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Modified polyether

A polyether and modification technology, applied in the field of modified polyether, can solve the problems affecting production and construction quality, and achieve the effects of small adverse effects, good compatibility and outstanding defoaming ability.

Inactive Publication Date: 2014-07-02
NANTONG HANTAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the production and use of the product, the system will produce many foams due to the shear force, which seriously affects the production and construction quality

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0016] A modified polyether, the molecular chain of the modified polyether is added by acetylene glycol polyethoxy polypropoxy ether and low molecular weight hydrogen-containing siloxane, and its structural formula is as follows:

[0017]

[0018] M1 and M2 are low molecular siloxane groups, molecular weight M=50, m=1, n=1. A kind of antifoaming agent, is made up of each component of following parts by weight: modified polyether 30 parts, hydrophobically modified meteorological silica 1 part, emulsifier S-80 1 part, emulsifier T-80 1 part, 5 parts of light paraffin.

Embodiment 2

[0020] A modified polyether, the molecular chain of the modified polyether is added by acetylene glycol polyethoxy polypropoxy ether and low molecular weight hydrogen-containing siloxane, and its structural formula is as follows:

[0021]

[0022] M1 and M2 are low molecular siloxane groups, molecular weight M=100, m=5, n=3. A kind of defoamer, is made up of each component of following parts by weight: modified polyether 80 parts, hydrophobically modified meteorological silica 10 parts, emulsifier S-80 5 parts, emulsifier T-80 5 parts, 20 parts of light paraffin.

Embodiment 3

[0024] A modified polyether, the molecular chain of the modified polyether is added by acetylene glycol polyethoxy polypropoxy ether and low molecular weight hydrogen-containing siloxane, and its structural formula is as follows:

[0025]

[0026] M1 and M2 are low molecular siloxane groups, molecular weight M=120, m=10, n=5. A kind of defoamer, is made up of each component of following parts by weight: modified polyether 50 parts, hydrophobically modified meteorological silica 5 parts, emulsifier S-80 3 parts, emulsifier T-80 3 parts, 15 parts of light paraffin.

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Abstract

The invention relates to a modified polyether, and the modified polyether molecular chain is obtained by addition of acetylenic diol poly ethoxylated poly propoxy ether and low molecular hydrogen-containing silicone, and has a structural formula shown in the specification. The modified polyether is used in the manufacture of an antifoaming agent, and enables antifoaming agent to effectively eliminate foam produced by an adverse high-viscosity aqueous system.

Description

technical field [0001] In particular, the invention relates to a modified polyether used for preparing a defoamer. Background technique [0002] High-viscosity water-based resins are widely used in coatings, inks, papermaking, leather and other industries. During the production and use of the product, the system will produce many foams due to the shear force, which seriously affects the production and construction quality. In order to eliminate air bubbles, it is usually necessary to add a defoamer. Introduce defoamers and their deficiencies. Contents of the invention [0003] Purpose of the invention: In order to solve the deficiencies of the prior art, the present invention provides a modified polyether that can make the defoamer effectively eliminate the foam produced by the bad high-viscosity aqueous system. [0004] Technical solution: In order to realize the above-mentioned purpose of the invention, the technical solution adopted in the present invention is: [0...

Claims

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Application Information

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IPC IPC(8): C08G65/336C07F7/18B01D19/04
Inventor 杨伦
Owner NANTONG HANTAI CHEM
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