Silicones

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Silicones CoatingsNew Technologies for
Preservationand Architectural Creativity
Enable Builders and Architects to more _
innovative, flexible design
Dr. Harald P. Mauder
Centre Europeen des Silicones
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Silicones for Construction

• Engineering Sealants
• and Adhesives
• Masonry Water Repellents
• Industrial Coatings
• and Maintenance
• Conservation and Restoration

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UN Plaza Apartments, NYC
40 years of successful performance
Sealed with a construction silicone sealant in
1965
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Silicones for Construction
1938
Innovative and Flexible design
Protection
Enhance Energy Efficiency
Durability
Todays products bring more Performance
and faster Processing.
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Empire Tower
KL International Airport
Thailand
Chicago
Biyoke II Tower
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Dubai
Hong Kong
Bahrain
Japan
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Silicone based Impregnating Emulsion

• suppresses the growth of
• micro organism

Lime sand stone
Exposure 3 months under tree
Untreated
Impregnated with WA

• suppresses the efflorescence

Clay bricks
Exposure 9 months in dry
condition
Untreated Impregnated with WA
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Silicone based Impregnating Emulsion

• Improve Freeze-Thaw Resistance

Freeze-Thaw Cycles Test Conducted by
Polymerinstitut, Floersheim, Germany
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• Water Absorption reduced by more than 80
  compared to control
• Good Water Vapor Permeability

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Silicone based Impregnating Emulsion
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Decorative Paint modified with Silicone based
Impregnating Emulsion

• a building in Leverkusen was refurbished in 1993
• paint based on guide formulation RKB1/3/1
• re-inspected Feb 2005
• no damages
• no significant stain

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Photo taken 1993 after refurbisment
Photos taken 12 years after refubishment Feb. 2005
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before renovation
1995 after renovation
coated with Silcone- Primer (Em. LD) and
Silicone modified Paint (Em. F)
natural stone (WA)
6 years later
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2001 detail views coating and stone are still
clean
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For the renovation the approval of the Magistrat
der Stadt Wien (authority of the City of Vienna)
was necessary
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Properties of an optimally formulated Masonry
Coating System

• Water-repellent
• Microporous
• Highly permeable to water vapour
• Highly permeable to CO2
• Resistant to aggressive airborne pollutants
• Not a breeding ground for fungi, algae and
  mosses
• Solvent-free or low solvent
• Water-thinnable, environmentally compatible
• Non-thermoplastic