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US 2010/0160523 A1Published application
Halogen-free flame retardant additive
OwnerUgo Zucchelliinventor
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Abstract
The invention relates to a halogen-free flame retardant additive, essentially comprising hypophosphorous acid metallic salts coated inorganic hydrates and/or organic salts, useful as a flame retardant for polymer compositions, alone or in combination with other flame retardants and optionally further conventional components.
Claims21
A hypophosphorous acid metallic salt characterized in that it is surface coated with at least one compound selected from:
- alkali-metal or alkali-earth hydrates;
- (a) hydrotalcite or hydrotalcite-like compounds;
- and
- (b) alkali-metal or alkali-earth organic acid salts.
1 more element
Dependencies are inferred from the claim text.