Shanghai Luer Chemical Trading Co., Ltd.

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STRUKSILON 8118

Application Fields

STRUKSILON 8118 is a silicone surfactant for liquid-CO2 of medium potency for the production of flexible polyurethane slabstock foam based on polyether polyols.

STRUKSILON 8118 was especially developed for the production of liquid-CO2 blown PU slabstock foam. Additionally, STRUKSION 8118 can be used in conventional PU slabstock foam blown with water or physical blowing agents and works in nearly all known flexible PU slabstock foam applications.

Chemical and Physical Properties

STRUKSILON 8118 is a hydrolytically stable polyether-modified polydimethyl siloxane.
STRUKSILON 8118 is chemically inert due to the exclusive usage of encapped polyethers and possesses a high stability.

General chemical structure:

STRUKSILON 8118 is a clear, colourless to slightly yellow liquid of middle viscosity and is miscible with water at room temperature.

Typical Properties:

Viscosity at 25°C	[mPas]	950
Turbidity point	[°C]	34
Density at 25°C	[kg/m³]	1016
Flash point (DIN EN 22719)	[°C]	> 100

Technical Properties

STRUKSILON 8118 is very well suited for the continuous production of liquid-CO2 blown flexible slabstock foam. STRUKSILON 8118's very good nucleation properties enhance the formation of an uniform and stable froth. An uniform flexible foam with fine cells, good physical and mechanical properties and a high degree of open cells is obtained.

STRUKSILON 8118 enables the production of high quality flexible foam over a wide mix head pressure range.

STRUKSILON 8118 is a silicone stabiliser of medium potency. It induces a balanced relation between good stabilisation properties and high quantities of open cells resulting in good air flow as well as a uniform cell and density distribution combined with good physical and mechanical properties in flexible block foams.

STRUKSILON 8118 shows excellent emulsifying efficiency and polyetherpolyol compatibility.

STRUKSILON 8118 can be used in combination with all usual co-blowing agents like methylenechloride or acetone. Application in new low pressure technologies can be recommended. Furthermore, STRUKSILON 8118 possesses a wide processing latitude and is recommended for the production of conventional flexible PU slabstock foam with a density range of approximately 16-35kg/m³.

Recommended Dosage

In liquid-CO2 blown foam STRUKSILON 8118 is normally used in amounts of 0.8 to 1.8 php. We recommend to adjust the optimum dosage according to the corresponding formula, type and amount of activators, catalysts, activity of raw materials and desired process and product parameters.

Product Safety and Handling

STRUKSILON 8118 is not a hazardous material for the purposes of hazardous materials regulations. Further information regarding safety, toxicology, special properties of the product, transport and storage are given in the material safety data sheet.

Packaging, Storage and Transport

Storage stability	12 months in closed original containers if transported and stored at a temperature between 1 and 30 °C.
Packaging	200 kg drums 1000 kg containers(IBC)

The data given are typical values which are not intended for use in preparing specifications. For test methods refer to the corresponding supplement. The suggestions for application an usage for our products as well as possible proposed formulations are meant to advise only to the best of our knowledge. This information is without obligation and does not release customers from their own testings to ensure suitability for intended processes and use. Liability is only accepted in case of intention or gross negligence. Liability for any defects caused by minor negligence are not accepted. Each producer is responsible and liable to observe legislation and patent rights of third parties.