Process for the production of inorganic fibres based on...

Details Process for the production of inorganic fibres based on... Process for the production of inorganic fibres based on...

C - Chemistry, Metallurgy

01

F

23/104

C01F 11/46 (2006.01) C04B 14/38 (2006.01) C08K 7/08 (2006.01)

Patent

CA 1121973

ABSTRACT Inorganic fibres based on calcium sulphate with a ratio of length to diameter of more than 50:1 and a length of at least 0.2 mm., are obtained by converting calcium sulphate isothermally into calcium sulphate dihydrate, hemihydrate or anhydrite fibres in an aqueous solution of a proton donor, in a salt solution or in a mixture thereof at a temperature of from 40 to 120°C. in the presence of a solid phase; the length and high length to diameter ratio of the fibres make them especially useful as a reinforcement to strength synthetic resins, for improving the tear strength of paper and cardboard and for reinforcing inorganic binding agents.

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