Specific implementation mode
Below in conjunction with specific embodiment, the invention will be further described, but scope of the present invention is not
It is confined to the involved range of embodiment.
Embodiment 1
Each raw material component is weighed according to following weight proportioning：Toluene di-isocyanate(TDI) 11.50%, number-average molecular weight Mn are
1000 polyether polyol 35.00%, ethylene glycol 3%, dimethylformamide 14.75%, butanone 15%, dimethylbenzene 17.00%, just
The pentaerythrite 3.0% of butanol 0.25%, 0.20%, 1 μm of BHT antioxidants 0.30%, silicone oil grain size.
It is as follows：
By toluene di-isocyanate(TDI), polyether polyol, antioxidant and organic solvent (dimethylformamide, butanone and two
Toluene mixture) it puts into reaction kettle and is heated to 75 DEG C or so, stir about 4 hours；In reaction process, the two of ethylene glycol are added
Methylformamide solution carrys out the viscosity of control system, is eventually adding n-butanol, terminates reaction.Continue stirring 30 minutes, by season penta
Tetrol is added in reaction kettle, and addition silicone oil is stirred for half an hour, and temperature discharges after being reduced to room temperature.
By above-mentioned gained leather finishing agent, after being coated on Base leathers, at 120 DEG C, baking 5min removing solvents dry
It is dry to obtain PU leather；Leather soaking after drying, water rub processing 30min, secondary drying；Leather after secondary drying, with 280 DEG C
Mould heat pressure 15 seconds, the carbonization blackening of buckling powder, develop the color corresponding pattern and word.
Embodiment 2
A kind of preparation of high temperature hot pressing carbonization colour developing leather finishing agent, each raw material component is weighed according to following weight proportioning：
Toluene di-isocyanate(TDI) 11.50%, number-average molecular weight Mn are 1000 polyether polyol 35.00%, ethylene glycol 4%, dimethyl methyl
Amide 20.00%, butanone 10%, dimethylbenzene 12.75%, isobutanol 0.25%, BHT antioxidants 0.30%, silicone oil 0.20%,
The pentaerythrite 6.0% of 1 μm of grain size.
The production technology of high temperature hot pressing carbonization colour developing leather finishing agent, is as follows：
By toluene di-isocyanate(TDI), polyether polyol, antioxidant and organic solvent (dimethylformamide, butanone and two
Toluene mixture) it puts into reaction kettle and is heated to 75 DEG C or so, in reaction process, the two of ethylene glycol are added in stir about 4 hours
Methylformamide solution carrys out the viscosity of control system, is eventually adding isobutanol, terminates reaction.Continue stirring 30 minutes, by season penta
Tetrol is added in reaction kettle, and addition silicone oil is stirred for half an hour, and temperature discharges after being reduced to room temperature.
By above-mentioned gained leather finishing agent, after being coated on Base leathers, at 120 DEG C, baking 5min removing solvents dry
It is dry.Finishing agent coating drying obtains PU leather；Leather soaking after drying, water, which is rubbed, handles 30min, secondary drying, after secondary drying
Leather, with 250 DEG C of mould heat pressure 20 seconds, buckling powder is carbonized blackening, and develop the color corresponding pattern and word.
Embodiment 3
A kind of preparation of high temperature hot pressing carbonization colour developing leather finishing agent, each raw material component is weighed according to following weight proportioning：
Toluene di-isocyanate(TDI) 11.50%, number-average molecular weight Mn are 1000 polyether polyol 35.00%, ethylene glycol 3%, dimethyl methyl
Amide 30.75%, butanone 10%, dimethylbenzene 5.00%, n-butanol 0.25%, BHT antioxidants 0.30%, silicone oil 0.20%, 2
The pentaerythrite 4.0% of μm grain size.
The production technology of high temperature hot pressing carbonization colour developing leather finishing agent, is as follows：
By toluene di-isocyanate(TDI), polyether polyol, antioxidant and organic solvent (dimethylformamide, butanone and two
Toluene mixture) it puts into reaction kettle and is heated to 75 DEG C or so, in reaction process, the two of ethylene glycol are added in stir about 4 hours
Methylformamide solution carrys out the viscosity of control system, is eventually adding n-butanol, terminates reaction.Continue stirring 30 minutes, by season penta
Tetrol is added in reaction kettle, and addition silicone oil is stirred for half an hour, and temperature discharges after being reduced to room temperature.
