CN107937170A - A kind of automobile clean nurses self-cleaning concentrated emulsion synthesis and preparation method - Google Patents
A kind of automobile clean nurses self-cleaning concentrated emulsion synthesis and preparation method Download PDFInfo
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- CN107937170A CN107937170A CN201711108977.5A CN201711108977A CN107937170A CN 107937170 A CN107937170 A CN 107937170A CN 201711108977 A CN201711108977 A CN 201711108977A CN 107937170 A CN107937170 A CN 107937170A
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- self
- sulfonic acid
- concentrated emulsion
- automobile
- cleaning
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Classifications
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/83—Mixtures of non-ionic with anionic compounds
- C11D1/831—Mixtures of non-ionic with anionic compounds of sulfonates with ethers of polyoxyalkylenes without phosphates
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/044—Hydroxides or bases
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/162—Organic compounds containing Si
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
- C11D3/3734—Cyclic silicones
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/008—Polymeric surface-active agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
- C11D1/146—Sulfuric acid esters
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
Abstract
The invention discloses a kind of automobile clean to nurse self-cleaning concentrated emulsion, it by 20 40wt% octamethylcy-clotetrasiloxane or dimethyl siloxane mixed methylcyclosiloxane, the trifluoro propyl methyl cyclotrisiloxane of 3 8wt%, the polyoxyethylene laurel ether of 0.3 0.8wt%, the sulfonic acid of 4 9wt%, the deionized water of 40 60wt%, 0.4 1wt% sodium hydroxides, 6 10wt% lauryl sodium sulfate form, add in the high-speed stirred dispersing apparatus emulsion tank of energy heating tape, heat high speed dispersion mixing, being again heated to 70 ~ 80 DEG C makes sulfonic acid fully dissolve, sodium hydrate aqueous solution is added dropwise again and is neutralized to lotion pH7, lauryl sodium sulfate is added to stir evenly as the self-cleaning concentrated emulsion of automobile clean nursing.It has expelling water displacement of reservoir oil self-cleaning action, and feel is smooth, makes car film is beautiful to shine people, effectively keeps out the injury to car body such as rain, snow, wind, sand, and protects car paint bright luster without damage.
Description
Technical field
The present invention relates to automobile clean to nurse self-cleaning concentrated emulsion synthetic technology, more particularly to a kind of micro- water car-washing and nursing
Concentrated emulsion synthesis and preparation method.
Background technology
It is well known that consumption of the carwash for water resource is larger, a car is often washed in general car detailing shop will exhaust 50-
More than 100 liters water, main carwash flow include：Prepare, pick up, rush car, foam of getting blisters, wipe outside car, wiping in-car portion, inspection
Seven links such as look into.Detergent carwash steeps even with some using strong basicity height in existing market major part carwash speciality store first
High foam detergent powder boiling water, although so cost it is low and can fast decontaminating, but not consider the maintenance of paint film, long-time service can accelerate
The quick aging of car paint, it is eclipsed, be cracked, get rusty.These situations are also that car owners easily ignore；Secondly use High Pressure Gun
Water car-washing can affect car body, be unfavorable for the long-term maintenance of car.Additionally due in the tradition of the long-term mistake of people
Under ideal effect, misidentification is more clean using a large amount of water erasing mode carwash all the time, this is a very big mistake in fact
Area, both wasted water or sank money.
