Inflaming retarding polyether polyol, combined polyether, polyurethane foam and preparation method of polyether polyol

A technology of polyether polyol and combining polyether, applied in the field of flame retardant polyether polyol, can solve the problems of high smoke density and poor flame retardant performance, and achieve low smoke density, simple operation, obvious economic and social benefits Effect

Inactive Publication Date: 2014-08-27
SHANGHAI DONGDA POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of poor flame retardancy or high smoke d...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1. Polyether polyol:

[0058] The preparation method of polyether polyol, it may further comprise the steps:

[0059] ①Under a nitrogen atmosphere, raise the temperature of diethanolamine to 60°C, use a constant pressure dropping funnel to drop the formaldehyde solution into the diethanolamine within 15-20 minutes, stir for 20 minutes, feed liquid A; use a constant pressure dropping funnel to Add 166g of triethyl phosphite dropwise to the material liquid A within 1-21 hours, react at 70-8075°C for 1.5 hours, and carry out vacuum distillation at 100°C to obtain the initiator; among them, diethanolamine, formaldehyde and The molar ratio of triethyl phosphate is 1:1:1;

[0060] ② Dissolve 30 parts of initiator, 10 parts of sucrose, and 20 parts of cyanuric acid in 10 parts of water, add 0.0015 parts of KOH to obtain material liquid B;

[0061] ③Introduce 5 parts of propylene oxide into the material liquid B at 85°C, keep the system pressure below 0.4MPa during the introd...

Embodiment 2

[0069] 1. Polyether polyol:

[0070] The preparation method of polyether polyol, it may further comprise the steps:

[0071] ①Under a nitrogen atmosphere, raise the temperature of diethanolamine to 70°C, use a constant pressure dropping funnel to drop the formaldehyde solution into the diethanolamine within 15-20 minutes, stir for 20 minutes, feed liquid A; use a constant pressure dropping funnel to Add 166g of triethyl phosphite dropwise to feed liquid A within 1.5 hours, react at 70°C for 2 hours, and carry out vacuum distillation at 100°C to obtain the initiator; among them, diethanolamine, formaldehyde and triethyl phosphite The molar ratio is 0.9:1:1;

[0072] ② Add 0.0015 parts of dimethylamine to 30 parts of starter and 20 parts of sorbitol to obtain feed solution B;

[0073] ③Introduce 5 parts of propylene oxide into the feed liquid B at 85°C, keep the system pressure below 0.4MPa during the feed process, and react at 85-90°C for 1 hour to obtain the feed liquid C; ...

Embodiment 3

[0081] 1. Polyether polyol:

[0082] The preparation method of polyether polyol, it may further comprise the steps:

[0083] ①Under a nitrogen atmosphere, raise the temperature of diethanolamine to 60°C to 70°C, use a constant pressure dropping funnel to drop the formaldehyde solution into the diethanolamine within 15-20 minutes, stir for 20-20 minutes, feed liquid A; use constant pressure drop Add 166g of triethyl phosphite dropwise to the material liquid A within 1-2 hours through the funnel, react at 70-8080°C for 1.5 hours, and carry out vacuum distillation at 100°C to obtain the initiator; among them, diethanolamine, formaldehyde The molar ratio with triethyl phosphite is 1:1:11:0.9:0.9;

[0084] ② Dissolve 30 parts of initiator, 15 parts of glycerin, and 10 parts of cyanuric acid in 10 parts of water, and add 0.0015 parts of trimethylamine to obtain material liquid B;

[0085] ③Through 3 parts of ethylene oxide into the material liquid B at 85-90°C, keep the system pre...

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Abstract

The invention discloses inflaming retarding polyether polyol, combined polyether, polyurethane foam and a preparation method of the polyether polyol. The preparation method of the polyether polyol includes the steps that first, under the inert atmosphere, diethanol amine, formalin and triethyl phosphite are mixed and reacted, reduced pressure distillation is conducted, and an initiator is obtained; second, the initiator, the polyol, cyanuric acid and a basic catalyst are mixed to obtain feed liquid B; or, the initiator, the polyol, the cyanuric acid and the basic catalyst are mixed to obtain the feed liquid B; or, the initiator, the polyol, the cyanuric acid, the basic catalyst and water are mixed to obtain the feed liquid B; third, the feed liquid B is mixed with epoxide, after the feed liquid B and the epoxide are reacted, feed liquid C is obtained, or dehydration is performed after reacting, and accordingly the feed liquid C is obtained; fourth, the feed liquid C is mixed with epoxide, and the polyether polyol can be obtained after the reaction. The polyether polyol is halogen-free nitrogen and phosphorus collaboration inflaming retarding polyether polyol, the obtained polyurethane foam has good flame retardation, and the preparation method is easy to operate, high in yield and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a flame-retardant polyether polyol, combined polyether, polyurethane foam and a preparation method thereof. Background technique [0002] The main application field of polyether polyols is polyurethane polymer materials, and its consumption accounts for about 80% of the total polyols, which are used in the production of polyurethane foams, elastomers, adhesives and coatings. Polyether polyol is referred to as polyether, also known as polyalkylene ether or polyoxyalkylene, which is prepared by ring-opening polymerization of epoxy compounds in the presence of active hydrogen-containing compounds as initiators and catalysts. Commonly used epoxy compounds are propylene oxide (PO), ethylene oxide (EO) and so on. Polyoxypropylene polyols (including ethylene oxide-terminated reactive polyethers) are the most widely used raw material intermediates in the polyurethane industry. This type of polyether is mainly used in the production o...

Claims

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Application Information

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IPC IPC(8): C08G65/28C07F9/6521C08G18/50C08G18/32C08J9/14C08L75/08C08G101/00
Inventor 张立柱李心强刘延良王立亭于楠
Owner SHANGHAI DONGDA POLYURETHANE
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