By above-mentioned gained leather finishing agent, after being coated on Base leathers, at 120 DEG C, baking 5min removing solvents dry
It is dry.Finishing agent coating drying obtains PU leather；Leather soaking after drying, water, which is rubbed, handles 20min, secondary drying, after secondary drying
Leather, with 210 DEG C of mould heat pressure 30 seconds, buckling powder is carbonized blackening, and develop the color corresponding pattern and word.
Embodiment 4
A kind of preparation of high temperature hot pressing carbonization colour developing leather finishing agent, each raw material component is weighed according to following weight proportioning：
Methyl diphenylene diisocyanate 10.50%, number-average molecular weight Mn are 2000 polyester polyol 30.00%, number-average molecular weight Mn
For 3000 polyester polyol 6.00%, butanediol 4.00%, dimethylformamide 29.75%, butanone 4.00%, dimethylbenzene
10.00%, the pentaerythrite 5.0% of n-butanol 0.25%, 0.25%, 2 μm of BHT antioxidants 0.25%, silicone oil grain size.
The production technology of high temperature hot pressing carbonization colour developing leather finishing agent, is as follows：
By methyl diphenylene diisocyanate, polyester polyol, antioxidant and organic solvent (dimethylformamide, fourth
Ketone and xylene mixture) it puts into reaction kettle and is heated to 75 DEG C or so, in reaction process, fourth two is added in stir about 4 hours
The dimethyl formamide solution of alcohol carrys out the viscosity of control system, is eventually adding n-butanol, terminates reaction.Continue stirring 30 minutes,
Pentaerythrite is added in reaction kettle, addition silicone oil is stirred for half an hour, and temperature discharges after being reduced to room temperature.
By above-mentioned gained leather finishing agent, after being coated on Base leathers, at 120 DEG C, baking 5min removing solvents dry
It is dry to obtain PU leather；Leather soaking after drying, water rub processing 20min, secondary drying.Leather after secondary drying, with 230 DEG C
Mould heat pressure 20 seconds, the carbonization blackening of buckling powder, develop the color corresponding pattern and word.
Embodiment 5
A kind of preparation of high temperature hot pressing carbonization colour developing leather finishing agent, each raw material component is weighed according to following weight proportioning：
Methyl diphenylene diisocyanate 10.50%, number-average molecular weight Mn are 2000 polyester polyol 25.00%, number-average molecular weight Mn
For 3000 polyester polyol 12.00%, butanediol 3.00%, dimethylformamide 19.75%, butanone 15.00%, dimethylbenzene
10.00%, the pentaerythrite 4.0% of isobutanol 0.25%, 0.25%, 1 μm of BHT antioxidants 0.25%, silicone oil grain size.
The production technology of high temperature hot pressing carbonization colour developing leather finishing agent, is as follows：
By methyl diphenylene diisocyanate, polyester polyol, antioxidant and organic solvent (dimethylformamide, fourth
Ketone and xylene mixture) it puts into reaction kettle and is heated to 75 DEG C or so, in reaction process, fourth two is added in stir about 4 hours
The dimethyl formamide solution of alcohol carrys out the viscosity of control system, is eventually adding isobutanol, terminates reaction.Continue stirring 30 minutes,
Pentaerythrite is added in reaction kettle, addition silicone oil is stirred for half an hour, and temperature discharges after being reduced to room temperature.
By above-mentioned gained leather finishing agent, after being coated on Base leathers, at 120 DEG C, baking 5min removing solvents dry
It is dry to obtain PU leather；Leather soaking after drying, water rub processing 30min, secondary drying.Leather after secondary drying, with 270 DEG C
Mould heat pressure 10 seconds, the carbonization blackening of buckling powder, develop the color corresponding pattern and word.
Embodiment 6
A kind of preparation of high temperature hot pressing carbonization colour developing leather finishing agent, each raw material component is weighed according to following weight proportioning：
Methyl diphenylene diisocyanate 12.50%, number-average molecular weight Mn are 2000 polyester polyol 30.00%, number-average molecular weight Mn
For 1000 polyester polyol 5.50%, butanediol 2.00%, dimethylformamide 24.75%, butanone 14.50%, dimethylbenzene
5.00%, the pentaerythrite 5.0% of n-butanol 0.25%, 0.25%, 2 μm of BHT antioxidants 0.25%, silicone oil grain size.
The production technology of high temperature hot pressing carbonization colour developing leather finishing agent, is as follows：
By methyl diphenylene diisocyanate, polyester polyol, antioxidant and organic solvent (dimethylformamide, fourth
Ketone and xylene mixture) it puts into reaction kettle and is heated to 75 DEG C or so, in reaction process, fourth two is added in stir about 4 hours
The dimethyl formamide solution of alcohol carrys out the viscosity of control system, is eventually adding n-butanol, terminates reaction.Continue stirring 30 minutes,
Pentaerythrite is added in reaction kettle, addition silicone oil is stirred for half an hour, and temperature discharges after being reduced to room temperature.
