CN106279568B - Long-chain alcohol ether polycarboxylic acids and its preparation method and application - Google Patents
Long-chain alcohol ether polycarboxylic acids and its preparation method and application Download PDFInfo
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- CN106279568B CN106279568B CN201610796755.6A CN201610796755A CN106279568B CN 106279568 B CN106279568 B CN 106279568B CN 201610796755 A CN201610796755 A CN 201610796755A CN 106279568 B CN106279568 B CN 106279568B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/11—Complex polyesters
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/11—Complex polyesters
- C10M2209/1105—Complex polyesters used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/04—Detergent property or dispersant property
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
Abstract
The present invention relates to a kind of long-chain alcohol ether polycarboxylic acids and its preparation method and application.The long-chain alcohol ether polycarboxylic acids has structure shown in formula I, in formula I, x=x=0-10, y=1-10, z=0-10, p=10-40, n=5-25, m=5-25；The long-chain alcohol ether polycarboxylic acids is prepared from the following materials: EO/PO block polyether, maleic anhydride, acrylic acid, initiator, chain-transferring agent and polymerization inhibitor；The molar ratio of the EO/PO block polyether, maleic anhydride and acrylic acid is 1:0.5~1.5:1.5~4；In the EO/PO block polyether, the molar ratio of EO:PO is 0.2~2:1.Long-chain alcohol ether polycarboxylic acids of the invention can be used as extreme-pressure lubricant use, have outstanding aqueous lubricating and antifriction performance, and safety and environmental protection, have splendid compatibility and intermiscibility with oil emulsion, emulsion cutting oil, not viscous bits, easy cleaning.
Description
Technical field
The present invention relates to field of lubricant, more particularly to a kind of long-chain alcohol ether polycarboxylic acids and its preparation method and application.
Background technique
Development with modern machinery and equipment to directions such as high speed, top load, high temperature, the lubrication state of equipment become more next
It is harsher；When mechanical equipment is under the conditions of high load capacity, high-revolving, the film that conventional lubricant is formed will be destroyed, no longer
Play the role of protecting metal surface, the case where contact surface will appear scratch, even sintering, just needs a kind of resistance to extreme pressure at this time
Lubricant improves the antiwear property of each component.
Now commonly using extreme-pressure lubricant has: chlorinated paraffin, phosphate, polyesters.Due to the parsing of chlorine in chlorinated paraffin ion,
Corrosion aggravation, is gradually eliminated.The eutrophication problem that phosphate is discharged due to phosphorus, it is also gradually disabled.Conventional polyester class profit
For lubrication prescription due to ester bond facile hydrolysis, service life is shorter, and belongs to oiliness extreme-pressure lubricant.
Summary of the invention
Based on this, the present invention provides a kind of long-chain alcohol ether polycarboxylic acids to have outstanding as a kind of aqueous extreme-pressure lubricant
Aqueous lubricating and antifriction performance.
Specific technical solution is as follows.
A kind of long-chain alcohol ether polycarboxylic acids has structure shown in formula I:
In formula I, x=0-10, y=1-10, z=0-10, p=10-40, n=5-25, m=5-25；
The long-chain alcohol ether polycarboxylic acids is prepared from the following materials: EO/PO block polyether, maleic anhydride, propylene
Acid, initiator, chain-transferring agent and polymerization inhibitor；
The molar ratio of the EO/PO block polyether, maleic anhydride and acrylic acid is 1:0.5~1.5:1.5~4；
In the EO/PO block polyether, the molar ratio of EO:PO is 0.2~2:1.
In wherein some embodiments, the molar ratio of the EO/PO block polyether, maleic anhydride and acrylic acid is 1:
0.8~1.2:2~3.
In wherein some embodiments, in the EO/PO block polyether, the molar ratio of EO:PO is 0.5~1.5:1.
In wherein some embodiments, the EO/PO block polyether is trans- block polyether.
In wherein some embodiments, the initiator is benzoyl peroxide, and dosage is the 0.05- of raw material gross weight
0.8%.
In wherein some embodiments, the dosage of the initiator is the 0.18-0.25% of raw material gross weight.
