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Thinners for aqueous suspensions of mineral particles and hydraulic binder pastes

A sum and compound technology, applied in the field of new plasticizers, can solve problems such as short time

Inactive Publication Date: 2014-11-19
CHRYSO SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These plasticizers impart a constant viscosity to the suspension over a period of time which remains short despite the addition of one or more electrolytes

Method used

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  • Thinners for aqueous suspensions of mineral particles and hydraulic binder pastes
  • Thinners for aqueous suspensions of mineral particles and hydraulic binder pastes
  • Thinners for aqueous suspensions of mineral particles and hydraulic binder pastes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0166] Embodiment 1: the preparation of glycidyl ether

Embodiment 1a

[0167] Example 1a): Preparation of 1-ethoxy-1-ethyl glycidyl ether (EEGE)

[0168] 1-Ethoxy-1-ethyl glycidyl ether was obtained by protecting glycidol with ethyl vinyl ether (EVE): 30 ml of glycidol (0.45 mol), followed by the addition of 167 ml of ethyl vinyl ether (1.6 mol). Under stirring and keeping the temperature below 40°C, 0.9 g of p-toluenesulfonic acid was gradually added. The solution was then washed with saturated NaHCO 3 The solution was washed, and the organic phase was washed with Na 2 SO 4 Dry and concentrate.

[0169] The collected monomer (EEGE) was distilled under reduced pressure (T b =86°C, 28mm) purification. When ethyl vinyl ether is used, this protection in an acid medium results in a pendant acetal linkage capable of regenerating the hydroxyl function.

[0170]

Embodiment 1b

[0171] Embodiment 1b): the preparation of glycidyl methyl ether (GME)

[0172] By distillation (T b .=110-114° C.) to purify commercially available glycidyl methyl ether (GME) ( Purity 85%), followed by CaH at +5°C 2 Store for 48 hours and filter before use.

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Abstract

The invention relates to a compound of following formula (I): the preparation method thereof and the use of same.

Description

technical field [0001] The present invention relates to novel plasticizers for aqueous suspensions of mineral particles and hydraulic binder pastes. Background technique [0002] It is known to add dispersants or plasticizers to aqueous suspensions of mineral particles in order to reduce their viscosity or to reduce their water content in order to achieve values ​​required for certain applications such as coatings. The suspension thus diluted can be used in the preparation of various industrial products including paints, products for coating paper and formulations for rubber and synthetic resins. [0003] It is also known to add plasticizers to hydraulic adhesives, such as cement, mortar, calcium sulphate or lime, in order to reduce the water content of the hydraulic adhesive paste. For this reason, the hydraulic adhesive has a denser structure after setting, which is to be understood in particular as a higher mechanical strength. [0004] In the case of specific paper coa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/335C04B24/24C04B24/32
CPCC04B24/32C08G65/3353C04B2103/34C04B24/246C08G65/22C08G65/33303C04B24/243
Inventor P·迈特拉斯B·佩莱伦F·莱辛
Owner CHRYSO SA
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