Therefore, more than what time from the point of view of, the abnormality of carwash must be reformed.In the past due to technical and other reasons
Some simple water-saving vehicle washing technologies are made to fail effectively to be promoted, and some waterless carwash equipment are costly, thus not
Accepted.Nowadays, with modern high-new technology products continue to bring out and science and technology continuous development, one kind can be invented
Chemical cleaning and physical cleaning are combined, automobile is cleaned, is waxed, glazing, the one step completed new automobile of maintenance it is clear
Cleaning and nursing mode.The advantage of this kind of method be during whole carwash it is simple and convenient, oneself can be solved, additional be set without any
It is standby, few to water consumption, clean dirt effect is preferable, while can be adapted to various environment to vehicle clean, car owner can be saved
Plenty of time.Analysis is, it is necessary to effectively innovate the prior art more than.Also there are the product of micro- water car-washing, such as CN at present
102586036 A, which are provided, a kind of to be saved water resource, can make stain and lacquer painting is automatically separated, polishing effect is excellent, interior trim cleaning
Effect is good, can keep the original natural characteristic of clean surface and vigor, the non-washing type elite for being conducive to save car-cleaning cost
Element and preparation method thereof, but the water-based montanin wax with protection paint film and polishing action that the method uses, for surface glazing
Dimethicone, these are all inert fractions, do not have a reactivity, in surface attachment force difference, action effective after automobile clean
Short, the defects of self-cleaning effect is poor.
The content of the invention
For with having there are disadvantages described above in technology, the present invention provides a kind of automobile clean for being conducive to save car-cleaning cost
Nurse self-cleaning concentrated emulsion synthetic technology and preparation method.
To achieve the above object, the present invention uses following technical scheme：
Automobile clean of the present invention nurses octamethylcy-clotetrasiloxane or dimethyl-silicon of the self-cleaning concentrated emulsion by 20-40wt%
Trifluoro propyl methyl cyclotrisiloxane, the polyoxyethylene laurel ether of 0.3-0.8wt%, the 4-9wt% of oxygen alkane mixed methylcyclosiloxane, 3-8wt%
Sulfonic acid, the deionized water of 40-60wt%, 0.4-1wt% sodium hydroxides, 6-10wt% lauryl sodium sulfate composition, by quality hundred
Ratio is divided to weigh octamethylcy-clotetrasiloxane or dimethyl siloxane mixed methylcyclosiloxane, trifluoro propyl methyl cyclotrisiloxane, polyoxy second
Alkene bay ether is added in the high-speed stirred dispersing apparatus emulsion tank of energy heating tape, 40 ~ 50 DEG C of high speed dispersions mixing is heated, by quality hundred
Divide and be added to than weighing sulfonic acid and portions of de-ionized water in another energy heating tape mixing plant container, being heated to 70 ~ 80 DEG C makes
Sulfonic acid fully dissolves, and the sulfonic acid aqueous solution dissolved is added drop-wise in emulsion tank with acidproof peristaltic pump while hot, after being added dropwise, often
Temperature continue stirring reaction 8 it is small when, then sodium hydrate aqueous solution is added dropwise and is neutralized to lotion pH7, add lauryl sodium sulfate stirring
It is uniformly that automobile clean nurses self-cleaning concentrated emulsion.
Application method of the present invention is to nurse self-cleaning concentrated emulsion with the automobile clean of synthesis to be diluted with water 100 ~ 200 times, is added
Enter to dilute the catalytic crosslinking complexing agent aminopropyl triethoxysilane of weight 0.05%（KH550 silane coupling agents）, use spray apparatus
The position to be cleaned of spraying automobile, surfactant component can be such that stain is automatically separated with lacquer painting, slightly be wiped with cotton towel
It is dirty, adsorb the residual lotion at position to be cleaned and crosslink reaction gradually, form one layer of organosilicon membrane, the organosilicon membrane energy
It is hydrophobic self-cleaning, the original natural characteristic of clean surface and vigor can be kept, car care timeliness is grown, there is the self-cleaning work of the expelling water displacement of reservoir oil
With glossiness is good, protects automobile to be damaged from harmful components in ultraviolet and air.
When adding auxiliary agent to automobile clean after the self-cleaning concentrated emulsion dilution of automobile clean nursing of the present invention, stain and paint can be made
Face is automatically separated, and outer surface of automobile can be hydrophobic self-cleaning after cleaning, the original natural characteristic of clean surface and vigor can be kept, to automobile
Timeliness length is nursed, has expelling water displacement of reservoir oil self-cleaning action, glossiness is good, protects automobile to be damaged from harmful components in ultraviolet and air
Evil.