In wherein some embodiments, the chain-transferring agent is thioacetic acid or mercaptopropionic acid, and dosage is raw material gross weight
0.05-0.8%.
In wherein some embodiments, the dosage of the chain-transferring agent is the 0.08-0.15% of raw material gross weight.
In wherein some embodiments, the polymerization inhibitor is hydroquinone or p-hydroxyanisole, and dosage is raw material gross weight
The 0.05-0.8% of amount.
In wherein some embodiments, the dosage of the polymerization inhibitor is the 0.08-0.15% of raw material gross weight.
In wherein some embodiments, the long-chain alcohol ether polycarboxylic acids is 500-1500 centistoke in 40 DEG C of kinematic viscosity.
The present invention also provides a kind of preparation methods of above-mentioned long-chain alcohol ether polycarboxylic acids.
Specific technical solution is as follows:
A kind of preparation method of long-chain alcohol ether polycarboxylic acids, comprising the following steps:
Esterification: maleic anhydride and EO/PO block polyether react to obtain long-chain carboxylate, reaction temperature 40-120
DEG C, the reaction time is 0.5-6 hours；
Polymerization reaction: long-chain carboxylate is warming up to 60-150 DEG C, initiator and chain-transferring agent is added, then propylene is added dropwise
Acid, insulation reaction 0.5-10 hours；
It terminates reaction: temperature when polymerization reaction being maintained to vacuumize taste removal 1-2 hours, polymerization inhibitor is added, obtains the length
Chain alcohol ether polycarboxylic acids.
In wherein some embodiments, the reaction temperature of the esterification is 65-75 DEG C, and the reaction time is 1-3 hours.
In wherein some embodiments, the reaction temperature of the polymerization reaction is 85-95 DEG C, and the reaction time is 2-5 hours.
In wherein some embodiments, the reaction temperature of the esterification is 65-75 DEG C, and the reaction time is 1-3 hours；
The reaction temperature of the polymerization reaction is 85-95 DEG C, and the reaction time is 2-3 hours.
The present invention also provides the applications of above-mentioned long-chain alcohol ether polycarboxylic acids.
Specific technical solution is as follows:
Above-mentioned long-chain alcohol ether polycarboxylic acids is preparing the application in extreme-pressure lubricant.
Long-chain alcohol ether polycarboxylic acids of the invention and its preparation method and application has the following advantages and beneficial effects:
1, long-chain alcohol ether polycarboxylic acids of the present invention can be used as extreme-pressure lubricant application, have outstanding aqueous lubricating and antifriction
Performance has four excellent ball detection performances, and PB value is more than 130 Kgfs.
2, long-chain alcohol ether polyocarboxy acid type extreme-pressure lubricant safety and environmental protection of the invention, not sulfur-bearing, phosphorus, chlorine, boron, lead, zinc etc.
Toxic element, it is environmentally protective, it is pollution-free, and have no irritating odor, construction site is more easily accepted by.
3, long-chain alcohol ether polyocarboxy acid type extreme-pressure lubricant of the invention and oil emulsion, emulsion cutting oil have splendid compatibility
Property and intermiscibility；The oil emulsion deployed using long-chain alcohol ether polycarboxylic acids of the invention is shown extremely low foam tendency, not glued
Bits, easy cleaning can not only meet cleaning performance, but also be suitable for the requirement of low bubble processing occasion.
4, long-chain alcohol ether polycarboxylic acids preparation method of the invention is simple, is suitable for industrialized production.
Specific embodiment
Long-chain alcohol ether polycarboxylic acids of the invention and its preparation method and application is made below by way of specific embodiment further
Detailed description.
The reaction equation of long-chain alcohol ether polycarboxylic acids of the invention is as follows:
Wherein, x=0-10, y=1-10, z=0-10, p=10-40, n=5-25, m=5-25；
Embodiment 1
The long-chain alcohol ether polycarboxylic acids of the present embodiment is prepared by following methods:
1,740 530 grams of (the trans- block polyether of EO/PO (EO:PO=2:3)) (0.2mol) are warming up in 65 DEG C, 1 hour
19.6 grams of maleic anhydride (0.2mol) are added portionwise, adds rear insulation reaction 2 hours；85 DEG C are warming up to, peroxidating is added
1.2 grams of benzoyl, 0.6 gram of mercaptopropionic acid, drip off within 3 hours 28.8 grams of acrylic acid (0.4mol), insulation reaction 3 hours；Vacuum is removed
Taste 1.5 hours；It is added 0.6 gram of hydroquinone, cooling discharge is to get the long-chain alcohol ether polycarboxylic acids.
