Fluid resistant silicone compositions for sealing magnesium alloy components

The present invention relates generally to compositions for sealing and adhering magnesium-based substrates. More particularly, the present invention relates to compositions which demonstrate excellent resistance to fluid solvents, particularly automotive fluids, while maintaining excellent adherenc...

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Bibliographic Details
Main Author DeCato, Alfred A
Format Patent
LanguageEnglish
Published 11.11.2003
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Summary:The present invention relates generally to compositions for sealing and adhering magnesium-based substrates. More particularly, the present invention relates to compositions which demonstrate excellent resistance to fluid solvents, particularly automotive fluids, while maintaining excellent adherence to magnesium-based substrates. Silicone compositions are disclosed which exhibit excellent adherence to magnesium-based substrates such as magnesium alloys and which exhibit excellent resistance to organic solvents. These compositions include at least one polymerizable silicone component, at least one amino-containing silane adhesion promoter which enhances adhesion of the composition to magnesium-based substrates, and at least one viscosity modifier, which enhances the resistance of the compositions to organic solvents. Methods of making these compositions, articles of manufacture including these compositions, and a method for providing enhanced adhesion to magnesium-based substrates using these compositions are also disclosed.