CN104651549B - Leather restorative - Google Patents
Leather restorative Download PDFInfo
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- CN104651549B CN104651549B CN201510055076.9A CN201510055076A CN104651549B CN 104651549 B CN104651549 B CN 104651549B CN 201510055076 A CN201510055076 A CN 201510055076A CN 104651549 B CN104651549 B CN 104651549B
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- organosilicon
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Classifications
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
Field is cleaned the present invention relates to leather, there is provided a kind of brand-new leather restorative, the ethanol that the leather restorative is used by organosilicon, trihydroxylic alcohol, the alkane that carbon number is 20 50, as solvent is constituted, the leather restorative is between solution state, the molecular weight 2,000 8000 of the organosilicon.The present invention improves the permeability of organosilicon so that organosilicon can more efficiently play the hydrophobic effect of organosilicon from the relatively low organosilicon of molecular weight.
Description
Technical field
The present invention relates to leather restorative field, in particular it relates to the surface of international Patent classificating number C14C11/00 leathers
Ornamenting.
Background technology
Dry-cleaning industry experienced the blank phase of previous decades in China, to today in Chinese true development also with regard to the more than ten years
History, but comparatively go back imperfection, make a general survey of the dry-cleaning development history of All Around The World, it lived as the house of people one
Part, one section of marvellous road of having passed by, the operation of cassie Asia dry-cleaning for many years can be seen that dry-cleaning industry and be intended in the whole world especially
A dry-cleaning heat is showed in China.With greatly improving for Consumption of China level, requirement of each ages to dry-cleaning is also got over
Come higher, people have regarded dry-cleaning as a part for life.
Leather is during using or dry-cleaning cleaning, and the small molecule in leather is migrated, and surface is also because cleaning
Or using changing so that leather loses original texture, elasticity, pliability and brightness, leather can be hardened, become fragile,
Colour fading, aging, face checking, water resistant are less able.It is substantial amounts of due to having been used in laundry processes especially in dry cleaning processes
Small molecule in organic solvent, leather is more easy to migrate, so, the big skill for being restored to this area completely of Leather Properties
Art problem.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of brand-new leather restorative, the leather restorative
The ethanol used by organosilicon, trihydroxylic alcohol, carbon number for 20-50 alkane, as solvent is constituted, and the leather restorative is
Between solution state, the molecular weight 2000-8000 of the organosilicon.
In wherein some embodiments, the alkane that the carbon number is 20-50 is the straight chain alkane that carbon number is 20-50
Hydrocarbon.
In wherein some embodiments, the carbon number of the trihydroxylic alcohol is 1-8.
In wherein some embodiments, the consumption of the trihydroxylic alcohol is the 20%-80% of alcohol solvent quality.
In wherein some embodiments, the alkane and the mass ratio of trihydroxylic alcohol that the carbon number is 20-50 are 1：0.5-
3。
In wherein some embodiments, the mass ratio of the trihydroxylic alcohol and organosilicon is 1：1-5.
In wherein some embodiments, the organosilicon has side chain or end-blocking, and the side chain or end-blocking have anion
Group and/or cation group.
In wherein some embodiments, the organosilicon is carboxyl quaternary amine base modified organic silicon.
In wherein some embodiments, the organosilicon is side chain graft carboxyl quaternary amine organosilicon.
In wherein some embodiments, the leather restorative also includes bactericide, spices, preservative, antioxidant, anti-
One or more in electrostatic agent.
The above-mentioned of the application and other features, aspect and advantage is more readily understood with reference to described further below.
Embodiment
The participation in the election detailed description of the invention below for being preferable to carry out method and including embodiment this public affairs can be more easily understood
Open content.A large amount of terms can be referred in description below and claims, these terms are defined as following meanings.
Singulative includes plural number and object is discussed, unless the context clearly dictates otherwise.
" optionally " or " optionally " refer to that the item or event that describe thereafter may or may not occur, and this is retouched
State the situation that the situation occurred including event and event do not occur.