Embodiment 2
The long-chain alcohol ether polycarboxylic acids of the present embodiment is prepared by following methods:
1,740 530 grams of (the trans- block polyether of EO/PO (EO:PO=2:3)) (0.2mol) are warming up in 75 DEG C, 1 hour
In batches plus 19.6 grams of maleic anhydride (0.2mol), rear insulation reaction is added 1 hour；95 DEG C are warming up to, benzoyl peroxide is added
.2 grams of formyl chloride-1,0.6 gram of mercaptopropionic acid；Drip off within 3 hours 28.8 grams of acrylic acid (0.4mol), insulation reaction 2 hours；Vacuum taste removal 1
Hour；It is added 0.6 gram of hydroquinone, cooling discharge is to get the long-chain alcohol ether polycarboxylic acids.
Embodiment 3
The long-chain alcohol ether polycarboxylic acids of the present embodiment is prepared by following methods:
1,740 530 grams of (the trans- block polyether of EO/PO (EO:PO=2:3)) (0.2mol) are warming up in 65 DEG C, 1 hour
In batches plus 19.6 grams of maleic anhydride (0.2mol), rear insulation reaction is added 3 hours；85 DEG C are warming up to, benzoyl peroxide is added
.2 grams of formyl chloride-1,0.6 gram of mercaptopropionic acid；Drip off within 2.5 hours 28.8 grams of acrylic acid (0.4mol), insulation reaction 3 hours；Vacuum is removed
Taste 1 hour；It is added 0.6 gram of hydroquinone, cooling discharge is to get the long-chain alcohol ether polycarboxylic acids.
Embodiment 4
The long-chain alcohol ether polycarboxylic acids of the present embodiment is prepared by following methods:
1,740 530 grams of (the trans- block polyether of EO/PO (EO:PO=2:3)) (0.2mol) are warming up in 75 DEG C, 1 hour
In batches plus 19.6 grams of maleic anhydride (0.2mol), rear insulation reaction is added 1 hour；95 DEG C are warming up to, benzoyl peroxide is added
.2 grams of formyl chloride-1,0.6 gram of mercaptopropionic acid；Drip off within 4 hours 28.8 grams of acrylic acid (0.4mol), insulation reaction 2 hours；Vacuum taste removal 2
Hour；It is added 0.6 gram of hydroquinone, cooling discharge is to get the long-chain alcohol ether polycarboxylic acids.
Embodiment 5
The long-chain alcohol ether polycarboxylic acids of the present embodiment is prepared by following methods:
1,740 530 grams of (the trans- block polyether of EO/PO (EO:PO=2:3)) (0.2mol) are warming up in 65 DEG C, 1 hour
In batches plus 19.6 grams of maleic anhydride (0.2mol), rear insulation reaction is added 1 hour；85 DEG C are warming up to, benzoyl peroxide is added
.2 grams of formyl chloride-1,0.6 gram of mercaptopropionic acid；Drip off within three hours 36 grams of acrylic acid (0.5mol), insulation reaction 2 hours；Vacuum taste removal 1
Hour；It is added 0.6 gram of hydroquinone, cooling discharge is to get the long-chain alcohol ether polycarboxylic acids.
Embodiment 6
The long-chain alcohol ether polycarboxylic acids of the present embodiment is prepared by following methods:
1,740 530 grams of (the trans- block polyether of EO/PO (EO:PO=2:3)) (0.2mol) are warming up in 70 DEG C, 1 hour
In batches plus 19.6 grams of maleic anhydride (0.2mol), rear insulation reaction is added 1 hour；90 DEG C are warming up to, benzoyl peroxide is added
.2 grams of formyl chloride-1,0.6 gram of mercaptopropionic acid；Drip off within 4 hours 43.2 grams of acrylic acid (0.6mol), insulation reaction 2 hours；Vacuum taste removal 1
Hour；It is added 0.6 gram of hydroquinone, cooling discharge is to get the long-chain alcohol ether polycarboxylic acids.
