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Isocyanurate polyether polyol, preparation method thereof, and preparation method of coating curing agent

A technology of isocyanurate and polyether polyol, applied in coating and other directions, can solve the problems of difficult control of product quality, loss of catalytic activity, complex production process, etc., and achieve easy control, good safety and environmental protection, and production technology. simple effect

Inactive Publication Date: 2016-12-21
SHANDONG INOV NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of the trimer curing agent is under the action of the trimerization catalyst, the trimolecular isocyanate is polymerized to form an isocyanurate ring structure, and then the polymerization inhibitor is added to cause the trimerization catalyst to be poisoned and lose its catalytic activity. The production process is complicated. , product quality is not easy to control
[0004] At present, there are no relevant reports on polyether polyols containing isocyanurate rings and coating curing agents prepared from isocyanurate polyether polyols at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 790g of trishydroxyethyl isocyanurate in 2L autoclave at room temperature, add 790g of distilled water, stir to dissolve, then 300g of acetone solution, after stirring evenly, drop into 0.05g of 85wt.% concentration of phosphoric acid, heat up to 100°C, stir evenly and circulate and filter, then vacuumize to remove moisture and acetone, dry to 0.04wt.% moisture; add 0.15g of solid powder DMC catalyst under nitrogen protection environment, gradually raise the temperature to 130±2°C, and vacuum to -0.095MPa, nitrogen bubbling for 1h; add 80g of propylene oxide to initiate the reaction, when the pressure of the reactor drops to 0.01MPa, start to drop the remaining 634g of propylene oxide for continuous polymerization, after the reaction, vacuumize to remove the monomer for 1h , take a sample to detect OHv=335.9 mgKOH / g, cool down to 90° C., discharge and store, and obtain isocyanurate polyether polyol A.

[0028] Add 550g of toluene diisocyanate (TDI) and 284g of ethyl...

Embodiment 2

[0030] Add 395g of trishydroxyethyl isocyanurate in a 2L autoclave at room temperature, add 300g of distilled water, stir and dissolve, then 300g of acetone solution, stir evenly and drop into 0.03g of phosphoric acid at a concentration of 85wt.%, and heat up to 100°C, stir evenly and circulate and filter, then vacuumize to remove moisture and acetone, dry to 0.05wt.% moisture; add 0.05g of solid powder DMC catalyst under nitrogen protection environment, gradually raise the temperature to 130±2°C, and vacuum to -0.095MPa, nitrogen bubbling for 1h; add 40g of propylene oxide to initiate the reaction, when the pressure of the reactor drops to 0.01MPa, start to drop the remaining 1067g of propylene oxide for continuous polymerization, after the reaction, vacuumize to remove the monomer for 1h , take a sample to detect OHv=168.5mgKOH / g, cool down to 90°C and store the material to obtain the isocyanurate polyether polyol B.

[0031] Add 750g of 4,4-diphenylmethane diisocyanate (pur...

Embodiment 3

[0033]Add 786g trishydroxyethyl isocyanurate in a 2L autoclave at room temperature, add 700g of distilled water, stir and dissolve, then 750g of acetone solution, stir evenly, drop into 0.1g of phosphoric acid at a concentration of 85wt.%, and heat up to 100°C, stir evenly and circulate and filter, then vacuumize to remove moisture and acetone, dry to 0.03wt.% moisture; add 0.23g of emulsion-like DMC catalyst under nitrogen protection environment, gradually raise the temperature to 130±2°C, and vacuum to -0.095MPa, nitrogen bubbling for 1h; add 150g of propylene oxide to initiate the reaction, when the pressure of the reactor drops to 0.01MPa, start to drop the remaining 204g of propylene oxide for continuous polymerization, after the reaction, vacuumize to remove the monomer for 1h , take a sample to detect OHv=445.1 mgKOH / g, cool down to 90° C. and discharge for storage to obtain isocyanurate polyether polyol C.

[0034] Add 505g of hexamethylene diisocyanate (HDI) and 800g ...

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Abstract

The invention relates to an isocyanurate polyether polyol, a preparation method thereof, and a preparation method of a coating curing agent, and belongs to the technical field of synthesis of polyether polyol and polyurethane. The isocyanurate polyether polyol is obtained through ring-opening polymerization of an alkylene oxide compound through coordination polymerization with tris(2-hydroxy ethyl)isocyanurate as an initiator under the action of a double metal cyanide complexation catalyst. The polyether modified trimer coating curing agent with the ring structure of isocyanurate is prepared through a prepolymer reaction of the isocyanurate polyether polyol and isocyanate according to a molar ratio of 1:3 in an organic solvent. The polyether polyol and the coating have the advantages of simple preparation methods, high yield, low cost, good safety and environmental protection.

Description

technical field [0001] The invention relates to an isocyanurate polyether polyol, a preparation method thereof and a coating curing agent, and belongs to the technical field of polyether polyol and polyurethane synthesis. Background technique [0002] At present, the commonly used polyurethane coating curing agents on the market include polyurethane prepolymer curing agents and trimer curing agents. Most polyurethane prepolymer curing agents are prepared from prepolymer solutions formed by the reaction of trimethylolpropane (TMP) and toluene diisocyanate (TDI) in a solvent. The production of the trimer curing agent is under the action of the trimerization catalyst, the trimolecular isocyanate is polymerized to form an isocyanurate ring structure, and then the polymerization inhibitor is added to cause the trimerization catalyst to be poisoned and lose its catalytic activity. The production process is complicated. , Product quality is not easy to control. Moreover, the trim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08G18/48C08G18/76C08G18/73C09D7/12
CPCC08G18/48C08G18/73C08G18/76C08G65/2618C08G18/7614C08G18/7671C09D7/63
Inventor 孙兆任李剑锋周玉波王玉杨凯
Owner SHANDONG INOV NEW MATERIALS CO LTD
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