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Copolymer based on oxidative olefinic diols alkenyl ether and unsaturated dicarboxylic acid derivatives

A technology of oxyalkylene glycol alkenyl ether and dicarboxylic acid derivatives, which is applied in the field of additives to improve the performance of building materials produced therefrom during processing and solidification, and can solve the problems of reduced strength and stability of hardened building materials.

Inactive Publication Date: 2007-02-28
ARCHITECTURAL TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these products, like the aforementioned products, are surface-active compounds that introduce an undesirably large number of pores into the concrete mixture, resulting in reduced strength and stability of the hardened building material

Method used

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  • Copolymer based on oxidative olefinic diols alkenyl ether and unsaturated dicarboxylic acid derivatives
  • Copolymer based on oxidative olefinic diols alkenyl ether and unsaturated dicarboxylic acid derivatives
  • Copolymer based on oxidative olefinic diols alkenyl ether and unsaturated dicarboxylic acid derivatives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] 270 g of water were placed in a reaction vessel equipped with a thermometer, a stirrer, a reflux condenser and two connecting pipes respectively connected to the inlets. While stirring, 32.7 g (0.334 mol) of maleic anhydride and 25.0 g of a 50% aqueous sodium hydroxide solution were added thereto, and the temperature thereof was kept below 30° C. by cooling. Subsequently, while stirring, 100 mg of ferric sulfate heptahydrate and 18.5 g of 30% hydrogen peroxide from the respective supply container were added thereto, on the one hand, a solution of 5.1 g of sodium hydroxymethanesulfinate dihydrate and 12.5 g of water (Raw material 1) was added thereto during 75 minutes, on the other hand, 155 g (0.310 mol) of methyl polyethylene glycol monovinyl ether (molecular weight 500) and 12.1 g (0.006 mol) of polypropylene glycol dimalemic acid ( A solution of molecular weight 2000) (raw material 2) was added during 60 minutes.

[0097] After the addition was complete, stirring wa...

Embodiment 2

[0099] The procedure was as described in Example 1, but using the following vinyl ether feedstock composition (feedstock 2):

[0100] 155.0g (0.310mol) methyl polyethylene glycol monovinyl ether (molecular weight 500)

[0101] 7.4g (0.001mol) polydimethylsiloxane-bis-(dipropylene aminomaleamic acid) (molecular weight 5400)

[0102] At the end of the addition, the reaction mixture had a pH of 5.02 and was subsequently neutralized with 20% aqueous sodium hydroxide (58.3 g). The solids content in the final product was 35.5% by weight.

Embodiment 3

[0104] Example 1 was repeated using feedstock 2 with the following composition:

[0105] 116.0g (0.232mol) methyl polyethylene glycol monovinyl ether (molecular weight 500)

[0106] 9.1g (0.0875mol) styrene

[0107] 5.2g (0.0026mol) polypropylene glycol dimalemic acid (molecular weight 2000)

[0108] The water-dispersed reaction product after neutralization with a 20% aqueous sodium hydroxide solution had no residual monomer styrene and had a solid content of 33.7% by weight.

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Abstract

The invention discloses a copolymer based on oxygenize fin two alfin ether group and unsaturated dicarboxilic acid derivant and ethenyl polyalkylene glycol, polysiloxane or fat compound. Those copolymer can be used to be hydraulic cementing agent especially addition agent of cement. That copolymer own excellent and permanence liquefaction and do not introduce a good deal of air cavity into cementing agent mixture to prevent building materials intensity and stability from reducing.

Description

technical field [0001] The present invention relates to copolymers based on oxyalkylene glycol alkenyl ethers and unsaturated dicarboxylic acid derivatives, their production, and the use of such copolymers as additives for hydraulic binders, especially cement, to enhance the constructions produced thereby Use of material properties during processing and solidification. Background technique [0002] It is known that additives in the form of dispersants are usually added to the aqueous solution of powdered inorganic and organic substances such as clay, enamel, silicate meal, chalk, carbon black, rock flour, pigments, mica, synthetic material powders and hydraulic binders. In the slurry, to improve its processability, that is, plasticity, coatability, extrudability, pumpability or flowability. These additives, usually containing ionic groups, are able to break up the agglomeration of solid materials in order to disperse the particles formed and in this way increase the process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F212/08C08F210/00B01F3/00B01F23/00
Inventor 格哈德·阿尔布雷希特约瑟夫·魏希曼约翰·彭克纳阿尔弗雷德·克恩
Owner ARCHITECTURAL TECH RES