CN106519977A - Composite finishing agent used for leather care, and preparation method thereof - Google Patents
Composite finishing agent used for leather care, and preparation method thereof Download PDFInfo
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- CN106519977A CN106519977A CN201611043923.0A CN201611043923A CN106519977A CN 106519977 A CN106519977 A CN 106519977A CN 201611043923 A CN201611043923 A CN 201611043923A CN 106519977 A CN106519977 A CN 106519977A
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Classifications
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- 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
- C09D191/00—Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
- C09D191/06—Waxes
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The invention discloses a composite finishing agent used for leather care, and a preparation method thereof, and relates to the technical field of leather care. The composite finishing agent is prepared from, by weight, 10-15 parts of Vaseline, 10-15 parts of modified rapeseed oil, 3-6 parts of pentaerythritol ester of hydogenated rosin, 2-4 parts of C5 hydrogenated petroleum resin, 2-4 parts of a wax assistant, 1-2 parts of glycidyl methacrylate, 1-2 parts of crospovidone, 0.5-1 part of hexamethoxymethylmelamine, 0.5-1 parts of powdery nitrile butadiene rubber, 0.5-1 part of polymeric aluminum chloride, 0.3-0.5 parts of trimethylolpropane triacrylate and 0.3-0.5 parts of sodium bicarbonate powder. The finishing agent is suitable for leather care, and cared leather has soft and smooth hand feeling, bright, smooth and clean appearance and effectively prolonged service life.
Description
Technical field：
The present invention relates to leather technical field, and in particular to a kind of leather composite paint and its preparation side
Method.
Background technology：
Leather finishing agent, be for leather surface cover with paint, lacquer, colour wash, etc. protection and beautify leather a leather-like auxiliary agent general designation, it by
Film forming matter, coloured material, solvent and auxiliary agent are formulated according to a certain percentage, and wherein film forming matter is the base of leather finishing agent
Plinth.Leather finishing agent also has very important effect in leather manufacture industry, and it is attractive in appearance to increase leather, when extending leather and using
Between, hence it is evident that the quality and class of progressive leatherware, increase trade value.Leather because its water resistant anti-soil and it is elegant in appearance the advantages of
And be loved by the people, but cracking, abrasion and cut occurs in use for some time, it is therefore desirable to time-based maintenance.But mesh
Front used finishing agent great majority can only form layer protecting film in leather surface, it is impossible to penetrate into inside leather to improve skin
The performance of leather.
The content of the invention：
The technical problem to be solved is to provide one kind to significantly improve leather performance to extend leather
Leather composite paint of service life and preparation method thereof.
The technical problem to be solved is realized using following technical scheme：
A kind of leather composite paint, is made up of the raw material of following parts by weight：
Vaseline 10-15 parts, modified colza 10-15 parts, hydrogenated rosin pentaerythritol ester 3-6 parts, C5 hydrotreated petroleum trees
Fat 2-4 parts, wax assistant 2-4 parts, glycidyl methacrylate 1-2 part, polyvinylpolypyrrolidone 1-2 parts, hexamethylol melamine
Amine pregnancy ether 0.5-1 parts, PNBR 0.5-1 parts, aluminium polychlorid 0.5-1 parts, trimethylolpropane trimethacrylate
0.3-0.5 parts, saleratus power 0.3-0.5 parts；
The modified colza is formed by Oleum Brassicae campestriss are modified, and its method of modifying is：First by Oleum Brassicae campestriss with 10 DEG C/min plus
Thermal velocity is warming up to 190-200 DEG C of insulation mixing 5min, and it is mixed to be cooled to 100-110 DEG C of insulation with the rate of cooling of 5 DEG C/min
5min is closed, 190-200 DEG C of insulation mixing 5min is warming up to the firing rate of 10 DEG C/min again, then with the cold of 5 DEG C/min
But speed is cooled to room temperature, crosses 400 mesh sieves after standing 1h, and polyquaternary ammonium salt and spermol are added in filtrate, profit after being sufficiently mixed
With microwave treater microwave treatment 5min, 400 mesh sieves are crossed again, modified colza is obtained final product.
