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Cement grinding aid

A technology of composition and grinding agent, which is applied in the field of cement grinding aids, and can solve the problems of not disclosing cement grinding aids, etc.

Active Publication Date: 2012-09-05
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
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Embodiment

[0048] Abbreviations used in Table 1

[0049] Polymer A used

[0050]

[0051] * Mw = average molecular weight

[0052] The polymers A listed in Table 2 were prepared in a known manner by polymer mimicking reactions of specific poly(meth)acrylic acids with the corresponding alcohols and / or amines. Polymers A-1 to A-12 are partially neutralized with NaOH (M=H + 、Na + )existing.

[0053] Polymer A was used as a cement grinding aid in aqueous solution. The content of the polymer was 30% by weight (A-4), 35% by weight (A-2) or 40% by weight (A-1, A-3, A-5 to A-12). These aqueous solutions are referred to as A-1L, A-2L, A-3L, A-4L, A-5L, A-6L, A-7L, A-8L, A-9L, A-10L, A-11L and A -12L. The concentrations of A listed in the following tables are based on the content of polymer A.

[0054]

[0055] Table 3 Additional cement grinding aids

[0056] additional cement grinding aids

[0057] TEA

Triethanolamine

TIPA

Triisopropanolamine

DE...

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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

[0001] This application is a divisional application of the Chinese invention patent application named "cement grinding aid" with application number 200580025997.5 and application date of June 21, 2005. technical field [0002] The invention relates to the field of cement grinding aids. Background technique [0003] 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B103/52B02C23/06C04B40/00
CPCC04B24/2647C04B24/2658C04B24/2694C04B40/0039C04B2103/52Y02P40/10C04B24/121C04B24/2641C04B24/122C04B24/26C04B40/00
Inventor U·马德D·霍纳特B·马拉扎尼
Owner SIKA TECH AG
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