CN107602811A - Association thickener manufacturing process - Google Patents
Association thickener manufacturing process Download PDFInfo
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- CN107602811A CN107602811A CN201711061398.XA CN201711061398A CN107602811A CN 107602811 A CN107602811 A CN 107602811A CN 201711061398 A CN201711061398 A CN 201711061398A CN 107602811 A CN107602811 A CN 107602811A
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- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to a kind of association thickener manufacturing process, its reactant includes polyethylene glycol, diisocyanate, solvent, nertralizer, catalyst, antioxidant, double hydroxycarboxylic acid hydrophilic chain extenders, polar aprotic strong solvent, long-chain alkyl alcohol and monoethanolamine；Mainly using the double hydroxycarboxylic acids of hydrophily as chain extender, and carry out chain extension before hydrophobic grouping reacts, form the molecule that end group is isocyano, then reacted with long-chain alkyl alcohol, it is hydrophobic to form last both ends, the long chain of hydrophilic in the middle, the center section of the strand is hydrophilic parts, including polyethylene glycol and double hydroxycarboxylates, strand both ends are the long-chain alkyl alcohol hydrophobic grouping connected by isocyanates root, mixture viscosity is low in preparation process, with good hydrophilic property, thickening effect is good, properties of product are stable, the advantages that preparation technology is simple.
Description
Technical field
The invention belongs to polymeric material field, more particularly to a kind of thickener.
Background technology
Aqueous polyurethane association thickener is typically made up of hydrophobic group, hydrophilic chain and crosslinking agent.Hydrophobic group is typically oil
Base, octadecyl, dodecane phenyl, nonyl phenolic group etc., it plays association, is the principal element for determining thickening effect.It is hydrophilic
Chain is typically the materials such as Aethoxy Sklerol, can provide chemical stability and viscosity stability.Crosslinking agent refers to diisocyanate or more
Isocyanates, usually used is hexamethylene diisocyanate HDI, IPDI IPDI, the hexamethylenes of 4,4'- bis-
Dicyclohexylmethane diisocyanate H12MDI etc..Its thickening mechanism is by molecule hydrophobic side and latex particle, surfactant, pigment
Associated Deng hydrophobic structure, form space network, when its concentration is higher than critical micelle concentration, form micella；And hydrophilic chain
Worked with water molecules hydrogen bond, so as to reach thickening result.Such as the patent CN201210426530.3 " line styles containing hydrophobic side base
In the preparation method of aqueous polyurethane thickener ", description can it is a kind of by 40%-60% polyethylene glycol, 10%-30% diisocyanate and
10%-30% end-capping reagents react under catalyst action forms half closed-end structure, then increases molecular weight using small molecule chain extender,
Form final aqueous polyurethane thickener.Its shortcoming in course of reaction viscosity it is larger, the performed polymer needs eventually formed
It is dried, 20 is pressed after drying：80 add water to stir the thickener to form 20% solid content, and product stability is poor, have impact on thickening
Performance.
The content of the invention
The purpose of the present invention is the shortcomings that presence for prior art, there is provided a kind of properties of product are stable, thickening effect is good,
Course of reaction viscosity is low, the simple association thickener manufacturing process of preparation technology.
Reactant of the present invention includes polyethylene glycol, diisocyanate, solvent, nertralizer, catalyst, antioxidant, double hydroxyls
Yl carboxylic acid hydrophilic chain extender, polar aprotic strong solvent, long-chain alkyl alcohol and monoethanolamine；Mainly use following manufacture work
Skill：
1）Feed intake molecular weight 600 953.5 parts of polyethylene glycol enter 2000L stock kettle, be warming up to 1150C, it is small to vacuumize dehydration 0.5
When, reflux condensation mode valve is opened, is passed through nitrogen protection；
2）It is cooled to 800C, under moderate-speed mixer, feed intake 0.2 part of antioxidant, and after stirring, feed intake 200 parts of N- first in order
Base pyrrolidones, 252.3 parts of hexamethylene diisocyanates, 1 part of catalyst, insulation reaction 1.0-1.5 hours are to setting isocyanide
Acid group value；
3）Feed intake 67 parts of dihydroxypropionic acids, and insulation reaction extremely sets isocyanic acid root in 2 hours；
4）Feed intake 200 parts of DMAs, 135.2 parts of long-chain alkyl alcohols, insulation reaction 1.5-2.0 hours to isocyanic acid
Root reaches setting content；
5）Hot water valve is closed, cooling water valve is opened, material is cooled to 500During below C, the 100 parts of ethyl acetates that feed intake be solvent,
45 parts of triethylamines are nertralizer, 3 parts of monoethanolamines, and are sufficiently stirred 30 minutes；
6）Mix slowly down, the 453.5 parts of water that feed intake are diluted, and are stirred；
7）Detect it is qualified after, filter and package.