The weight ratio of the Oleum Brassicae campestriss, polyquaternary ammonium salt and spermol is 15-20:0.5-1:0.5-1.
The working condition of the microwave treater is microwave frequency 2450MHz, power 700W.
The modified process of above-mentioned Oleum Brassicae campestriss, is on the one hand prevented from Oleum Brassicae campestriss during high temperature action and produces impurity, on the other hand
Strengthen the blending of Oleum Brassicae campestriss and remaining raw material.
The vaseline is pharmaceutical grade vaseline.
The wax assistant is made up of the raw material of following parts by weight：Rice bran wax 5-10 parts, microwax 3-6 parts, polyoxyethylene
Alkene 3-6 parts, hydrogenated palm oil 2-4 part, gum dammar 1-2 parts, sodium abietate 1-2 parts, butyl stearate 0.5-1 parts, C9 oil
Resin 0.5-1 parts, water 50-60 parts, its preparation method is：Rice bran wax, microwax and gum dammar are heated to into 85-90 DEG C of insulation
Mixing 15min, adds hydrogenated palm oil, butyl stearate and C9 Petropols, continues to be heated to 100-105 DEG C of insulation mixing
10min, is then lowered the temperature with the rate of cooling of 10 DEG C/min, and the insulation after temperature is down to 0-5 DEG C stands 30min, is subsequently added poly-
Ethylene oxide, sodium abietate and water, and heated up with the firing rate of 10 DEG C/min, treat that temperature rises to reflux state insulation mixing
15min, gained mixture are sent in spray dryer, obtain final product wax assistant granule after being dried.
Above-mentioned wax assistant can not only improve the lubricity of made finishing agent, moreover it is possible to significantly increase the infiltration of made finishing agent
Property, and make to penetrate into the finishing agent inside leather and leather fiber strong bonded, so that the flexibility for improving leather is good and toughness.
A kind of preparation method of leather composite paint, comprises the steps：
(1) addition C5 hydrogenated petroleum resins and PNBR in hydrogenated rosin pentaerythritol ester, and be heated to
115-120 DEG C of insulation mixing 15min, adds wax assistant and glycidyl methacrylate, continues insulation mixing 10min,
Then room temperature is naturally cooled to, material I is obtained final product；
(2) addition hexakis(hydroxymethyl)melamine pregnancy ether and trimethylolpropane trimethacrylate in modified colza,
And 100-105 DEG C of insulation mixing 10min is heated to, room temperature is then naturally cooled to, material II is obtained final product；
(3) addition material II, polyvinylpolypyrrolidone and aluminium polychlorid in material I, and it is mixed to be heated to 110-115 DEG C of insulation
10min is closed, and is finally added vaseline and saleratus power while hot, is sent in ball mill after being sufficiently mixed, fineness is milled to less than 10 μ
m。
The invention has the beneficial effects as follows：Finishing agent of the present invention is applied to the maintenance of leather, and the leather hand feeling Jing after maintenance is soft
Soft smooth, outward appearance is bright bright and clean；One layer of ultra-thin protecting film can not only be formed in leather surface, play the protection effect of water proof anti-soil
Really；Can also penetrate into inside leather with leather fiber strong bonded, improve leather flexibility is good and toughness；And Jing after maintenance
Leather there is excellent yellowing resistance, resistance to xerotripsis and wet-rub resistance, so as to extend the service life of leather.
Specific embodiment：
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
(1) 2 parts of C5 hydrogenated petroleum resins of addition and 0.5 part of PNBR in 4 parts of hydrogenated rosin pentaerythritol esters,
And 115-120 DEG C of insulation mixing 15min is heated to, 2 parts of wax assistants and 1 part of glycidyl methacrylate are added, is continued
Insulation mixing 10min, then naturally cools to room temperature, obtains final product material I；
(2) 0.5 part of hexakis(hydroxymethyl)melamine pregnancy ether of addition and 0.5 part of trihydroxy methyl third in 10 parts of modified colzas
Alkane triacrylate, and 100-105 DEG C of insulation mixing 10min is heated to, room temperature is then naturally cooled to, material II is obtained final product；
(3) addition material II, 2 parts of polyvinylpolypyrrolidone and 0.5 part of aluminium polychlorid in material I, and it is heated to 110-115
DEG C insulation mixing 10min, finally adds 15 parts of vaseline and 0.3 part of saleratus power while hot, is sent in ball mill after being sufficiently mixed,
Fineness is milled to less than 10 μm.