Comparative example 1
Substantially with embodiment 1, difference is the preparation method of the long-chain alcohol ether polycarboxylic acids of this comparative example, and polyethers used is
PEG-2000 (polyoxyethylene ether).
Comparative example 2
Substantially with embodiment 1, difference is the preparation method of the long-chain alcohol ether polycarboxylic acids of this comparative example, and polyethers used is L-
63 (propylene glycol block polyethers).
Comparative example 3
The preparation method of the long-chain alcohol ether polycarboxylic acids of this comparative example is substantially with embodiment 1, and difference is, EO/PO is trans- embedding
The molar ratio of section polyethers, maleic anhydride and acrylic acid is 1:1.5:5.
Comparative example 4
The preparation method of the long-chain alcohol ether polycarboxylic acids of this comparative example is substantially with embodiment 1, and difference is, EO/PO is trans- embedding
The molar ratio of section polyethers, maleic anhydride and acrylic acid is 1:2:4.
The performance test results for the long-chain alcohol ether polycarboxylic acids that embodiment 1-6, comparative example 1-4 are prepared are as shown in table 1:
The performance test results of 1 long-chain alcohol ether polycarboxylic acids of table
Note: the kinematic viscosity that the viscosity in table is 40 DEG C.
From upper table result it can be seen that esterification temperature is little in 65-75 DEG C of product index variation, polymerization temperature is in 85-95
Less, time for adding is little in product index variation in 2-4 hour, and preferred process conditions are basicly stable for the variation of DEG C product index.
For the performance of product by the type of raw material alcohol ether and being affected for raw material proportioning, the long-chain alcohol ether that embodiment 1-6 is prepared is poly-
The various good physical properties of carboxylic acid, and the long-chain alcohol ether polycarboxylic acids of comparative example 1 is completely water-soluble and greasy property is poor, and is solid
Body, it is inconvenient to use；The cloud point of the long-chain alcohol ether polycarboxylic acids of comparative example 2 is too low, is not suitable for the operating temperature under normal condition；It is right
Ratio 3,4 viscosity are big, and foam difficulty disappears, and the viscous bits of cutter.
7 tapping torque test experiments of embodiment
Test method is as follows: embodiment 1-6, the long-chain alcohol ether polycarboxylic acids of comparative example 1-2 and JV-938 are pressed matched respectively
Then the square deployed fully synthetic cutting fluid sample of ratio prepares 10% working solution.7075 aluminium are done with prepared working solution
Tapping torque data.Test condition is revolving speed 1500rpm, torsion 300Ncm, tapping depth 8mm.Formula rate is as shown in table 2:
Table 2 cuts formula of liquid
Note: TEA: triethanolamine can be obtained by DOW Chemical；
ANTA-CAR 210MT: tricarboxylic acid amine type antirust agent, rice surprise have product by oneself；
FUNTAG CU250: water-soluble benzotriazole derivative, rice surprise have product by oneself；
Busan 77: polyquaternary amine salt sedimentation agent can be obtained by Bark Mann；
1740: trans- block polyether can be obtained by BASF.
Test result is shown in Table 3:
3 tapping torque test experiments result of table
Workpiece used in this test is the representative model for commonly using aluminium, long-chain alcohol ether polycarboxylic acids of the invention in live processing
It can be used as the workpiece that extreme-pressure lubricant is suitable for other models.
The processing method of this test mainly drills and tapping, similarly, in scene, the poly- carboxylic of long-chain alcohol ether of the invention
Acid also can be used as extreme-pressure lubricant suitable for processing methods such as grinding, deep-draw, cuttings.It is mainly obtained due to tapping torque test
It is the peak torque (maximal force consumed) and average torque (force value consumed) for adding man-hour requirement, so processing
Peak torque and average torque it is smaller, the lubrication extreme pressure property for representing the additive is better.
As can be seen from the above results, long-chain alcohol ether polycarboxylic acids of the invention has good extreme boundary lubrication.
