Foams having high flame retardancy and low density
AssigneeBASF SE
InventorsKlaus Hahn, Armin Alteheld, Benjamin Nehls, Bernhard Schmied
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Abstract
A process for the production of a foam by curing a beaten or blown foam comprising an aqueous composition, the aqueous: composition comprising A) from 40 to 95 parts by weight of an alkali metal silicate solution having a water content of from 40 to 90% by weight, B) from 0 to 60 parts by weight of a pulverulent alkali metal silicate having a water content of from 0 to 30% by weight, C) from 0 to 15 parts by weight of a surfactant, D) from 5 to 40 parts by weight of an aqueous polymer dispersion having a solids content of from 10 to 60% by weight, and the foams obtainable by the process and the use thereof as an insulation panel.
Claims23
1-10. (canceled)
A process for the production of a foam by curing a beaten or blown foam comprising, an aqueous composition, comprising
- A) from 40 to 95 parts by weight of an alkali metal silicate solution having a water content of from 40 to 90% by weight,
- B) from 0 to 60 parts by weight of a pulverulent alkali metal silicate having a water content of from 0 to 30% by weight,
- C) from 0 to 15 parts by weight of a surfactant,
- D) from 5 to 40 parts by weight of an aqueous polymer dispersion having a solids content of from 10 to 60% by weight,
- wherein foam particles comprising thermoplastic polymers are added to the beaten or blown foam before the curing and the curing and/or foaming is effected by exposure to microwave radiation.
Dependencies are inferred from the claim text.