The preparation of modified colza：20 portions of Oleum Brassicae campestriss are warming up to into 190-200 DEG C of guarantor with the firing rate of 10 DEG C/min first
Temperature mixing 5min, and 100-110 DEG C of insulation mixing 5min is cooled to the rate of cooling of 5 DEG C/min, again with 10 DEG C/min's
Firing rate is warming up to 190-200 DEG C of insulation mixing 5min, is then cooled to room temperature with the rate of cooling of 5 DEG C/min, stands 1h
400 mesh sieves being crossed afterwards, 0.5 part of polyquaternary ammonium salt and 0.5 part of spermol being added in filtrate, microwave frequency is utilized after being sufficiently mixed
Microwave treater microwave treatment 5min of 2450MHz, power 700W, crosses 400 mesh sieves again, obtains final product modified colza.
The preparation of wax assistant：10 parts of rice bran waxs, 3 parts of microwaxes and 1 part of gum dammar are heated to into 85-90 DEG C of insulation mixing
15min, adds 2 parts of hydrogenated palm oil, 0.5 part of butyl stearate and 0.5 part of C9 Petropols, continues to be heated to 100-105
DEG C insulation mixing 10min, is then lowered the temperature with the rate of cooling of 10 DEG C/min, and the insulation after temperature is down to 0-5 DEG C stands 30min,
3 parts of polyethylene glycol oxides, 1 part of sodium abietate and 60 parts of water are subsequently added, and are heated up with the firing rate of 10 DEG C/min, treat temperature liter
To reflux state insulation mixing 15min, gained mixture is sent in spray dryer, obtains final product wax assistant granule after being dried.
Embodiment 2
(1) 2 parts of C5 hydrogenated petroleum resins of addition and 0.5 part of PNBR in 5 parts of hydrogenated rosin pentaerythritol esters,
And 115-120 DEG C of insulation mixing 15min is heated to, 3 parts of wax assistants and 1 part of glycidyl methacrylate are added, is continued
Insulation mixing 10min, then naturally cools to room temperature, obtains final product material I；
(2) 0.5 part of hexakis(hydroxymethyl)melamine pregnancy ether of addition and 0.5 part of trihydroxy methyl third in 10 parts of modified colzas
Alkane triacrylate, and 100-105 DEG C of insulation mixing 10min is heated to, room temperature is then naturally cooled to, material II is obtained final product；
(3) addition material II, 1 part of polyvinylpolypyrrolidone and 0.5 part of aluminium polychlorid in material I, and it is heated to 110-115
DEG C insulation mixing 10min, finally adds 15 parts of vaseline and 0.3 part of saleratus power while hot, is sent in ball mill after being sufficiently mixed,
Fineness is milled to less than 10 μm.
The preparation of modified colza：15 portions of Oleum Brassicae campestriss are warming up to into 190-200 DEG C of guarantor with the firing rate of 10 DEG C/min first
Temperature mixing 5min, and 100-110 DEG C of insulation mixing 5min is cooled to the rate of cooling of 5 DEG C/min, again with 10 DEG C/min's
Firing rate is warming up to 190-200 DEG C of insulation mixing 5min, is then cooled to room temperature with the rate of cooling of 5 DEG C/min, stands 1h
400 mesh sieves being crossed afterwards, 0.5 part of polyquaternary ammonium salt and 0.5 part of spermol being added in filtrate, microwave frequency is utilized after being sufficiently mixed
Microwave treater microwave treatment 5min of 2450MHz, power 700W, crosses 400 mesh sieves again, obtains final product modified colza.