The present invention is usually diluted with water 100 ~ 200 times when using, and adds a small amount of catalytic crosslinking complexing agent aminopropyl three
Ethoxysilane.
Beneficial effect of the present invention：By present invention synthesis automobile clean nurse self-cleaning concentrated emulsion add light water dilution 100 ~
200 times, add catalytic crosslinking complexing agent aminopropyl triethoxysilane（KH55 silane coupling agents）, with spray apparatus spraying automobile
Meeting rapid osmotic, effectively makes spot produce gap with car paint, in sandy soil particle and car paint after the position this product to be cleaned is sprayed
Between form protective layer, while sand and spot under Action of Surfactant from the phenomenon of lacquer painting down slip-stream, at this moment use
The gently one brush of soil pick-up towel, sand and spot are adhered on towel, will not be scratched car paint, be remained in car body surface lotion, are sent out
Raw cross-linking reaction forms one layer of hydrophobic fluorine-containing organic silicon quality guarantee cuticula, has expelling water displacement of reservoir oil self-cleaning action, feel is smooth, makes car film
It is beautiful to shine people, the injury to car body such as rain, snow, wind, sand is effectively kept out, and protect car paint bright luster without damage.
Embodiment
In order to make those skilled in the art more fully understand technical scheme, below by specific embodiment come into
The present invention is described in detail in one step.
Embodiment one, the preferably described synthesis automobile clean of the present invention nurse the component mass percent of self-cleaning concentrated emulsion：
Octamethylcy-clotetrasiloxane（D4）30%th, trifluoro propyl methyl cyclotrisiloxane（D3F）5%th, polyoxyethylene laurel ether（OE-10）
0.5%；Sulfonic acid 6.5%, deionized water 49.2%, sodium hydroxide 0.8%, lauryl sodium sulfate（K12）8%.
Weigh octamethylcy-clotetrasiloxane（D4）300g, trifluoro propyl methyl cyclotrisiloxane（D3F）50g, polyoxyethylene
Bay ether（OE-10）5g is added in the 5 liters of emulsion tanks of high-speed stirred dispersing apparatus of energy heating tape, and 40 ~ 50 DEG C of high speed dispersions of heating are mixed
Close.Weigh sulfonic acid 65g and 392g deionized water to be added in another energy heating tape stirring flask, being heated to 80 DEG C of stirrings makes sulphur
Sour fully dissolving.The sulfonic acid aqueous solution dissolved is added drop-wise in emulsion tank with acidproof peristaltic pump, after being added dropwise, near room temperature
Continue stirring reaction 8 it is small when.Weigh 8g sodium hydroxides to be dissolved in 100g deionized waters, then be added drop-wise in milk tank and be neutralized to lotion
PH=7.Weigh lauryl sodium sulfate（K12）80g puts into milk tank, continues to stir evenly and is nursed as 1kg or so automobile cleans
Self-cleaning concentrated emulsion.
Weigh 3g automobile cleans and nurse self-cleaning concentrated emulsion in 1000ml spray bottles, add tap water to 600g, shake up.
Automobile surface to be cleaned is sprayed on, is slightly gently wiped with soil pick-up towel, polishing one time can also be wiped with another towel again.
Evaluation of result：
Aldehyde sterilization essence 3g is removed with automobile clean nursing and is diluted to 600g, can be cleaned in a wheelbase 2600mm family-sized car
Outside.Automobile external is rinsed with spray water and tested after when carwash 24 is small, and droplet is obvious, and feel is smooth, bright and new beautiful.Glass slide at the same time
Experiment, use Shanghai Zhongchen digital technology equipment Co., Ltd JC2000D1 contact angle measurements measure to water contact angle for
105 degree, to oily 67 degree of contact angle.
