LC 9922

Application Fields

• Secondary sealant for insulating glass units

Processing

• Preparation -The substrate areas that will be in contact with the    sealant must be clean, dry and free of all loose   material such as dust, dirt, rust, oil and other contaminants. Non-porous substrates should be cleaned with a solvent and clean, lint-free, cotton   cloth. remove residual solvent before it evaporates  with a fresh clean, dry cloth.
• Sealant mixing - The mixing ratio of the OH-part and Curing-Part should be as follows. Volume ratio: 10:1(OH-part : Curing-part), Weight ratio: 16:1 (OH-part : Curing-part). Please observe the mixing ratio. If the mixing ratio is not correct, it may cause product defects. Not enough mixing, incorrect rate of both agents, diluting with Alcohol solvent can make trouble in curing (Check : Butterfly test, Pot life, adhesion test) Protect from dust and pollutant to have qualified surface and avoid being damaged on the surface of sealant while curing Clean the nozzle and used tools with a solvent. Be careful not to expose the Curing-part to air.  Discharge only OH-Part to prevent the occurrence of cured substances in the mixer
• Tooling - Fully fill in cross point or side edge point of the joint without empty space without bubbles. Tooling must be done before curing of on the surface is finished. spread sealant with proper spatula.
• Curing - Protect from dust and pollutant to have qualified surface. And avoid being shocked and contact on the surface of sealant while curing

Certification

• KS F 4910 G-25 HM
• ISO 11600 G-25 HM

Adhesion

• WACKER® LC 9922 exhibits excellent primeless adhesion to most non-porous siliceous material, e.g., glass, tiles, ceramics, concrete. enamel, glazed tiles, and clinker Users must carry out their own tests due to the great variety of substances. The adhesion can be improved in many cases by pretreatment of the substrates with a primer. If adhesion difficulties arise please contact our technical service.

Restrictions on use

• It is the user's responsibility to test the compatibility of the sealant with the adjoining materials. Incompatible substances like coating materials (paints, varnishes, and glazes) or organic plasticizer containing rubbers (EPDM, butyl and neoprene) can lead to discoloration or other impairments like loss of adhesion of the sealant. Materials in direct contact with the applied sealant like cleaning agents and materials in indirect contact like gaseous emissions can damage the sealant in its function or change its appearance. Because of the multitude of these materials. Wacker cannot make a general statement to the compatibility of materials with the sealant. In case of doubt the user shall conduct appropriate preliminary tests.

• WACKER® LC 9922 must not be used for structural glazing system
• WACKER® LC 9922 should not be used in contact with metals such as lead, copper, brass or zinc due to corrosion.
• WACKER® LC 9922 may be discolored in contact with some materials e.g. EPDM, APTK and neoprene.
• WACKER® LC 9922 should not be used for sealing of aquaria.
• WACKER® LC 9922 is not recommended for use on natural stone, such as marble, granite, quartzite, as it can cause staining.
• WACKER® LC 9922 is not recommended for sealing of aquaria or for longer-term use under water.
• WACKER® LC 9922 is not suitable for food grade applications where the joints are likely to come in contact with food.
• WACKER® LC 9922 is not suitable for use as a mirror adhesive.
• The time until complete curing may be extended at lower temperature, lower humidity, increasing film thickness or by low volume of air exchange.
• The use of tooling agents should be avoided if possible. Otherwise, water or a diluted solution of a little neutral soap or alcohol in water should be sparingly applied.