Bisphenol A polyether and preparation method thereof

A polyether and bisphenol technology, applied in the field of bisphenol A polyether and its preparation, can solve the problems of short validity period, complicated preparation process and high chromaticity, and achieve the effects of good subsequent application, simple process and low chromaticity

Inactive Publication Date: 2017-09-29
于天荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the viscosity of the bisphenol A polyether product in the related art is too high, which is not suitable for mixing with other materials during subsequent use, and the preparation process is complicated, and there are many side reactions, resulting in a large hydroxyl value of the obtained bisphenol A polyether product and a low color. The degree is high, which will affect the effect of subsequent use
In addition, bisphenol A polyether products in related technologies are prone to aging and denaturation, have a short validity period, and cannot maintain performance stably for a long time

Method used

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  • Bisphenol A polyether and preparation method thereof

Examples

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preparation example Construction

[0044] The preparation method of bisphenol A polyether of the present invention is simple in technology, adopts bisphenol A and alkylene oxide to react, after ripening, degassing, adds antioxidant to obtain bisphenol A polyether product, the method of the present invention can obtain hydroxyl Uniform bisphenol A polyether product with low value, low viscosity and low color.

[0045] In a preferred embodiment of the present invention, the mass ratio of bisphenol A to alkylene oxide is 30-50:40-60, preferably 35-45:45-55, more preferably 42:50.

[0046] The use of a specific amount of alkylene oxide helps to improve the reaction efficiency with bisphenol A, reduce by-products, and obtain bisphenol A polyether products with low hydroxyl value, low viscosity and low chroma.

[0047] In a preferred embodiment of the present invention, the vacuum degree of the vacuum reaches above -0.098MPa, preferably above -0.099MPa.

[0048] In a preferred embodiment of the present invention, th...

Embodiment 1

[0082] A preparation method of bisphenol A polyether, comprising:

[0083] 1. The dosage of each raw material is shown in Table 1:

[0084] Table 1 Example 1 of the present invention Bisphenol A polyether preparation method each raw material consumption

[0085]

[0086]

[0087] 2. Process flow:

[0088] 1. Check:

[0089] The kettle is clean, the reaction kettle, external circulation pump and all valves and pipelines of the system have no leakage, the vacuum pump is running normally, and the vacuum degree is above -0.098MPa, such as -0.099MPa, the lower the better. There is no pure material produced in the previous batch in the reactor and pipeline.

[0090] 2. Feeding:

[0091] Throw in BPA.

[0092] 3. Add KOH:

[0093] Add KOH according to the amount of feed, which can be pumped or poured directly. After adding KOH, install the blind plate and replace it with negative pressure twice. If the seal of the reactor is good, feed the material under negative pressure...

Embodiment 2

[0104] A preparation method of bisphenol A polyether, comprising:

[0105] 1. The dosage of each raw material is shown in Table 2:

[0106] Table 2 The amount of each raw material used in the preparation method of bisphenol A polyether in Example 2 of the present invention

[0107]

[0108] 2. Process flow:

[0109] 1. Check:

[0110] The kettle is clean, the reaction kettle, external circulation pump and all valves and pipelines of the system have no leakage, the vacuum pump is running normally, and the vacuum degree is above -0.098MPa, such as -0.099MPa, the lower the better. There is no pure material produced in the previous batch in the reactor and pipeline.

[0111] 2. Feeding:

[0112] Throw in BPA.

[0113] 3. Add KOH:

[0114] Add KOH according to the amount of feed, which can be pumped or poured directly. After adding KOH, install the blind plate and replace it with negative pressure twice. If the seal of the reactor is good, feed the material under negative ...

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Abstract

The invention provides bisphenol A polyether and a preparation method thereof. The preparation method of the bisphenol A polyether is simple in process; and a bisphenol A polyether product is obtained through reaction of bisphenol A and epoxyalkane, curing, degassing and antioxidant addition. By adopting a specific process, the uniform bisphenol A polyether product with low hydroxyl value, low viscosity and low chromaticity can be obtained. The bisphenol A polyether product is low in hydroxyl value, low in viscosity and low in chromaticity, can be kept uniform and stable for a long period of time, subsequent application can be better carried out, and mixing with other materials is facilitated.

Description

technical field [0001] The invention relates to the technical field of functional polymers, in particular to a bisphenol A polyether and a preparation method thereof. Background technique [0002] Bisphenol A polyether polyols have important applications in the field of synthetic resins, not only as monomers for synthetic resins, but also as modifiers for polymer chains. Because the molecule contains an aromatic ring, it can make the synthesized resin structure more stable and have better performance, and can be made into anti-shock materials, photosensitive materials, adhesive materials, etc. The main applications of bisphenol A polyether polyols are as follows: [0003] 1. Condensation with dibasic acid to synthesize various resins: [0004] The properties of resins formed by esterification of dibasic alcohols and dibasic acids directly depend on the molecular structure of alcohols and acids, and the molecular structure of dibasic alcohols is particularly important. Eth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C08L71/02
CPCC08G65/2612C08G65/2696C08L71/02
Inventor 于天荣张海菊
Owner 于天荣
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