Embodiment two, the preferably described synthesis automobile clean of the present invention nurse the component mass percent of self-cleaning concentrated emulsion：
Octamethylcy-clotetrasiloxane（D4）23%th, trifluoro propyl methyl cyclotrisiloxane（D3F）7%th, polyoxyethylene laurel ether（OE-10）
0.7%；Sulfonic acid 5.5%, deionized water 56.2%, sodium hydroxide 0.6%, lauryl sodium sulfate（K12）7%.
Weigh dimethyl siloxane mixed methylcyclosiloxane（DMC）（D4）230g, trifluoro propyl methyl cyclotrisiloxane（D3F）
70g, polyoxyethylene laurel ether（OE-10）7g is added in the 5 liters of emulsion tanks of high-speed stirred dispersing apparatus of energy heating tape, heating 40 ~ 50
The mixing of DEG C high speed dispersion.Weigh sulfonic acid 55g and 462g deionized water to be added in another energy heating tape stirring flask, be heated to
80 DEG C of stirrings make sulfonic acid fully dissolve.The sulfonic acid aqueous solution dissolved is added drop-wise in emulsion tank with acidproof peristaltic pump, is dripped
Bi Hou, near room temperature continue stirring reaction 8 it is small when.Weigh 6g sodium hydroxides to be dissolved in 100g deionized waters, then be added drop-wise to lotion
Lotion PH=7 are neutralized in tank.Weigh lauryl sodium sulfate（K12）70g puts into milk tank, continues to stir evenly left as 1kg
Right automobile clean nurses self-cleaning concentrated emulsion.
Weigh 3g automobile cleans to nurse in self-cleaning concentrated emulsion 1000ml spray bottles, add tap water to 600g, shake up simultaneously
Add 100.Automobile surface to be cleaned is sprayed on, is slightly gently wiped with soil pick-up towel, can also be wiped again with another towel
Polishing one time.
Evaluation of result：
Aldehyde sterilization essence 3g is removed with automobile clean nursing and is diluted to 600g, can be cleaned in a wheelbase 2600mm family-sized car
Outside.Automobile external is rinsed with spray water and tested after when carwash 24 is small, and droplet is obvious, and feel is smooth, bright and new beautiful.Glass slide at the same time
Experiment, use Shanghai Zhongchen digital technology equipment Co., Ltd JC2000D1 contact angle measurements measure to water contact angle for
104 degree, to oily 65.8 degree of contact angle.
Claims (3)
1. a kind of automobile clean nurses self-cleaning concentrated emulsion, it is characterised in that：It by 20-40wt% octamethylcy-clotetrasiloxane
Or trifluoro propyl methyl cyclotrisiloxane, the polyoxyethylene moon of 0.3-0.8wt% of dimethyl siloxane mixed methylcyclosiloxane, 3-8wt%
Osmanthus ether, the sulfonic acid of 4-9wt%, the deionized water of 40-60wt%, 0.4-1wt% sodium hydroxides, 6-10wt% lauryl sodium sulfate groups
Into weighing octamethylcy-clotetrasiloxane or dimethyl siloxane mixed methylcyclosiloxane, three silicon of trifluoro propyl methyl ring by mass percentage
Oxygen alkane, polyoxyethylene laurel ether are added in the high-speed stirred dispersing apparatus emulsion tank of energy heating tape, and 40 ~ 50 DEG C of high speed dispersions of heating are mixed
Close, weigh sulfonic acid by mass percentage and portions of de-ionized water is added in another energy heating tape mixing plant container, heating
Sulfonic acid is fully dissolved to 70 ~ 80 DEG C, the sulfonic acid aqueous solution dissolved is added drop-wise in emulsion tank with acidproof peristaltic pump while hot, drip
After adding, room temperature continue stirring reaction 8 it is small when, then sodium hydrate aqueous solution is added dropwise and is neutralized to lotion pH7, add dodecyl
Sodium sulphate is stirred evenly nurses self-cleaning concentrated emulsion as automobile clean.
