Synthetic method of polyether polyatomic alcohol

A technology of polyether polyol and synthesis method, applied in the field of chemical product manufacturing, can solve the problems of poor compatibility, poor stability, delamination and the like, and achieve the effects of low viscosity, low cost and good storage stability

Inactive Publication Date: 2009-01-28
绍兴广佳庄鑫建材制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility between this polyether polyol and cyclopentane blowing agent is po...

Method used

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  • Synthetic method of polyether polyatomic alcohol

Examples

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Embodiment 1

[0017] Example 1: Diethylene glycol 690kg, palm oil 855kg, white granulated sugar 2275kg, potassium hydroxide 35kg, PO5640kg; ring-opening polymerization temperature 105-115°C, polymerization time 5-10 hours; aging temperature 110-115°C, aging time 4 Hours; degassing for 15 minutes after aging, add 20kg of glacial acetic acid, dehydrate until qualified, dehydration temperature 105 ~ 125 ℃.

Embodiment 2

[0018] Example 2: Propylene glycol 720kg, white granulated sugar 1895kg, dimethylamine 140kg, PO 1400kg, ring-opening polymerization and curing first, polymerization temperature 85-95°C, time 2-4 hours; curing temperature 85-100°C, curing time 1 hour; After aging, add 1800kg of soybean oil, dehydrate for half an hour, and the dehydration temperature is 105°C-110°C; after dehydration, continue to add PO2480kg for polymerization reaction and aging, the polymerization temperature is 105-115°C, the time is 5-10 hours, and the aging temperature is 110-115 ℃, aging time 3 hours; degassing 15 minutes, continue dehydration to pass, dehydration temperature 105 ~ 125 ℃.

Embodiment 3

[0019] Example 3: Diethylene glycol 1044kg, cottonseed oil 1340kg, white sugar 1827kg, dimethylamine 44kg, ethylenediamine 35kg, PO4437kg; ring-opening polymerization temperature 105-115°C, polymerization time 5-10 hours; aging temperature 110-115 ℃, the aging time is 4 hours; degassing for 15 minutes, continue dehydration to pass, dehydration temperature 105 ~ 125 ℃.

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Abstract

The invention discloses a synthetic method of a polyether glycol which belongs to the manufacture technical field of chemical products. The synthetic method of the invention comprises the following steps: sucrose, a compound partly containing active hydrogen, and propylene oxide are taken as raw materials and the polyether glycol is prepared under the effect of a catalyst by the processes of ring opening polymerization, curing, neutralized degasification and dehydrating, etc.; and the synthetic method of the invention is characterized in that: the raw materials also comprise seed oil, and the inventory rating of each component is as follows according to weight percent: 20-25 percent of the sucrose, 2-15 percent of the compound partly containing the active hydrogen, 45-60 percent of the propylene oxide and 5-25 percent of the seed oil, and the total sum of the weight percent of each component is 100 percent; the seed oil can be any one or a mixture of more than one of castor oil, palm oil, soybean oil, cotton seed oil, peanut oil, coconut oil, linseed oil, rapeseed oil, corn, olive oil and sunflower oil, etc. The synthetic method of the invention reasonably chooses the seed oil as raw materials, thus being capable of effectively reducing the usage of the propylene oxide, improving the service performance of the products and reducing the production cost.

Description

technical field [0001] The invention relates to a synthesis method of polyether polyol, which belongs to the technical field of chemical product manufacture. Background technique [0002] Polyether polyol is the main raw material for the manufacture of rigid polyurethane foam. Its products have the characteristics of low thermal conductivity and high specific strength. They are widely used in the insulation of buildings, equipment, and pipelines. Ideal insulation material for electric water heaters and solar water heaters. [0003] The existing sucrose-type rigid foam polyether polyol synthesis method mainly uses sucrose, some active hydrogen-containing compounds, and propylene oxide (PO) as raw materials, and undergoes ring-opening polymerization, neutralization and decolorization, and post-filtration treatment under the action of a catalyst. Process made. Although the functionality is high, the combined polyether formulated with CFC-11 blowing agent has been widely used ...

Claims

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Application Information

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IPC IPC(8): C08G65/28C08G18/48C08G101/00
Inventor 山柏芳唐江史娟
Owner 绍兴广佳庄鑫建材制造有限公司
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