Approximate term in specification and claims is used for modifying quantity, represents that the present invention is not limited to this specific
Quantity, includes the part of the amendment of the acceptable change without cause related basic function close to the quantity.Phase
Answer, modify a numerical value with " about ", " about " etc., mean that the invention is not restricted to the exact numerical.In some examples, approximately
Term likely corresponds to the precision of the instrument of measured value.In present specification and claims, scope is limited can be with
Combine and/or exchange, these scopes include all subranges contained therebetween if not stated otherwise.
The ethanol group that leather restorative is used by organosilicon, trihydroxylic alcohol, carbon number for 20-50 alkane, as solvent
Into the leather restorative is solution state, and the molecular weight of the organosilicon is between 2000-8000.
The present invention improves the permeability of organosilicon from the relatively low organosilicon of molecular weight so that organosilicon can more added with
Effect ground plays the hydrophobic effect of organosilicon, because the high osmosis of organosilicon so that leather restorative of the invention obtains phase
For the same hydrophobic effect of high molecular organosilicon, this exceeds the expectation of those skilled in the art significantly.What the present invention was used
Organosilicon, unexpectedly obtains fabulous brightness, it may be possible to because the high volatile of ethanol, skin is acted in leather restorative
Leather surface is, in ethanol and the first fabulous permeability infiltration such as leather of other components, with the stopping of infiltration, the volatilization of ethanol
Property play a role, the volatilization of ethanol further promotes organosilicon in the arrangement of leather surface, so as to obtain fabulous brightness, can
See in terms of quality, ethanol there should be sizable accounting, and this is conducive to obtaining more preferable brightness.
As a kind of perferred technical scheme, the organosilicon of organosilicon preferred molecular weight of the invention in 3000-5000.
The leather restorative of the present invention passes through etoh solvent so that leather restorative is solution state, which greatly enhances
The penetrating power of leather restorative, further increases the surface hydrophobic of leather restorative, while also obtain fabulous light
Brightness.
The alkane that the carbon number is 20-50 is the linear paraffin that carbon number is 20-50.Present invention preferably employs carbon
Atomicity is 20-50 linear paraffin, and linear paraffin can more efficiently improve the brightness of leather surface.Preferably, institute
The mass ratio for stating alkane that carbon number is 20-50 and organosilicon is 1：0.5-3.
The carbon number of the trihydroxylic alcohol is 1-8.Trihydroxylic alcohol is infiltrated through among azelon, and this changes azelon
Overall structure, can further improve the arranged regular degree of organosilicon.The consumption of the trihydroxylic alcohol is the 20%- of alcohol solvent quality
80%.It is that, in order to preferably coordinate with alcohol solvent, experiment is found from trihydroxylic alcohol, the consumption of trihydroxylic alcohol is alcohol solvent quality
20%-80% advantageously in the infiltration of trihydroxylic alcohol.The proportional balancing method aggressivity and volatility of leather restorative.
The organosilicon has side chain or end-blocking, and the side chain or end-blocking have anionic group and/or cation group.
The present invention anionic group and cation group are introduced by band amino group with fabulous reactivity, it is necessary to
, it is noted that anionic group of the present invention refers to sulfonate groups, phosphate group, carboxylate groups, the sun from
Subbase group refers to quaternary amine salt groups.
Organosilicon with anionic group and/or cation group can be quaternary ammoniated with carboxyl by amino silicones
Compound, dicarboxylic acid compound, sulfo group carboxylic acid compound, phosphoric acid carboxylic acid compound, sulfo group quaternary ammonium compound, phosphate quaternary amine chemical combination
Thing is prepared from, and amino silicones can be side amino silicones or Amino End Group polysiloxanes.
The preparation method of side amino silicones：
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection.
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane, hexamethyl and siloxanes, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, are warming up to 80-85 degrees Celsius, stir and protect
Hold 2-3 hours, add N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, be warming up to 100 degrees Celsius, stir and keep
Certain time.After the completion of reaction, it is rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane.By controlling the content of N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, amino content is controlled, it is anti-by control
The time answered controls the molecular weight of side amino silicones.