By above-mentioned gained leather finishing agent, after being coated on Base leathers, at 120 DEG C, baking 5min removing solvents dry
It is dry to obtain PU leather；Leather soaking after drying, water, which is rubbed, handles 30min, secondary drying, the leather after secondary drying, with 230 DEG C
Mould heat pressure 25 seconds, the carbonization blackening of buckling powder, develop the color corresponding pattern and word.
Claims (10)
1. a kind of leather finishing agent, which is characterized in that the finishing agent is grouped as by the group of following weight percent：Diisocyanate
Ester 15%~25%, polyalcohol 30%~40%, small molecule dihydric alcohol 2~4%, organic solvent 35%~45%, buckling powder 1~
5%, terminator 0.3~1.0%, antioxidant 0.15, silicone oil 0.20%.
2. finishing agent according to claim 1, which is characterized in that the diisocyanate be toluene di-isocyanate(TDI),
One or both of methyl diphenylene diisocyanate.
3. finishing agent according to claim 2, which is characterized in that the organic solvent be dimethylformamide, toluene,
One or more of butyl acetate, butanone, dimethylbenzene.
4. finishing agent according to claim 3, which is characterized in that the small molecule dihydric alcohol is in ethylene glycol, butanediol
One or two.
5. according to Claims 1 to 4 any one of them finishing agent, which is characterized in that the polyalcohol is number-average molecular weight
1000, one or both of 2000 or 3000 polyether polyol, polyester polyol.
6. according to Claims 1 to 4 any one of them finishing agent, which is characterized in that the buckling powder is 1~3 μm of season of grain size
One kind in penta tetrol, dipentaerythritol and tripentaerythritol.
7. finishing agent according to claim 6, which is characterized in that the terminator is in n-butanol, isobutanol, isopropanol
One or more.
8. finishing agent according to claim 7, which is characterized in that the antioxidant is antioxidant 1010, antioxidant
1076, one or more of antioxidant 1098, irgasfos 168, antioxidant DBPE, antioxidant BHT.
9. the preparation method of any one of claim 1~8 finishing agent, which is characterized in that comprise the steps of：
(1) diisocyanate, polyalcohol, antioxidant and organic solvent are put into reaction kettle and is heated to 70 DEG C~90 DEG C,
It is reacted 4~7 hours under 250~450rpm of mixing speed；In reaction process, the dimethylformamide that small molecule dihydric alcohol is added is molten
Liquid is eventually adding terminator and terminates reaction, keeps temperature-resistant, continues stirring 30 minutes, stops heating；
(2) buckling powder is added in reaction kettle, adds silicone oil and antioxidant, is stirred for 30 minutes, after temperature is reduced to room temperature
Discharging.
10. the application method of any one of claim 1~8 finishing agent, it is characterised in that：Finishing agent is coated in Base leathers
After upper, 3~8min being toasted at 110 DEG C~140 DEG C, is soaked later, water rubs 20~45min of processing and secondary drying, after drying
Carry out hot-pressing processing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167876.3A CN108341918A (en) | 2018-02-28 | 2018-02-28 | A kind of leather finishing agent and its preparation and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167876.3A CN108341918A (en) | 2018-02-28 | 2018-02-28 | A kind of leather finishing agent and its preparation and application |
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| CN108341918A true CN108341918A (en) | 2018-07-31 |
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| CN204875329U (en) * | 2015-08-20 | 2015-12-16 | 福建华普化学有限公司 | Dry process is scalded and is pressed polyurethane synthetic leather that discolours |
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2018
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| CN102898609A (en) * | 2012-08-29 | 2013-01-30 | 淮安凯悦科技开发有限公司 | Waxy-luster polyurethane resin used in synthetic leather surface treatment, and preparation method thereof |
| CN103772618A (en) * | 2013-12-31 | 2014-05-07 | 东莞市宏达聚氨酯有限公司 | Acrylate modified polyurethane resin for leather finish and preparation method thereof |
| CN104356342A (en) * | 2014-11-04 | 2015-02-18 | 佛山市功能高分子材料与精细化学品专业中心 | Organic silicon modified waterborne polyurethane leather coating agent and preparation method |
| CN204875329U (en) * | 2015-08-20 | 2015-12-16 | 福建华普化学有限公司 | Dry process is scalded and is pressed polyurethane synthetic leather that discolours |
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