The preparation of wax assistant：10 parts of rice bran waxs, 5 parts of microwaxes and 1 part of gum dammar are heated to into 85-90 DEG C of insulation mixing
15min, adds 2 parts of hydrogenated palm oil, 1 part of butyl stearate and 0.5 part of C9 Petropols, continues to be heated to 100-105 DEG C
Insulation mixing 10min, is then lowered the temperature with the rate of cooling of 10 DEG C/min, and the insulation after temperature is down to 0-5 DEG C stands 30min, with
5 parts of polyethylene glycol oxides, 1 part of sodium abietate and 60 parts of water are added afterwards, and is heated up with the firing rate of 10 DEG C/min, treat that temperature rises to
Reflux state insulation mixing 15min, gained mixture are sent in spray dryer, obtain final product wax assistant granule after being dried.
Embodiment 3
Embodiment 1 and 2 made composite paint of embodiment are used for into leather, and performance is carried out to the leather after maintenance
Determine, as a result as shown in table 1.
Leather Properties of the table 1 Jing after finishing agent maintenance
| Test event | Embodiment 1 | Embodiment 2 |
| Feel | It is soft, smooth | It is soft, smooth |
| Outward appearance | It is bright bright and clean | It is bright bright and clean |
| Color inhibition grade (level) | 5 | 5 |
| Resistance to xerotripsis (level) | 5 | 5 |
| Wet-rub resistance (level) | 5 | 5 |
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (6)
1. a kind of leather composite paint, it is characterised in that be made up of the raw material of following parts by weight：Vaseline 10-
15 parts, modified colza 10-15 parts, hydrogenated rosin pentaerythritol ester 3-6 parts, C5 hydrogenated petroleum resin 2-4 parts, wax assistant 2-4
Part, glycidyl methacrylate 1-2 part, polyvinylpolypyrrolidone 1-2 parts, hexakis(hydroxymethyl)melamine pregnancy ether 0.5-1 parts, powder
Last nitrile rubber 0.5-1 parts, aluminium polychlorid 0.5-1 parts, trimethylolpropane trimethacrylate 0.3-0.5 parts, saleratus power
0.3-0.5 parts；
The modified colza is formed by Oleum Brassicae campestriss are modified, and its method of modifying is：First by Oleum Brassicae campestriss with the heating speed of 10 DEG C/min
Degree is warming up to 190-200 DEG C of insulation mixing 5min, and is cooled to 100-110 DEG C of insulation mixing with the rate of cooling of 5 DEG C/min
5min, is warming up to 190-200 DEG C of insulation mixing 5min with the firing rate of 10 DEG C/min, again then with the cooling of 5 DEG C/min
Speed is cooled to room temperature, crosses 400 mesh sieves after standing 1h, adds polyquaternary ammonium salt and spermol, utilize after being sufficiently mixed in filtrate
Microwave treater microwave treatment 5min, crosses 400 mesh sieves again, obtains final product modified colza.
2. leather composite paint according to claim 1, it is characterised in that：The Oleum Brassicae campestriss, polyquaternary ammonium salt
Weight ratio with spermol is 15-20:0.5-1:0.5-1.
3. leather composite paint according to claim 1, it is characterised in that：The work of the microwave treater
Condition is microwave frequency 2450MHz, power 700W.
4. leather composite paint according to claim 1, it is characterised in that：The vaseline is that pharmaceutical grade is all
Intellectual circle.