The preparation method of Amino End Group polysiloxanes：
Appropriate water, 3- aminopropyltriethoxies diethoxy silane and dimethyldimethoxysil,ne or side are added in a reservoir
The mixed liquor of amino silicones, is reacted at room temperature 2 hours, is warming up to 80 degrees Celsius, decompression stirring reaction 4 hours obtains colourless
Transparent hydrolysate；
Hydrolysate, 3- aminopropyltriethoxies diethoxy silane and catalyst potassium hydroxide are sequentially added in a reservoir,
85 degrees Celsius of reaction certain times, vacuum distillation obtains Amino End Group polysiloxanes.
Polysiloxanes with anion/cation group：
Amino silicones are dissolved in acetone, carboxyl quaternary ammonium compound, dicarboxylic acid compound, sulphur are added dropwise under ice bath
Carboxylic acid compound, phosphoric acid carboxylic acid compound, sulfo group quaternary ammonium compound, phosphate quaternary ammonium compound, after the completion of reaction, pressurization is de-
Except low-boiling compound, the polysiloxanes with anionic group and/or cation group is obtained.
Dicarboxylic acid compound, sulfo group carboxylic acid compound, phosphoric acid carboxylic acid compound are commercially available prod, the dicarboxyl that can be selected
Acid compound refers to the compound with 2 carboxylic groups, alkane, sulfo group carboxylic acid compound preferably with 2 carboxylic groups
Refer to the compound with 1 carboxylic group and 1 sulfonic acid group, the change preferably with 1 carboxylic group and 1 sulfonic acid group
Aromatic hydrocarbon, the phosphoric acid carboxylic acid compound of compound refer to the compound with 1 carboxylic group and 1 phosphate group, preferably with 1
The aromatic hydrocarbon or alkane of the compound of individual carboxylic group and 1 phosphate group.
Carboxyl quaternary ammonium compound, sulfo group quaternary ammonium compound, phosphate quaternary ammonium compound can pass through chlorinated carboxylic acid or salt, chlorine
Prepared for sulfonic acid or salt, chlorophosphate or salt and reactive tertiary amine.
Chlorinated carboxylic acid or salt are commercially available prod.
The preparation method of chlorosulfonic acid or salt, chlorophosphate or salt：
In dibastic sodium phosphate or sodium bisulphate solution, under 60-80 degrees Celsius, epoxychloropropane, final phosphoric acid hydrogen is added dropwise
The mol ratio of sodium or niter cake and epoxychloropropane is 1:1,40 degrees Celsius are cooled to, same mole of methanol is added, is cooled to 5
Degree Celsius, filtering for crystallizing obtains chloro hydroxypropionate sodium or the sodium phosphate of chloro hydroxyl third.The yield of the reaction is generally higher than
90%。
Tertiary amine of the present invention has NR1R2R3 structures, and R1, R2, R3 independently represent alkane of the carbon number as 1-30
Hydrocarbon, it is preferable that any two in R1, R2, R3 is methyl, and another is the linear paraffin that carbon number is 10-20.
In one embodiment of the invention, by adding carboxyl quaternary ammonium compound, dicarboxylic acid compound, carboxyl season is obtained
Amino modified organosilicon.Modified organic silicon with anion and cation can mix the anion sun that agent is mixed in agent again with leather
Ion is connected, and by the penetrating power of organosilicon, improves stability of the organosilicon in leather surface, while so that organosilicon is fixed
Property arrangement, further increase brightness.Preferably, the organosilicon is side chain graft carboxyl quaternary amine organosilicon.
The leather restorative also includes one kind or several in bactericide, spices, preservative, antioxidant, antistatic additive
Kind.
Hereinafter, the present invention is explained in more detail by embodiment, it should be appreciated that these embodiments are only
Illustrate and it is nonrestrictive.If without other explanations, raw materials used is all commercially available.
