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Cement grinding aid

A grinding aid and cement technology, applied in the field of cement grinding aids, can solve the problems of no disclosure of cement grinding aids and the like

Inactive Publication Date: 2007-10-31
SIKA TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these documents do not disclose cement grinding aids

Method used

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  • Cement grinding aid
  • Cement grinding aid
  • Cement grinding aid

Examples

Experimental program
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Embodiment

[0047] Abbreviations used in Table 1

[0048] abbreviation

the meaning

mw *

PEG500

Polyethylene glycol without terminal OH groups

500 g / mol

PEG1000

Polyethylene glycol without terminal OH groups

1000 g / mol

PEG1100

Polyethylene glycol without terminal OH groups

1100 g / mol

PEG2000

Polyethylene glycol without terminal OH groups

2000 g / mol

PEG3000

Polyethylene glycol without terminal OH groups

3000 g / mol

PPG600

Polypropylene glycol without terminal OH groups

600 g / mol

PPG800

Polypropylene glycol without terminal OH groups

800 g / mol

EO-PO(50 / 50)2000

Without terminal OH group, made of epoxy

Ethane to Propylene Oxide in a 50:50 ratio

block copolymer

2000 g / mol

[0049] * Mw = average molecular weight

[0050] The polymers A listed in Table 2 were prepared in a known manner by polymer mimicking reactions of specific poly(me...

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Abstract

The invention relates to an aqueous polymer composition which is used in the form of a cement grinding aid and makes it possible to effectively reduce the grinding time and to obtain cements exhibiting excellent characteristics. A cement grinding aid containing a combination of polymer A and known cement grinding aids is also disclosed.

Description

technical field [0001] The invention relates to the field of cement grinding aids. Background technique [0002] The manufacture of cement is a very complex process. It is well known that cement is very sensitive to water, whether in liquid or gaseous state, because cement is water-curing, ie cement hardens under the action of water to a very stable solid within a short period of time. An important step in cement manufacture is grinding the clinker. Since the slag is very hard, it takes a lot of effort to crush it. Due to the nature of cement, it is important that it be present as a very fine powder. Therefore, the fineness of cement is an important quality characteristic. To facilitate comminution into powder form, so-called cement grinding aids are used. This greatly reduces grinding time and energy consumption. The cement grinding aids are generally selected from the class containing glycols such as alkylene glycols, amines or aminoalcohols. [0003] For example, U...

Claims

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Application Information

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IPC IPC(8): C04B24/26B02C23/06C04B40/00
CPCC04B24/2658C04B24/2694C04B2103/52C04B24/2647C04B40/0039Y02P40/10C04B24/121C04B24/2641C04B24/122C04B24/26C04B40/00
Inventor U·马德D·霍纳特B·马拉扎尼
Owner SIKA TECH AG
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