5. leather composite paint according to claim 1, it is characterised in that the wax assistant is by following weight
The raw material of number is made：Rice bran wax 5-10 parts, microwax 3-6 parts, polyethylene glycol oxide 3-6 parts, hydrogenated palm oil 2-4 part, Da Ma
Resin 1-2 parts, sodium abietate 1-2 parts, butyl stearate 0.5-1 parts, C9 Petropols 0.5-1 parts, water 50-60 parts, its preparation
Method is：By rice bran wax, microwax and gum dammar be heated to 85-90 DEG C insulation mixing 15min, add hydrogenated palm oil,
Butyl stearate and C9 Petropols, continue to be heated to 100-105 DEG C of insulation mixing 10min, then with the cooling of 10 DEG C/min
Speed is lowered the temperature, and the insulation after temperature is down to 0-5 DEG C stands 30min, is subsequently added polyethylene glycol oxide, sodium abietate and water, and with
The firing rate of 10 DEG C/min heats up, and treats that temperature rises to reflux state insulation mixing 15min, and gained mixture is sent into and is spray-dried
In machine, after being dried, wax assistant granule is obtained final product.
6. a kind of preparation method of leather composite paint, it is characterised in that comprise the steps：
(1) addition C5 hydrogenated petroleum resins and PNBR in hydrogenated rosin pentaerythritol ester, and it is heated to 115-120
DEG C insulation mixing 15min, adds wax assistant and glycidyl methacrylate, continues insulation mixing 10min, then natural
Room temperature is cooled to, material I is obtained final product；
(2) addition hexakis(hydroxymethyl)melamine pregnancy ether and trimethylolpropane trimethacrylate in modified colza, and plus
Then heat naturally cool to room temperature, obtain final product material II to 100-105 DEG C of insulation mixing 10min；
(3) addition material II, polyvinylpolypyrrolidone and aluminium polychlorid in material I, and it is heated to 110-115 DEG C of insulation mixing
10min, finally adds vaseline and saleratus power while hot, sends in ball mill after being sufficiently mixed, be milled to fineness less than 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043923.0A CN106519977A (en) | 2016-11-24 | 2016-11-24 | Composite finishing agent used for leather care, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611043923.0A CN106519977A (en) | 2016-11-24 | 2016-11-24 | Composite finishing agent used for leather care, and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106519977A true CN106519977A (en) | 2017-03-22 |
Family
ID=58356729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611043923.0A Pending CN106519977A (en) | 2016-11-24 | 2016-11-24 | Composite finishing agent used for leather care, and preparation method thereof |
Country Status (1)
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| CN (1) | CN106519977A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107494634A (en) * | 2017-08-08 | 2017-12-22 | 深圳沃海森科技有限公司 | Bactericide of domestic air conditioning screen pack and preparation method thereof |
| CN107557177A (en) * | 2017-08-08 | 2018-01-09 | 深圳沃海森科技有限公司 | air conditioner for automobile natural cleaning agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618673A (en) * | 2012-03-26 | 2012-08-01 | 陕西科技大学 | Preparation method of modified rapeseed oil fat-liquoring complex agent |
| CN102703623A (en) * | 2012-06-11 | 2012-10-03 | 科凯精细化工（上海）有限公司 | Novel greasing agent for synthetic leather and preparation method for novel greasing agent |
| CN103789465A (en) * | 2012-11-05 | 2014-05-14 | 中国石油化工股份有限公司 | Leather greasing treatment agent and preparation method thereof |
-
2016
- 2016-11-24 CN CN201611043923.0A patent/CN106519977A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618673A (en) * | 2012-03-26 | 2012-08-01 | 陕西科技大学 | Preparation method of modified rapeseed oil fat-liquoring complex agent |
| CN102703623A (en) * | 2012-06-11 | 2012-10-03 | 科凯精细化工（上海）有限公司 | Novel greasing agent for synthetic leather and preparation method for novel greasing agent |
| CN103789465A (en) * | 2012-11-05 | 2014-05-14 | 中国石油化工股份有限公司 | Leather greasing treatment agent and preparation method thereof |
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| 陈开勋: "《新领域精细化工》", 31 March 1999 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107494634A (en) * | 2017-08-08 | 2017-12-22 | 深圳沃海森科技有限公司 | Bactericide of domestic air conditioning screen pack and preparation method thereof |
| CN107557177A (en) * | 2017-08-08 | 2018-01-09 | 深圳沃海森科技有限公司 | air conditioner for automobile natural cleaning agent and preparation method thereof |
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Application publication date: 20170322 |