8 four ball test experiments of embodiment
Test method is as follows: first by embodiment 1-6, the long-chain alcohol ether polycarboxylic acids of comparative example 1-2 and JV-938 and basis
Oil prepares 10% working solution after being sufficiently mixed in proportion.Four ball maximum nonseizure load PB (GB/T are with prepared working solution
3142-82) with long-time frictional experiment (SH/T 0189-92).
The condition of GB/T 3142-82 is as follows: the time 10 seconds；1450 revs/min of revolving speed；27 ± 8 DEG C of temperature, locking 68 ±
7N·m。
The condition of SH/T 0189-92 is as follows: the time 60 minutes；1200 revs/min of revolving speed；27 ± 8 DEG C of temperature；Load:
20kg；Lock 68 ± 7Nm.
Formula rate is as shown in table 4:
Table 4 cuts formula of liquid
Note: TEA: triethanolamine can be obtained by DOW Chemical.
ANTA-CAR 210MT: tricarboxylic acid amine type antirust agent, rice surprise have product by oneself.
FUNTAG CU250: water-soluble benzotriazole derivative, rice surprise have product by oneself.
Busan 77: polyquaternary amine salt sedimentation agent can be obtained by Bark Mann.
1740: trans- block polyether can be obtained by BASF.
Test result is shown in Table 5:
5 four ball test experiments result of table
In the experiment test of four balls, under certain temperature, revolving speed, maximum nonseizure load PB value, expression is that steel ball exists
Seizing peak load does not occur for lubricating status, and PB value is higher, illustrates that the greasy property of lubricant is better.Wear scar diameter D value, table
What is shown is the size that load-bearing steel ball face leads to wear scar diameter because of friction, and D value is smaller, illustrates abrasion-resistance, the profit of lubricant
Slip can be better.
Long-chain alcohol ether polycarboxylic acids of the invention has good extreme boundary lubrication as can be seen from the above results.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (7)
1. long-chain alcohol ether polycarboxylic acids is preparing the application in extreme-pressure lubricant,
The long-chain alcohol ether polycarboxylic acids is prepared from the following materials: EO/PO block polyether, acrylic acid, draws maleic anhydride
Send out agent, chain-transferring agent and polymerization inhibitor；
The molar ratio of the EO/PO block polyether, maleic anhydride and acrylic acid is 1:0.5~1.5:1.5~4；
In the EO/PO block polyether, the molar ratio of EO:PO is 0.2~2:1；
The preparation method of the long-chain alcohol ether polycarboxylic acids, comprising the following steps:
Esterification: maleic anhydride and EO/PO block polyether react to obtain long-chain carboxylate, and reaction temperature is 40-120 DEG C,
Reaction time is 0.5-6 hours；
Polymerization reaction: long-chain carboxylate is warming up to 60-150 DEG C, initiator and chain-transferring agent is added, then acrylic acid is added dropwise, is protected
Temperature reaction 0.5-10 hours；
It terminates reaction: temperature when polymerization reaction being maintained to vacuumize taste removal 1-2 hours, polymerization inhibitor is added, obtains the long-chain alcohol
Ether polycarboxylic acids.
2. application according to claim 1, which is characterized in that the EO/PO block polyether, maleic anhydride and propylene
The molar ratio of acid is 1:0.8~1.2:2~3.
3. application according to claim 1 or 2, which is characterized in that in the EO/PO block polyether, the molar ratio of EO:PO
For 0.5~1.5:1.
4. application according to claim 1 or 2, which is characterized in that the initiator is benzoyl peroxide, and dosage is original
Expect the 0.05-0.8% of total weight.
5. application according to claim 1 or 2, which is characterized in that the chain-transferring agent be thioacetic acid or mercaptopropionic acid,
Dosage is the 0.05-0.8% of raw material gross weight.
6. application according to claim 1 or 2, which is characterized in that the polymerization inhibitor is hydroquinone or para hydroxybenzene first
Ether, dosage are the 0.05-0.8% of raw material gross weight.
7. application according to claim 1 or 2, which is characterized in that the long-chain alcohol ether polycarboxylic acids is viscous in 40 DEG C of movement
Degree is 500-1500 centistoke.
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