The present invention is described in detail referring to several examples.
Carboxy-modified organosilicon A1
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection.
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane, hexamethyl and siloxanes, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, are warming up to 80-85 degrees Celsius, stir and protect
Hold 2-3 hours, add N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, be warming up to 100 degrees Celsius, stir and keep
Certain time.After the completion of reaction, it is rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane.
Amino silicones are dissolved in acetone, succinic acid is added dropwise under ice bath, after the completion of reaction, pressurization removing low boiling
Point compound, obtains carboxy-modified organosilicon A1, by GPC, and it is 2100, acid number 56mgKOH/g to obtain its molecular weight.
Carboxy-modified organosilicon A2
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection.
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane, hexamethyl and siloxanes, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, are warming up to 80-85 degrees Celsius, stir and protect
Hold 2-3 hours, add N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, be warming up to 100 degrees Celsius, stir and keep
Certain time.After the completion of reaction, it is rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane.
Amino silicones are dissolved in acetone, succinic acid is added dropwise under ice bath, after the completion of reaction, pressurization removing low boiling
Point compound, obtains carboxy-modified organosilicon A2, by GPC, and it is 3400, acid number 42mgKOH/g to obtain its molecular weight.
Carboxy-modified organosilicon A3
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection.
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane, hexamethyl and siloxanes, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, are warming up to 80-85 degrees Celsius, stir and protect
Hold 2-3 hours, add N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, be warming up to 100 degrees Celsius, stir and keep
Certain time.After the completion of reaction, it is rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane.
Amino silicones are dissolved in acetone, succinic acid is added dropwise under ice bath, after the completion of reaction, pressurization removing low boiling
Point compound, obtains carboxy-modified organosilicon A3, by GPC, and it is 6900, acid number 35mgKOH/g to obtain its molecular weight.
Sulfonic group modified organosilicon A4
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection.
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane, hexamethyl and siloxanes, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, are warming up to 80-85 degrees Celsius, stir and protect
Hold 2-3 hours, add N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, be warming up to 100 degrees Celsius, stir and keep
Certain time.After the completion of reaction, it is rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane.
Amino silicones are dissolved in acetone, sulfosalicylic acid is added dropwise under ice bath, after the completion of reaction, pressurization removing
Low-boiling compound, obtains sulfonic acid modified organosilicon, by GPC, and it is 4500, acid number 112mgKOH/g to obtain its molecular weight.
Carboxyl quaternary amine base modified organic silicon A5
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection.
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane, hexamethyl and siloxanes, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, are warming up to 80-85 degrees Celsius, stir and protect
Hold 2-3 hours, add N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, be warming up to 100 degrees Celsius, stir and keep
Certain time.After the completion of reaction, it is rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane.
In a nitrogen atmosphere, dodeca-tertiary amine is dissolved in acetone, chloro pentane acid is added dropwise, issued at 40 degrees Celsius biochemical anti-
Should, carboxyl quaternary ammonium compound X1, yield about 87% are obtained after purification；
Amino silicones are dissolved in acetone, carboxyl quaternary ammonium compound X1 and succinic acid are successively added dropwise under ice bath
（Mol ratio 1:1）, after the completion of reaction, pressurization removing low-boiling compound obtains carboxyl quaternary amine base modified organic silicon, by GPC,
It is 6300, acid number 98mgKOH/g to obtain its molecular weight.
Sulfonic group quaternary amine base modified organic silicon A6
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection.
In the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox is added
Cyclotetrasiloxane, hexamethyl and siloxanes, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, are warming up to 80-85 degrees Celsius, stir and protect
Hold 2-3 hours, add N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes, be warming up to 100 degrees Celsius, stir and keep
Certain time.After the completion of reaction, it is rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane.