2. a kind of automobile clean according to claim 1 nurses self-cleaning concentrated emulsion, it is characterised in that：The automobile clean
Nursing the component mass percent of self-cleaning concentrated emulsion is：Octamethylcy-clotetrasiloxane or dimethyl siloxane mixing ring 30wt%,
Trifluoro propyl methyl cyclotrisiloxane 5wt%, 0.5 wt% of polyoxyethylene laurel ether；6.5 wt% of sulfonic acid, deionized water 49.2%,
Sodium hydroxide 0.8wt%, dodecyl sulphate 8wt %.
3. a kind of automobile clean according to claim 1 or 2 nurses self-cleaning concentrated emulsion, it is characterised in that：It is diluted with water
100 ~ 200 times, add the catalytic crosslinking complexing agent aminopropyl triethoxysilane of amount of dilution weight 0.05wt%（KH550 is silane coupled
Agent）, with the position to be cleaned of spray apparatus spraying automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108977.5A CN107937170A (en) | 2017-11-11 | 2017-11-11 | A kind of automobile clean nurses self-cleaning concentrated emulsion synthesis and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108977.5A CN107937170A (en) | 2017-11-11 | 2017-11-11 | A kind of automobile clean nurses self-cleaning concentrated emulsion synthesis and preparation method |
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| Publication Number | Publication Date |
|---|---|
| CN107937170A true CN107937170A (en) | 2018-04-20 |
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| CN201711108977.5A Pending CN107937170A (en) | 2017-11-11 | 2017-11-11 | A kind of automobile clean nurses self-cleaning concentrated emulsion synthesis and preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810800A (en) * | 2019-02-02 | 2019-05-28 | 江苏云瀚股份有限公司 | Expelling water light self-emulsifying composition |
| CN111088122A (en) * | 2019-12-25 | 2020-05-01 | 北京桂华悦洗科技有限公司 | Anhydrous car washing liquid and preparation method thereof |
| CN114456301A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Heat-resistant polymethyl methacrylate and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290739A (en) * | 2000-10-20 | 2001-04-11 | 崔凤瑞 | Multipurpose concentrated washing and protecting liquid |
| CN105950325A (en) * | 2016-05-11 | 2016-09-21 | 浙江金驰环保科技有限公司 | Automobile cleaning and polishing agent capable of avoiding scratches as well as preparation and application of automobile cleaning and polishing agent |
-
2017
- 2017-11-11 CN CN201711108977.5A patent/CN107937170A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290739A (en) * | 2000-10-20 | 2001-04-11 | 崔凤瑞 | Multipurpose concentrated washing and protecting liquid |
| CN105950325A (en) * | 2016-05-11 | 2016-09-21 | 浙江金驰环保科技有限公司 | Automobile cleaning and polishing agent capable of avoiding scratches as well as preparation and application of automobile cleaning and polishing agent |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109810800A (en) * | 2019-02-02 | 2019-05-28 | 江苏云瀚股份有限公司 | Expelling water light self-emulsifying composition |
| CN111088122A (en) * | 2019-12-25 | 2020-05-01 | 北京桂华悦洗科技有限公司 | Anhydrous car washing liquid and preparation method thereof |
| CN111088122B (en) * | 2019-12-25 | 2021-07-16 | 北京桂华悦洗科技有限公司 | Anhydrous car washing liquid and preparation method thereof |
| CN114456301A (en) * | 2020-10-21 | 2022-05-10 | 中国石油化工股份有限公司 | Heat-resistant polymethyl methacrylate and preparation method and application thereof |
| CN114456301B (en) * | 2020-10-21 | 2023-02-28 | 中国石油化工股份有限公司 | Heat-resistant polymethyl methacrylate and preparation method and application thereof |
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Application publication date: 20180420 |