Compared with the prior art, the invention has the advantages that：The present invention is using the double hydroxycarboxylic acids of hydrophily as chain extension
Agent, and chain extension is carried out before hydrophobic grouping reacts, the molecule that end group is isocyano is formed, it is then anti-with long-chain alkyl alcohol
Should, forming that last both ends are hydrophobic, long chain of hydrophilic in the middle, the center section of the strand is hydrophilic parts, including
Polyethylene glycol and double hydroxycarboxylates, strand both ends are the long-chain alkyl alcohol hydrophobic grouping connected by isocyanates root, are passed through
Polyethylene glycol middle element chain after double hydroxycarboxylates strengthen has very strong hydrophily, in polar aprotic strong solvent
Under effect, there is association effect well with water and hydrophilic radical, mixture viscosity is low in preparation process, its hydrophily
Good, thickening effect is good, and properties of product are stable, and preparation technology is simple.
Embodiment
Reactant in association thickener process for making of the present invention include polyethylene glycol, diisocyanate, solvent,
Nertralizer, catalyst, antioxidant, double hydroxycarboxylic acid hydrophilic chain extenders, polar aprotic strong solvent, long-chain alkyl alcohol and one
Monoethanolamine；Using following manufacturing process：
1）Feed intake molecular weight 600 953.5 parts of polyethylene glycol enter 2000L stock kettle, be warming up to 1150C, it is small to vacuumize dehydration 0.5
When, reflux condensation mode valve is opened, is passed through nitrogen protection；
2）It is cooled to 800C, under moderate-speed mixer, feed intake 0.2 part of antioxidant, and after stirring, feed intake 200 parts of N- first in order
Base pyrrolidones, 252.3 parts of hexamethylene diisocyanates, 1 part of catalyst, insulation reaction 1.0-1.5 hours are to setting isocyanide
Acid group value；
3）Feed intake 67 parts of dihydroxypropionic acids, and insulation reaction extremely sets isocyanic acid root in 2 hours；
4）Feed intake 200 parts of DMAs, 135.2 parts of long-chain alkyl alcohols, insulation reaction 1.5-2.0 hours to isocyanic acid
Root reaches setting content；
5）Hot water valve is closed, cooling water valve is opened, material is cooled to 500During below C, the 100 parts of ethyl acetates that feed intake be solvent,
45 parts of triethylamines are nertralizer, 3 parts of monoethanolamines, and are sufficiently stirred 30 minutes；
6）Mix slowly down, the 453.5 parts of water that feed intake are diluted, and are stirred；
7）Detect it is qualified after, filter and package.
" part " of the present invention is a unit mass, typically uses 1Kg as a unit mass；Various material compositions
Ratio be relative preferred values, various times settings are relative preferred times；The injected volume of each material can be according to reactor capacity
Or batch size increases and decreases in proportion.
Claims (1)
- A kind of 1. association thickener manufacturing process, it is characterized in that using following processing step：1）Feed intake molecular weight 600 953.5 parts of polyethylene glycol enter 2000L stock kettle, be warming up to 1150C, it is small to vacuumize dehydration 0.5 When, reflux condensation mode valve is opened, is passed through nitrogen protection；2）It is cooled to 800C, under moderate-speed mixer, feed intake 0.2 part of antioxidant, and after stirring, feed intake 200 parts of N- methyl in order Pyrrolidones, 252.3 parts of hexamethylene diisocyanates, 1 part of catalyst, insulation reaction 1.0-1.5 hours are to setting isocyanic acid Root；3）Feed intake 67 parts of dihydroxypropionic acids, and insulation reaction extremely sets isocyanic acid root in 2 hours；4）Feed intake 200 parts of DMAs, 135.2 parts of long-chain alkyl alcohols, insulation reaction 1.5-2.0 hours to isocyanic acid Root reaches setting content；5）Hot water valve is closed, cooling water valve is opened, material is cooled to 500During below C, the 100 parts of ethyl acetates that feed intake be solvent, 45 parts of triethylamines are nertralizer, 3 parts of monoethanolamines, and are sufficiently stirred 30 minutes；6）Mix slowly down, the 453.5 parts of water that feed intake are diluted, and are stirred；7）Detect it is qualified after, filter and package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711061398.XA CN107602811A (en) | 2017-11-02 | 2017-11-02 | Association thickener manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711061398.XA CN107602811A (en) | 2017-11-02 | 2017-11-02 | Association thickener manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107602811A true CN107602811A (en) | 2018-01-19 |
Family
ID=61085194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711061398.XA Withdrawn CN107602811A (en) | 2017-11-02 | 2017-11-02 | Association thickener manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107602811A (en) |
-
2017
- 2017-11-02 CN CN201711061398.XA patent/CN107602811A/en not_active Withdrawn
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180119 |