In a nitrogen atmosphere, dodeca-tertiary amine is dissolved in acetone, chloro hydroxypropionate sodium is added dropwise, under 40 degrees Celsius
Chemically react, carboxyl quaternary ammonium compound X2, yield about 93% are obtained after purification；
Amino silicones are dissolved in acetone, carboxyl quaternary ammonium compound X2 and sulfosalisylic are successively added dropwise under ice bath
Acid（Mol ratio 1:1）, after the completion of reaction, pressurization removing low-boiling compound obtains sulfonic group quaternary amine base modified organic silicon, passed through
GPC, it is 7800, acid number 32mgKOH/g to obtain its molecular weight.
Organosilicon A7
Dimethyl siloxane, molecular weight 5000, the siliconated factory of Jiangxi spark.
Embodiment 1
In leather restorative R1, the parts by weight of organosilicon A1 60；The parts by weight of 1,2,4- butantriols 20；30-50 paraffins mixtures
20 parts by weight, the parts by weight of ethanol 200.
Embodiment 2
In leather restorative R2, the parts by weight of organosilicon A2 30；The parts by weight of 1,2,4- butantriols 30；20-50 paraffins mixtures
20 parts by weight, the parts by weight of ethanol 200.
Embodiment 3
In leather restorative R3, the parts by weight of organosilicon A3 30；The parts by weight of 1,2,4- butantriols 30；The positive weight of melissane hydrocarbon 30
Measure part, the parts by weight of ethanol 200.
Embodiment 4
In leather restorative R4, the parts by weight of organosilicon A2 40；The parts by weight of 1,2,4- butantriols 40；The positive weight of 50 alkane 10
Part, the parts by weight of ethanol 100.
Embodiment 5
In leather restorative R5, the parts by weight of organosilicon A5 10；The parts by weight of 1,2,4- butantriols 30；The weight of melissane hydrocarbon 20
Part, the parts by weight of ethanol 200.
Embodiment 6
In leather restorative R6, the parts by weight of organosilicon A6 10；The parts by weight of 1,2,4- butantriols 30；The weight of tetracontane hydrocarbon 10
Part, the parts by weight of ethanol 150.
Embodiment 7
In leather restorative R7, the parts by weight of organosilicon A7 40；The parts by weight of 1,2,4- butantriols 10；The weight of melissane hydrocarbon 40
Part, the parts by weight of ethanol 200, the parts by weight of spices 0.1.
Embodiment 8
In leather restorative R8, the parts by weight of organosilicon A7 50；The parts by weight of 1,2,4- butantriols 20；The weight of melissane hydrocarbon 30
Part, the parts by weight of ethanol 200, the parts by weight of spices 0.1.
One of purposes of leather restorative of the present invention is：The leather of cracking is recovered again：
（1）Cleaning
1. preliminary cleaning, the surface of one integral piece leather wear is uniformly wiped to cleaning；
2. cleaning solution is dipped, uniformly smears, dries in the whole surface of Leatherwear；
Wherein, cleaning solution can be alcohol and the mixture of ammoniacal liquor, such as can be formula as below：Alcohol 150~200
Part, 700 parts of water, 100~150 parts of ammoniacal liquor；
（2）Filling
Filling liquid is uniformly brushed to the whole surface in leather wear, dried；
Filling liquid be organic-inorganic particle emulsion, can using formula as：80~100 parts of pigment paste, filler 50~
80 parts, 100 parts of water, 80~100 parts of soft-type acrylic resin, 100~120 parts of filled-type acrylic resin, in
100~120 parts of soft-type polyurethane resin；
（3）Spray the leather restorative of the present invention.
Evaluation method：
Leather after recovery is immersed in propanol/water/tetrachloro-ethylene（1:1:1, appropriate surfactant）In solution, often
Secondary immersion 5 minutes, contrast brightness and pliability after drying.
Ethanol equal solvent can be used to be diluted to sprayable liquid for foregoing leather restorative, by leather restorative be sprayed on through
On the leather for crossing dry-cleaning, after to be restored dose of drying, leather is that can be used, and obtains the leather of surface-brightening.Also need to it will can reply
Leather is by polishing, then leather restorative is sprayed on polished leather, and leather is that can be used, and obtains the skin of surface-brightening
Leather.Leather after over recovery is after dry-cleaning, and surface brightness is not almost reduced.
