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Tylovis SE 7

Tylovis SE 7

Tylovis SE 7 is a starch ether developed especially for dry mixed mortars such as adhesives, plasters and trowel compounds. Tylovis SE 7 is typically used with Tylose® MC grades in these building products.

 

SYNONYMS:
Tylovis® SE 7; Tylovis SE 7; starch ether; Tylovis® SE 7; Tylovis SE 7; Tylovis® SE-7; Tylovis SE-7; Tylovis® SE/7; Tylovis SE/7; Tylovis; Se 7;  Thylovis® SE 7; Thylovis SE 7; Thylovis® SE-7; Thylovis SE-7; Thylovis® SE/7; Thylovis SE/7; Thylovis; Se 7;  Tylovis® SE 7-; Tylovis SE 7-; Tylovis® SE-7-; Tylovis SE-7-; Tylovis® SE/7-; Tylovis SE/7-; Tylovis; Se 7;  tylovis® se 7; tylovis se 7; tylovis® se-7; tylovis se-7; tylovis® se/7; tylovis se/7; tylovis; se 7;  thylovis® se 7; thylovis se 7; thylovis® se-7; thylovis se-7; thylovis® se/7; thylovis se/7; thylovis; se 7;  tylovis® se 7-; tylovis se 7-; tylovis® se-7-; tylovis se-7-; tylovis® se/7-; tylovis se/7-; tylovis; se 7;  TYLOVİS® SE 7; TYLOVİS SE 7; TYLOVİS® SE-7; TYLOVİS SE-7; TYLOVİS® SE/7; TYLOVİS SE/7; TYLOVİS; SE 7;  THYLOVİS® SE 7; THYLOVİS SE 7; THYLOVİS® SE-7; THYLOVİS SE-7; THYLOVİS® SE/7; THYLOVİS SE/7; THYLOVİS; SE 7;  TYLOVİS® SE 7-; TYLOVİS SE 7-; TYLOVİS® SE-7-; TYLOVİS SE-7-; TYLOVİS® SE/7-; TYLOVİS SE/7-; TYLOVİS; SE 7; Tylovis® SE 7; Tylovis SE 7; starch ether; Tylovis® SE 7; Tylovis SE 7 


Tylovis SE 7

Tylovis SE 7 is a starch ether developed especially for dry mixed mortars such as adhesives, plasters and trowel compounds. Tylovis SE 7 is typically used with Tylose® MC grades in these building products. It is also compatible with all common dry mixed mortar additives eg. air-entraining, dispersing and hydrophobic agents. Tylovis SE 7 offers higher thickening, better slip and sag resistance as well as easy handling. In adhesives and trowel compounds, which contain higher doses of methylcellulose, tackiness and skin formation can be reduced by the addition of Tylovis SE 7.

In modern dry mix mortars a wide variety of additives are used to balance the rheological properties. Mortar formulations often include more than ten different ingredients and the development of such formulations requires great effort. To minimize this experimental effort, a targeted selection of components is necessary, knowledge of the mode of action and possible interactions is crucial. Behind cellulose ethers, Tylovis SE 7 is of major importance as additives, although their addition rate is very low (generally 0.01-0.05%). Almost all of Tylovis SE 7 available in mortars are hydroxypropyl starches (HPS).

 

INTERACTIONS WITH OTHER COMPONENTS

 

In Europe, there are three major producers of starch ether, ie (in alphabetical order): Agrana, Avebe and the Emsland Group. In product datasheets they usually do not include any details about the products that would clarify how they differ from each other, often not even the type of ether is disclosed (eg HP, CM- HP), and even less information on possible interactions with the other ingredients of the preparations. Each individual user is on their own and the product information reads as universally applicable and suitable for use in neutral and alkaline mortars. However, practice has shown that this is only half the truth.

 

In the authors' experience, the individual effects of the different Tylovis SE 7 are dependent on: a) the composition of the cement, b) the composition of the aqueous phase, in particular the calcium concentration, and c) the structure of the cement. 'starch ether, in particular the distribution of substituents in the glucose unit and throughout the polymer chain.

 

Due to the setting delay effect, Tylovis SE 7 are often combined with accelerators. The most common cement accelerators are calcium salts, for example calcium formate, calcium chloride or calcium nitrite.

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