Found by contrast experiment, using molecular weight in 2000-8000 organosilicon, leather restorative can be effectively improved
Brightness, leather restorative of the invention will not also reduce the pliability of leather.And using molecular weight be about 12000 it is organic
Silicon, the brightness of leather is substantially reduced.The brightness that detailed can improve leather using the organosilicon with zwitterion is kept
Ability.
Claims (1)
1. leather restorative, it is characterised in that the leather restorative is by 10 parts by weight organosilicons, the fourth three of 30 parts by weight 1,2,4-
Alcohol, 20 parts by weight melissane hydrocarbon, 200 parts by weight of ethanol used as solvent are constituted, and the leather restorative is solution state,
The molecular weight of the organosilicon is 6300；The organosilicon is carboxyl quaternary amine base modified organic silicon；Wherein, the carboxyl quaternary amine base
Modified organic silicon is carboxyl quaternary ammonium compound and succinic acid modified organic silicon, and the carboxyl quaternary ammonium compound preparing raw material includes ten
Two tertiary amines and chloro pentane acid；
The preparation method of the carboxyl quaternary amine base modified organic silicon is as follows：
(1) in the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox ring is added
Tetrasiloxane and potassium hydroxide, at 130 degrees Celsius, reaction 2-3 hours, obtains alkali glue under decompression and nitrogen protection；
(2) in the 250ml four-hole boiling flasks equipped with agitator, reflux condensing tube, thermometer and nitrogen conduit, prestox ring is added
Tetrasiloxane, HMDO, alkali glue, dimethyl sulfoxide (DMSO) are well mixed, and are warming up to 80-85 degrees Celsius, are stirred and keep
2-3 hours, N-2- aminoethyl -3- aminopropyltriethoxy dimethoxysilanes are added, 100 degrees Celsius are warming up to, stirred and keep one
Fix time, after the completion of reaction, be rapidly heated to 140 degrees Celsius, pressurization removing low-boiling compound obtains side aminopolysiloxane
Alkane；
(3) in a nitrogen atmosphere, dodeca-tertiary amine is dissolved in acetone, chloro pentane acid is added dropwise, issued at 40 degrees Celsius biochemical anti-
Should, carboxyl quaternary ammonium compound X1 is obtained after purification；
(4) amino silicones are dissolved in acetone, carboxyl quaternary ammonium compound X1 and succinic acid, two is successively added dropwise under ice bath
Person's mol ratio is 1:1, after the completion of reaction, pressurization removing low-boiling compound obtains carboxyl quaternary amine base modified organic silicon.
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| CN201510055076.9A CN104651549B (en) | 2015-02-03 | 2015-02-03 | Leather restorative |
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| CN201510055076.9A CN104651549B (en) | 2015-02-03 | 2015-02-03 | Leather restorative |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103666290A (en) * | 2013-11-27 | 2014-03-26 | 南通市通州区川姜镇盛世王朝家用纺织品设计工作室 | Leather cleaner |
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| US5514419A (en) * | 1994-10-04 | 1996-05-07 | Dow Corning Corporation | Method for treating plastic, leather or rubber substrates |
| CN1253980A (en) * | 1999-12-22 | 2000-05-24 | 王贵林 | Leather protection agent |
| CN101250597B (en) * | 2008-03-13 | 2012-05-09 | 陕西科技大学 | Preparation method of nano self-cleaning leather or product |
| CN102838936A (en) * | 2011-06-21 | 2012-12-26 | 刘惠如 | Method for preparing mildew-proof leather polish |
| CN103045411A (en) * | 2012-12-05 | 2013-04-17 | 刘聪 | Leather cleaner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103666290A (en) * | 2013-11-27 | 2014-03-26 | 南通市通州区川姜镇盛世王朝家用纺织品设计工作室 | Leather cleaner |
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